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Mikrowellentechnologie

Mikrowellentechnologie

Neuartige Mikrowellenkomponenten und komplette Übertragungssysteme für verschiedene Fusionsexperimente

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Bild: Carsten Lechte

Forschungsschwerpunkte

In heutigen Fusionsexperimenten wird Elektron-Zyklotron-Resonanzheizung mit Mikrowellen im Bereich von 28 GHz bis 170 GHz bei Megawatt-Leistungen regulär zur Plasmaheizung und zur Unterdrückung von magnetohydrodynamischen Instabilitäten verwendet. Wir liefern Beiträge zur Entwicklung von Heizungs- und Diagnostikkomponenten, zu ihrer Anwendung und zur Auswertung experimenteller Ergebnisse.

Für die Übertragung von Hochleistungsmillimeterwellen werden überdimensionierte Hohlleiter und quasioptische Übertragungsleitungen verwendet. Das Institut entwickelt, simuliert und testet neuartige Mikrowellenkomponenten und komplette Übertragungssysteme für verschiedene Fusionsexperimente wie z.B. Wendelstein 7-X, ASDEX Upgrade und ITER. Die Hochleistungsmikrowellen werden von Gyrotrons erzeugt. Ferner werden Hochspannungsversorgungen entwickelt und gefertigt, die die strengen Anforderungen der Gyrotrons erfüllen.

Wir sind auch an den auf ECRH-basierenden Experimenten beteiligt. An Asdex Upgrade wird der ECRH-Heizprozess und der Einfluss des ECRH-Stromtriebes auf neoklassische Tearingmoden untersucht. Als Unterstützung für verschiedene Fusionsexperimente werden full-wave Simulationen zum Studium von Wellenausbreitung und Modenkonversion im Plasma durchgeführt.

Mikrowellen werden ebenso zur Heizung und Diagnose von Hochtemperatur-Fusionsplasmen verwendet und das Institut liefert Beiträge zur Doppler-Reflektometrie von Plasmaturbulenzen und und Flussuntersuchungen durch die Entwicklung von Komponenten und die Simulation experimenteller Daten.

Publikationen

2025
1. K. Höfler et al., “Milestone in predicting core plasma turbulence: successful multi-channel validation of the gyrokinetic code GENE,” Nature Communications, vol. 16, Art. no. 1, Mar. 2025, doi: 10.1038/s41467-025-56997-2.
  BibTeX
  @article{HOEFLER2025short, author = {H{\"o}fler, Klara and G{\"o}rler, Tobias and Happel, Tim and Lechte, Carsten and Molina, Pedro and Bergmann, Michael and Bielajew, Rachel and Conway, Garrard D. and David, Pierre and Denk, Severin S. and Fischer, Rainer and Hennequin, Pascale and Jenko, Frank and McDermott, Rachael M. and White, Anne E. and Stroth, Ulrich and the {ASDEX Upgrade Team}}, day = 15, doi = {10.1038/s41467-025-56997-2}, issn = {2041-1723}, journal = {Nature Communications}, month = {03}, number = 1, pages = 2558, title = {Milestone in predicting core plasma turbulence: successful multi-channel validation of the gyrokinetic code {GENE}}, url = {https://doi.org/10.1038/s41467-025-56997-2}, volume = 16, year = 2025 }
  Link
  https://doi.org/10.1038/s41467-025-56997-2
  DOI
  10.1038/s41467-025-56997-2
2023
1. A. Hentrich, B. Plaum, A. Killinger, and G. Tovar, “Further optimization of resonant GHz wave absorption coatings,” in 2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Sep. 2023, pp. 1–2. doi: 10.1109/IRMMW-THz57677.2023.10299294.
  - BibTeX
  - DOI
  BibTeX
  @inproceedings{10299294, abstract = {High power stray radiation is a problem that affects heating systems of fusion reactors. Due to the harsh environment in such a device an absorption mechanism was investigated in both experiment and modeling, which allows the use of thermically and chemically very stable ceramic coatings, while providing very good absorption.}, author = {Hentrich, A. and Plaum, B. and Killinger, A. and Tovar, G.}, booktitle = {2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)}, doi = {10.1109/IRMMW-THz57677.2023.10299294}, issn = {2162-2035}, month = {09}, pages = {1-2}, title = {Further optimization of resonant GHz wave absorption coatings}, year = 2023 }
  DOI
  10.1109/IRMMW-THz57677.2023.10299294
2. B. Plaum, “Monte Carlo evaluation of the effects of higher order modes in high-power millimeter-wave systems,” Proceedings of the 48th International Conference on Infrared Millimeter and Terahertz Waves (IRMMW-THz), Sep. 2023.
  - BibTeX
  BibTeX
  @article{plaum2023monte, author = {Plaum, Burkhard}, journal = {Proceedings of the 48th International Conference on Infrared Millimeter and Terahertz Waves (IRMMW-THz)}, month = {09}, title = {Monte Carlo evaluation of the effects of higher order modes in high-power millimeter-wave systems}, year = 2023 }
3. A. Hentrich, B. Plaum, and A.Killinger, “Advanced optimization of resonant GHz wave absorption coatings,” Proceedings of the 48th International Conference on Infrared Millimeter and Terahertz Waves (IRMMW-THz), Sep. 2023.
  - BibTeX
  BibTeX
  @article{HENTRICH2023IRMMWTHZ, address = {Montreal / Canada}, author = {Hentrich, A. and Plaum, B. and A.Killinger}, journal = {Proceedings of the 48th International Conference on Infrared Millimeter and Terahertz Waves (IRMMW-THz)}, month = {09}, title = {Advanced optimization of resonant {GHz} wave absorption coatings}, year = 2023 }
4. P. A. Molina Cabrera et al., “W-band tunable, multi-channel, frequency comb Doppler backscattering diagnostic in the ASDEX-Upgrade tokamak,” Review of Scientific Instruments, vol. 94, Art. no. 8, Aug. 2023, doi: 10.1063/5.0151271.
  BibTeX
  @article{CABRERA2023comb, author = {Molina Cabrera, P. A. and Kasparek, W. and Happel, T. and Eixenberger, H. and Kammerloher, L. and Hennequin, P. and H{\"o}fler, K. and Honor{\'e}, C. and {ASDEX Upgrade Team}}, doi = {10.1063/5.0151271}, eprint = {https://pubs.aip.org/aip/rsi/article-pdf/doi/10.1063/5.0151271/18084686/083504\_1\_5.0151271.pdf}, issn = {0034-6748}, journal = {Review of Scientific Instruments}, month = {08}, number = 8, pages = 083504, title = {{W-band tunable, multi-channel, frequency comb Doppler backscattering diagnostic in the ASDEX-Upgrade tokamak}}, url = {https://doi.org/10.1063/5.0151271}, volume = 94, year = 2023 }
  Link
  https://doi.org/10.1063/5.0151271
  DOI
  10.1063/5.0151271
5. B. Plaum, “Estimation of the Effects of Spurious Modes in Linear Microwave Systems Using a Monte Carlo Algorithm,” IEEE Journal of Microwaves, vol. 3, Art. no. 3, Jul. 2023, doi: 10.1109/JMW.2023.3283152.
  - BibTeX
  - DOI
  BibTeX
  @article{10159235, author = {Plaum, Burkhard}, doi = {10.1109/JMW.2023.3283152}, journal = {IEEE Journal of Microwaves}, month = {07}, number = 3, pages = {1061-1067}, title = {Estimation of the Effects of Spurious Modes in Linear Microwave Systems Using a Monte Carlo Algorithm}, volume = 3, year = 2023 }
  DOI
  10.1109/JMW.2023.3283152
6. A. Frank et al., “Impact of the turbulence wavenumber spectrum and probing beam geometry on Doppler reflectometry perpendicular velocity measurements,” Plasma Physics and Controlled Fusion, vol. 65, Art. no. 6, May 2023, doi: 10.1088/1361-6587/accd1a.
  BibTeX
  @article{FRANK2023, author = {Frank, A and H{\"o}fler, K and Happel, T and G{\"o}rler, T and Lechte, C and Stroth, U and the ASDEX Upgrade Team}, doi = {10.1088/1361-6587/accd1a}, journal = {Plasma Physics and Controlled Fusion}, month = {05}, number = 6, pages = 065010, publisher = {IOP Publishing}, title = {Impact of the turbulence wavenumber spectrum and probing beam geometry on Doppler reflectometry perpendicular velocity measurements}, url = {https://dx.doi.org/10.1088/1361-6587/accd1a}, volume = 65, year = 2023 }
  Link
  https://dx.doi.org/10.1088/1361-6587/accd1a
  DOI
  10.1088/1361-6587/accd1a
7. B. Plaum, M. Preynas, and M. Choe, “Calculations for the optical system for the first ITER plasma,” EPJ Web of Conferences, vol. 277, p. 1005, 2023, doi: 10.1051/epjconf/202327701005.
  BibTeX
  @article{Plaum_2023, author = {Plaum, Burkhard and Preynas, M{\'{e}}lanie and Choe, Munseok}, doi = {10.1051/epjconf/202327701005}, editor = {Poli, E. and Liu, Y. and Udintsev, V.}, journal = {{EPJ} Web of Conferences}, pages = 01005, publisher = {{EDP} Sciences}, title = {Calculations for the optical system for the first {ITER} plasma}, url = {https://doi.org/10.1051%2Fepjconf%2F202327701005}, volume = 277, year = 2023 }
  Link
  https://doi.org/10.1051%2Fepjconf%2F202327701005
  DOI
  10.1051/epjconf/202327701005
8. D. Wagner et al., “Single- and Two-Frequency Sub-THz Waveguide Notch Filters With Rejection Frequencies Within and Beyond the Passband,” IEEE Transactions on Microwave Theory and Techniques, vol. 71, Art. no. 6, 2023, doi: 10.1109/TMTT.2023.3234103.
  - BibTeX
  - DOI
  BibTeX
  @article{WAGNER2023, author = {Wagner, Dietmar and Kasparek, Walter and Leuterer, Fritz and Monaco, Francesco and Plaum, Burkhard and Ruess, Tobias and Sch{\"u}tz, Harald and Stober, J{\"o}rg and Thumm, Manfred}, doi = {10.1109/TMTT.2023.3234103}, journal = {{IEEE} Transactions on Microwave Theory and Techniques}, number = 6, pages = {2558-2566}, title = {Single- and Two-Frequency Sub-THz Waveguide Notch Filters With Rejection Frequencies Within and Beyond the Passband}, volume = 71, year = 2023 }
  DOI
  10.1109/TMTT.2023.3234103
9. C. Lechte, T. Happel, K. Höfler, T. Görler, A. Frank, and the ASDEX Upgrade Team, “Synthetic Fullwave Doppler Reflectometry Diagnostic for Fusion Experiments,” 2023.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2023EPS, author = {Lechte, C. and Happel, T. and H{\"o}fler, K. and G{\"o}rler, T. and Frank, A. and the {ASDEX Upgrade Team}}, note = {EPS 49th Conference on Plasma Physics}, title = {{Synthetic Fullwave Doppler Reflectometry Diagnostic for Fusion Experiments}}, year = 2023 }
10. A. Hentrich, “Simulation and reflectivity measurements of the ITER first plasma beam dump material,” in EPJ Web of Conferences, EDP Sciences, 2023, p. 2009.
  - BibTeX
  BibTeX
  @inproceedings{hentrich2023simulation, author = {Hentrich, Andreas}, booktitle = {{EPJ Web of Conferences}}, organization = {{EDP Sciences}}, pages = 02009, title = {Simulation and reflectivity measurements of the {ITER} first plasma beam dump material}, volume = 277, year = 2023 }
11. D. Moseev et al., “Commissioning and first results of the 174 GHz collective Thomson scattering diagnostic at Wendelstein 7-X,” Journal of Instrumentation, 2023.
  - BibTeX
  BibTeX
  @article{MOSEEV2023CTS, author = {Moseev, D. and Ponomarenko, S. and Laqua, H.P. and Stange, T. and Nielsen, S.K. and Braune, H. and Gantenbein, G. and Illy, S. and Jelonnek, J. and Kasparek, W. and Kuleshov, A. and Krier, L. and Lechte, C. and Marsen, S. and Nishiura, M. and Plaum, B. and Ragona, R. and Ruess, T. and Salewski, M. and Stordiau, P. and Thumm, M. and Wolf, R.C.}, journal = {Journal of Instrumentation}, note = {accepted}, title = {{Commissioning and first results of the 174 GHz collective Thomson scattering diagnostic at Wendelstein 7-X}}, year = 2023 }
2022
1. A. Hentrich, V. M. Garcia, A. Killinger, B. Plaum, C. Lechte, and G. E. M. Tovar, “Resonant Atmospheric Plasma-Sprayed Ceramic Layers Effectively absorb Microwaves at 170 GHz,” Journal of Infrared, Millimeter, and Terahertz Waves, vol. 43, Art. no. 5–6, Jun. 2022, doi: 10.1007/S10762-022-00861-7.
  BibTeX
  @article{Hentrich2022IRMMTHZ, author = {Hentrich, Andreas and Garcia, Venancio Martinez and Killinger, Andreas and Plaum, Burkhard and Lechte, Carsten and Tovar, G{\"{u}}nter E.M.}, doi = {10.1007/S10762-022-00861-7}, issn = {18666906}, journal = {Journal of Infrared, Millimeter, and Terahertz Waves}, month = {06}, number = {5-6}, pages = {349--365}, publisher = {Springer}, title = {{Resonant Atmospheric Plasma-Sprayed Ceramic Layers Effectively absorb Microwaves at 170 GHz}}, url = {https://link.springer.com/article/10.1007/s10762-022-00861-7}, volume = 43, year = 2022 }
  Link
  https://link.springer.com/article/10.1007/s10762-022-00861-7
  DOI
  10.1007/S10762-022-00861-7
2. C. Lechte, “Mikrowellen-Simulationen am IGVP -- Für Technologie und Fusionsforschung.” Zenodo, 2022. doi: 10.5281/zenodo.6774241.
  BibTeX
  @misc{LECHTE2022simupresentation, author = {Lechte, Carsten}, doi = {10.5281/zenodo.6774241}, publisher = {Zenodo}, title = {{Mikrowellen-Simulationen am IGVP -- Für Technologie und Fusionsforschung}}, url = {https://doi.org/10.5281/zenodo.6774242}, year = 2022 }
  Link
  https://doi.org/10.5281/zenodo.6774242
  DOI
  10.5281/zenodo.6774241
3. D. Wagner et al., “Single- and Two-Frequency Sub-THz Notch Filters with Rejection Frequencies Within and Beyond the Pass Band,” IEEE Transactions on Microwave Theory and Techniques, 2022.
  - BibTeX
  BibTeX
  @article{wagner2022single, author = {Wagner, D. and Kasparek, W. and Leuterer, F. and Monaco, F. and Plaum, B. and Ruess, T. and Schütz, H. and Stober, J. and Thumm, M.}, journal = {IEEE Transactions on Microwave Theory and Techniques}, note = {submitted}, title = {Single- and Two-Frequency Sub-THz Notch Filters with Rejection Frequencies Within and Beyond the Pass Band}, year = 2022 }
4. B. Plaum, “Simulation of microwave beams with PROFUSION,” Universität Stuttgart, 2022. doi: 10.18419/OPUS-12241.
  BibTeX
  @techreport{https://doi.org/10.18419/opus-12241, author = {Plaum, Burkhard}, copyright = {info:eu-repo/semantics/openAccess}, doi = {10.18419/OPUS-12241}, language = {en}, publisher = {Universität Stuttgart}, title = {Simulation of microwave beams with PROFUSION}, url = {http://elib.uni-stuttgart.de/handle/11682/12258}, year = 2022 }
  Link
  http://elib.uni-stuttgart.de/handle/11682/12258
  DOI
  10.18419/OPUS-12241
5. C. Lechte et al., “Fullwave Doppler Reflectometry Simulations Coupled with GENE Plasma Turbulence Simulations,” in Proceedings of the 15th International Reflectometry Workshop for fusion plasma diagnostics (IRW15), 2022.
  - BibTeX
  BibTeX
  @inproceedings{LECHTE2022IRW, author = {Lechte, C. and Happel, T. and H{\"o}fler, K. and G{\"o}rler, T. and Frank, A. and Conway, G.D. and {the ASDEX Upgrade Team}}, booktitle = {Proceedings of the 15th International Reflectometry Workshop for fusion plasma diagnostics (IRW15)}, number = {Accepted}, title = {Fullwave Doppler Reflectometry Simulations Coupled with {GENE} Plasma Turbulence Simulations}, year = 2022 }
2021
1. F. Fanale et al., “Design validation of in-vessel mirrors and beam dump for first plasma operations in ITER,” Fusion Engineering and Design, vol. 172, p. 112717, Nov. 2021, doi: 10.1016/j.fusengdes.2021.112717.
  BibTeX
  @article{Fanale_2021, author = {Fanale, F. and Bruschi, A. and Darcourt, O. and Farina, D. and Figini, L. and Gandini, F. and Henderson, M. and Hunt, R. and Lechte, C. and Moro, A. and Platania, P. and Plaum, B.}, doi = {10.1016/j.fusengdes.2021.112717}, journal = {Fusion Engineering and Design}, month = {11}, pages = 112717, publisher = {Elsevier {BV}}, title = {Design validation of in-vessel mirrors and beam dump for first plasma operations in {ITER}}, url = {https://doi.org/10.1016%2Fj.fusengdes.2021.112717}, volume = 172, year = 2021 }
  Link
  https://doi.org/10.1016%2Fj.fusengdes.2021.112717
  DOI
  10.1016/j.fusengdes.2021.112717
2. J. Lips, S. Heuraux, C. Lechte, and B. Plaum, “On frequency-independent horn antenna design for plasma positioning reflectometers, from simulation to prototype testing,” Journal of Instrumentation, vol. 16, Art. no. 07, Jul. 2021, doi: 10.1088/1748-0221/16/07/P07040.
  BibTeX
  @article{Lips_2021, abstract = {Using a new framework for horn antenna optimization, a first frequency-independent horn antenna for a plasma positioning reflectometer (PPR) is designed. This hardware optimization is a new approach aiming on lowering the computational complexity of PPR interpretative models able to extract profiles and fluctuations of electron density and temperature from reflectometry measurements. PPR measurements are a strong candidate to provide real-time feedback for plasma position control in long-discharge fusion tokamaks such as ITER and DEMO, which requires fast interpretative models. Reducing the computational complexity of these models is therefore critical. In this paper, ray tracing simulations in the poloidal plane are used to compare different radiation patterns and evaluate them on multiple performance criteria. An antenna shape leading to a frequency-independent far-field radiation diagram is found with the PROFUSION optimizer and a prototype of this antenna is tested against an unoptimized conical reference antenna. The ray tracing performance criteria indicate that fundamental Gaussian frequency-independent antennas perform well, albeit in general worse than same-sized frequency-dependent antennas. Furthermore, it is seen that the pyramidal ITER gap 6 antenna performs well given the spatial constraints and that more performant antennas could be used, when more space was available. The prototype testing reveals challenges in obtaining frequency-independent characteristics within a tokamak blanket environment, which is additionally complicated by misalignment risks.}, author = {Lips, J. and Heuraux, S. and Lechte, C. and Plaum, B.}, doi = {10.1088/1748-0221/16/07/P07040}, journal = {Journal of Instrumentation}, month = {07}, number = 07, pages = {P07040}, publisher = {IOP Publishing}, title = {On frequency-independent horn antenna design for plasma positioning reflectometers, from simulation to prototype testing}, url = {https://dx.doi.org/10.1088/1748-0221/16/07/P07040}, volume = 16, year = 2021 }
  Link
  https://dx.doi.org/10.1088/1748-0221/16/07/P07040
  DOI
  10.1088/1748-0221/16/07/P07040
3. Y. Corre et al., “Thermographic reconstruction of heat load on the first wall of Wendelstein 7-X due to ECRH shine-through power,” vol. 61, Art. no. 6, Apr. 2021, doi: 10.1088/1741-4326/abebea.
  BibTeX
  @article{CORRE2021, abstract = {Electron cyclotron resonance heating (ECRH) is a powerful and flexible plasma heating technique that serves as the main heater at Wendelstein 7-X (W7-X) and will be used at ITER for start-up, heating, current drive and mitigation of plasma instabilities. In the case of poor or degraded microwave absorption, which is expected in the O2-mode heating scenario, a significant part of the beam directly hits the wall, leading to local overheating and potential damage. The ECRH shine-through power is mostly reflected onto the targets; only a small fraction is really absorbed through ohmic losses (typically 3\% for graphite at 140 GHz). The ohmic losses do not only depend on the material properties and the frequency, but also on the polarization of the wave and the angle of incidence. This paper presents a thermographic analysis of ECRH experiments at W7-X, including heat load and temperature simulations of the first wall that include ECRH shine through. Two O-mode ECRH experiments with both a high temperature rise of the first wall and different angles of beam incidence on the wall’s surface are depicted. One experiment has 775 kW of power modulation (5 Hz) with mixed polarization (45\% O-mode, 55\% X-mode) and an EC beam angle almost normal to the first wall. The second has 550 kW of steady EC power with O-mode polarization, a shallow beam angle and increased power absorption by the material. It is shown that infrared thermography is a useful tool for measuring shine-through power and protecting wall components.}, author = {Corre, Y. and Gaspar, J. and Marsen, S. and Moseev, D. and Stange, T. and Boscary, J. and Drewelow, P. and Gao, Y. and Jakubowski, M. and Hillairet, J. and Laqua, H.P. and Lechte, C. and Moncada, V. and Niemann, H. and Preynas, M. and Sitjes, A. Puig}, doi = {10.1088/1741-4326/abebea}, month = {04}, number = 6, pages = 066002, publisher = {{IOP} Publishing}, title = {Thermographic reconstruction of heat load on the first wall of Wendelstein 7-X due to {ECRH} shine-through power}, url = {https://doi.org/10.1088/1741-4326/abebea}, volume = 61, year = 2021 }
  Link
  https://doi.org/10.1088/1741-4326/abebea
  DOI
  10.1088/1741-4326/abebea
4. C. Lechte, B. Plaum, and others, “Contributions to the New ECRH system for MAST-U,” Online, 2021.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2021drws, address = {Online}, author = {Lechte, C. and Plaum, B. and others}, note = {33rd Joint Russian-German Workshop on ECRH and Gyrotrons}, title = {Contributions to the New ECRH system for MAST-U}, year = 2021 }
2020
1. D. Moseev et al., “Collective Thomson Scattering Diagnostic for Wendelstein 7-X at 175 GHz,” Journal of Instrumentation, vol. 15, Art. no. 05, May 2020, doi: 10.1088/1748-0221/15/05/c05035.
  BibTeX
  @article{MOSEEV2020, abstract = {The Collective Thomson Scattering (CTS) diagnostic measures the scattering spectrum of incident radiation off collective fluctuations in plasmas. In Wendelstein 7-X (W7-X) the diagnostic uses a 140 GHz heating gyrotron as a source of the probing radiation. At this frequency, the CTS spectra are heavily affected by the electron cyclotron emission, and the microwave beam propagation is restricted at typical W7-X plasma parameters. The diagnostic was successfully commissioned in the last experimental campaign and demonstrated ion temperature measurements. However, the signal-to-noise ratio was too low for measuring other quantities such as the fast-ion velocity distribution function or the fuel ion ratio. Currently, the W7-X CTS diagnostic is undergoing an upgrade to a frequency of 175 GHz. This will increase the sensitivity of the diagnostic, since the noise due to electron cyclotron emission will be reduced, and it will relax the constraints on microwave beam propagation in W7-X. Here we present the salient features of the upgraded CTS system and discuss its prospects for both thermal-ion and fast-ion measurements.}, author = {Moseev, D. and Laqua, H.P. and Stange, T. and Abramovic, I. and Nielsen, S.K. and {\"A}k{\"a}slompolo, S. and Avramidis, K. and Braune, H. and Gantenbein, G. and Illy, S. and Jelonnek, J. and Jin, J. and Kasparek, W. and Krier, L. and Korsholm, S.B. and Lechte, C. and Marek, A. and Marsen, S. and Nishiura, M. and Pagonakis, I. and Salewski, M. and Rasmussen, J. and Tancetti, A. and Thumm, M. and Wolf, R.C.}, doi = {10.1088/1748-0221/15/05/c05035}, journal = {Journal of Instrumentation}, month = {05}, number = 05, pages = {C05035--C05035}, publisher = {{IOP} Publishing}, title = {Collective Thomson Scattering Diagnostic for {Wendelstein 7-X} at 175 {GHz}}, url = {https://doi.org/10.1088%2F1748-0221%2F15%2F05%2Fc05035}, volume = 15, year = 2020 }
  Link
  https://doi.org/10.1088%2F1748-0221%2F15%2F05%2Fc05035
  DOI
  10.1088/1748-0221/15/05/c05035
2. C. Lechte et al., “Advanced ECRH components for ITER: Fast switches and reflector gratings,” Online, 2020.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2020drws, address = {Online}, author = {Lechte, C. and Broekens, K. and Bruschi, A. and Fanale, F. and Idei, H. and Kajiwara, K. and Kasparek, W. and Klop, W. and Moro, A. and Plaum, B. and Schubert, M. and Stober, J. and Wagner, D.}, note = {32nd Joint Russian-German Workshop on ECRH and Gyrotrons}, title = {Advanced ECRH components for ITER: Fast switches and reflector gratings}, year = 2020 }
3. O. L. Krutkin et al., “Investigation of nonlinear effects in Doppler reflectometry using full-wave synthetic diagnostics,” Plasma Science and Technology, vol. 22, Art. no. 6, 2020, doi: 10.1088/2058-6272/ab5c28.
  BibTeX
  @article{KRUTKIN2019PST, abstract = {In this work, Doppler reflectometry (DR) and radial correlation DR (RCDR) nonlinear scattering effects are studied using full-wave modeling with a set of representative FT-2 tokamak turbulence as inputs. Narrowing of the RCDR correlation function and widening of the DR poloidal wavenumber spectrum are demonstrated. An effect on the dependence of the DR signal frequency shift on the probing wavenumber is found, namely, this dependence ‘linearizing’ in the nonlinear scattering regime. Nonlinear effects are shown to be weaker for O-mode probing than for X-mode probing, while a faster transition to nonlinear regime is demonstrated for RCDR compared to DR in both probing scenarios.}, author = {Krutkin, O. L. and Altukhov, A.B. and Gurchenko, A.D. and Gusakov, E.Z. and Heuraux, S. and end L.A. Esipov, M.A. Irzak and Kiviniemi, T.P. and Lechte, C. and Leerink, S. and Niskala, P. and Zadvitskiy, G.}, doi = {10.1088/2058-6272/ab5c28}, journal = {Plasma Science and Technology}, number = 6, pages = 064001, publisher = {{IOP} Publishing}, title = {Investigation of nonlinear effects in {Doppler} reflectometry using full-wave synthetic diagnostics}, url = {https://doi.org/10.1088%2F2058-6272%2Fab5c28}, volume = 22, year = 2020 }
  Link
  https://doi.org/10.1088%2F2058-6272%2Fab5c28
  DOI
  10.1088/2058-6272/ab5c28
4. V. V. Bulanin et al., “Full-Wave Modeling of Doppler Backscattering from Filaments,” Plasma Physics Reports, vol. 46, pp. 490–495, 2020, doi: 10.1134/S1063780X20050025.
  - BibTeX
  - DOI
  BibTeX
  @article{BULANINTEPLOVA2020, author = {Bulanin, V. V. and Gusakov, E. Z. and Gusev, V. K. and Zadvitskiy, G. and Lechte, C. and Heuraux, S. and Minaev, V. B. and Petrov, A. V. and Petrov, Yu. V. and Sakharov, N. V. and Teplova, N. and Yashin, A. Yu.}, doi = {10.1134/S1063780X20050025}, journal = {Plasma Physics Reports}, pages = {490-495}, title = {Full-Wave Modeling of Doppler Backscattering from Filaments}, volume = 46, year = 2020 }
  DOI
  10.1134/S1063780X20050025
5. C. Lechte, G. D. Conway, T. Görler, T. Happel, and the ASDEX Upgrade Team, “Fullwave Doppler Reflectometry Simulations for Density Turbulence Spectra in ASDEX Upgrade Using GENE and IPF-FD3D,” Plasma Sci. Technol., Art. no. 22, 2020, doi: 10.1088/2058-6272/ab7ce8.
  BibTeX
  @article{LECHTE2019PST, author = {Lechte, C. and Conway, G.D. and G{\"o}rler, T. and Happel, T. and {the ASDEX Upgrade Team}}, doi = {10.1088/2058-6272/ab7ce8}, journal = {Plasma Sci. Technol.}, number = 22, pages = 064006, title = {Fullwave {Doppler} Reflectometry Simulations for Density Turbulence Spectra in {ASDEX Upgrade} Using {GENE} and {IPF-FD3D}}, url = {http://iopscience.iop.org/10.1088/2058-6272/ab7ce8}, year = 2020 }
  Link
  http://iopscience.iop.org/10.1088/2058-6272/ab7ce8
  DOI
  10.1088/2058-6272/ab7ce8
2019
1. D. Moseev et al., “Collective Thomson scattering diagnostic at Wendelstein 7-X,” Rev. Sci. Instrum., vol. 90, p. 13503, 2019, doi: 10.1063/1.5050193.
  - BibTeX
  - DOI
  BibTeX
  @article{MOSEEV2019CTS, author = {Moseev, D. and Stejner, M. and Stange, T. and Abramovic, I. and Laqua, H. P. and Marsen, S. and Schneider, N. and Braune, H. and Hoefel, U. and Kasparek, W. and Korsholm, S. B. and Lechte, C. and Leipold, F. and Nielsen, S. K. and Salewski, M. and Rasmussen, J. and Wei{\ss}gerber, M. and Wolf, R. C.}, doi = {10.1063/1.5050193}, journal = {Rev. Sci. Instrum.}, pages = 013503, title = {Collective {Thomson} scattering diagnostic at {Wendelstein 7-X}}, volume = 90, year = 2019 }
  DOI
  10.1063/1.5050193
2. C. Lechte, G. D. Conway, T. Görler, T. Happel, and the ASDEX Upgrade Team, “Fullwave Doppler Reflectometry Simulations for Turbulence Spectra Using GENE and IPF-FD3D,” in Proceedings of the 14th International Reflectometry Workshop (IRW14), 2019.
  - BibTeX
  BibTeX
  @inproceedings{LECHTE2019IRW, author = {Lechte, C. and Conway, G.D. and G{\"o}rler, T. and Happel, T. and {the ASDEX Upgrade Team}}, booktitle = {Proceedings of the 14th International Reflectometry Workshop (IRW14)}, number = {O.214}, title = {Fullwave {Doppler} Reflectometry Simulations for Turbulence Spectra Using {GENE} and {IPF-FD3D}}, year = 2019 }
3. O. Krutkin et al., “Validation of full-f global gyrokinetic modeling results against the FT-2 tokamak Doppler reflectometry data using synthetic diagnostics,” Nucl. Fusion, vol. 59, Art. no. 096017, 2019, doi: 10.1088/1741-4326/ab1cfb.
  - BibTeX
  - DOI
  BibTeX
  @article{ALTUKHOV2019, author = {Krutkin, Oleg and Altukhov, Alexey and Gurchenko, Alexey and Gusakov, Evgeniy and Irzak, Michael and Esipov, Lev and Sidorov, Anton and Ch{\^o}n{\'e}, Laurent and Kiviniemi, Timo and Leerink, Susan and Niskala, Paavo and Lechte, Carsten and Heuraux, St{\'e}phane}, doi = {10.1088/1741-4326/ab1cfb}, journal = {Nucl. Fusion}, number = 096017, title = {Validation of full-f global gyrokinetic modeling results against the {FT-2} tokamak {Doppler} reflectometry data using synthetic diagnostics}, volume = 59, year = 2019 }
  DOI
  10.1088/1741-4326/ab1cfb
4. C. Lechte, W. Kasparek, B. Plaum, M. Schubert, and J. Stober, “3D Simulation Of The Performance Of Reflector Gratings For High Power MM Waves,” Lenggries, Germany, 2019.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2019drws, address = {Lenggries, Germany}, author = {Lechte, C. and Kasparek, W. and Plaum, B. and Schubert, M. and Stober, J.}, note = {31st Joint Russian-German Workshop on ECRH and Gyrotrons}, title = {3D Simulation Of The Performance Of Reflector Gratings For High Power MM Waves}, year = 2019 }
5. G. D. Conway, C. Lechte, E. Poli, O. Maj, and the ASDEX Upgrade Team, “Recent progress in modelling the resolution and localization of Doppler reflectometry measurements,” in Proceedings of the 14th International Reflectometry Workshop (IRW14), 2019. [Online]. Available: https://www.aug.ipp.mpg.de/IRW/IRW14/papers/213-IRW14-Conway-paper.pdf
  - BibTeX
  - Link
  BibTeX
  @inproceedings{CONWAY2019IRW, author = {Conway, G. D. and Lechte, C. and Poli, E. and Maj, O. and the {ASDEX Upgrade Team}}, booktitle = {{Proceedings of the 14th International Reflectometry Workshop (IRW14)}}, number = {O.213}, title = {Recent progress in modelling the resolution and localization of {Doppler} reflectometry measurements}, url = {https://www.aug.ipp.mpg.de/IRW/IRW14/papers/213-IRW14-Conway-paper.pdf}, year = 2019 }
  Link
  https://www.aug.ipp.mpg.de/IRW/IRW14/papers/213-IRW14-Conway-paper.pdf
2018
1. R. C. Wolf et al., “Electron-cyclotron-resonance heating in Wendelstein 7-X: A versatile heating and current-drive method and a tool for in-depth physics studies,” Plasma Physics and Controlled Fusion, vol. 61, Art. no. 1, Nov. 2018, doi: 10.1088/1361-6587/aaeab2.
  BibTeX
  @article{Wolf_2018, abstract = {For stellarators, which need no or only small amounts of current drive, electron-cyclotron-resonance heating (ECRH) is a promising heating method even for the envisaged application in a fusion power plant. Wendelstein 7-X (W7-X) is equipped with a steady-state capable ECRH system, operating at 140 GHz, which corresponds to the 2nd cyclotron harmonic of the electrons at a magnetic field of 2.5 T. Ten gyrotrons are operational and already delivered 7 MW to W7-X plasmas. Combined with pellet injection, the highest triple product (0.68 × 1020 keV m−3 s), observed up to now in stellarators, was achieved (Sunn Pedersen et al 2018 Plasma Phys. Control. Fusion 61 014035). For the first time, W7-X plasmas were sustained by 2nd harmonic O-mode heating, approaching the collisionality regime for which W7-X was optimized. Power deposition scans did not show any indication of electron temperature profile resilience. In low-density, low-power plasmas a compensation of the bootstrap current with electron-cyclotron current drive (ECCD) was demonstrated. Sufficiently strong ECCD close to the plasma centre produced periodic internal plasma-crash events, which coincide with the appearance of low order rationals of the rotational transform.}, author = {Wolf, R C and Bozhenkov, S and Dinklage, A and Fuchert, G and Kazakov, Y O and Laqua, H P and Marsen, S and Marushchenko, N B and Stange, T and Zanini, M and Abramovic, I and Alonso, A and Baldzuhn, J and Beurskens, M and Beidler, C D and Braune, H and Brunner, K J and Chaudhary, N and Damm, H and Drewelow, P and Gantenbein, G and Gao, Yu and Geiger, J and Hirsch, M and Höfel, U and Jakubowski, M and Jelonnek, J and Jensen, T and Kasparek, W and Knauer, J and Korsholm, S B and Langenberg, A and Lechte, C and Leipold, F and Mora, H Trimino and Neuner, U and Nielsen, S K and Moseev, D and Oosterbeek, H and Pablant, N and Pasch, E and Plaum, B and Pedersen, T Sunn and Sitjes, A Puig and Rahbarnia, K and Rasmussen, J and Salewski, M and Schilling, J and Scott, E and Stejner, M and Thomsen, H and Thumm, M and Turkin, Y and Wilde, F}, doi = {10.1088/1361-6587/aaeab2}, journal = {Plasma Physics and Controlled Fusion}, month = {11}, number = 1, pages = 014037, publisher = {{IOP} Publishing}, title = {Electron-cyclotron-resonance heating in Wendelstein 7-X: A versatile heating and current-drive method and a tool for in-depth physics studies}, url = {https://doi.org/10.1088%2F1361-6587%2Faaeab2}, volume = 61, year = 2018 }
  Link
  https://doi.org/10.1088%2F1361-6587%2Faaeab2
  DOI
  10.1088/1361-6587/aaeab2
2. T. Windisch et al., “Phased array Doppler reflectometry at Wendelstein 7-X,” Review of Scientific Instruments, vol. 89, Art. no. 10, Oct. 2018, doi: 10.1063/1.5039287.
  - BibTeX
  - DOI
  BibTeX
  @article{WINDISCH2018, author = {Windisch, T. and Wolf, S. and Weir, G. M. and Bozhenkov, S. A. and Damm, H. and Fuchert, G. and Grulke, O. and Hirsch, M. and Kasparek, W. and Klinger, T. and Lechte, C. and Pasch, E. and Plaum, B. and Scott, E. A.}, booktitle = {Proceedings HTPD}, doi = {10.1063/1.5039287}, journal = {Review of Scientific Instruments}, month = {10}, number = 10, pages = {10H115}, publisher = {{AIP} Publishing}, title = {Phased array {Doppler} reflectometry at Wendelstein 7-X}, volume = 89, year = 2018 }
  DOI
  10.1063/1.5039287
3. C. Lechte, G. D. Conway, T. Görler, T. Happel, C. Tröster-Schmid, and the ASDEX Upgrade Team, “Using Fullwave Simulations to Understand the Turbulent Wavenumber Spectrum Measured by Doppler Reflectometry,” EPJ Web Conf., 2018.
  - BibTeX
  BibTeX
  @article{LECHTE2018drwsdopp, author = {Lechte, C. and Conway, G. D. and G{\"o}rler, T. and Happel, T. and Tr{\"o}ster-Schmid, C. and {the ASDEX Upgrade Team}}, journal = {EPJ Web Conf.}, note = {30th German-Russian Joint Meeting on ECRH and Gyrotrons (RGM2018)}, title = {Using Fullwave Simulations to Understand the Turbulent Wavenumber Spectrum Measured by {Doppler} Reflectometry}, year = 2018 }
4. A. Zach et al., “In-situ real-time monitoring of spurious modes in HE11 transmission lines using multi-hole couplers in miter bends,” EPJ Web Conf., 2018.
  - BibTeX
  BibTeX
  @article{ZACH2018, author = {Zach, Alexander and Kasparek, Walter and Lechte, Carsten and Plaum, Burkhard and Monaco, Francesco and Sch{\"u}tz, Harald and Stober, J{\"o}rg and Idei, Hiroshi and Hirth, Thomas}, journal = {EPJ Web Conf.}, note = {20th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating}, title = {In-situ real-time monitoring of spurious modes in HE11 transmission lines using multi-hole couplers in miter bends}, year = 2018 }
5. R. C. Wolf et al., “Electron-cyclotron-resonance heating in Wendelstein 7-X: A versatile heating and current-drive method and a tool for in-depth physics studies,” Plasma Phys. Contr. Fusion, 2018.
  - BibTeX
  BibTeX
  @article{WOLF2018ecrhcd, author = {Wolf, R. C. and Bozhenkov, S. and Dinklage, A. and Fuchert, G. and Laqua, H. P. and Marsen, S. and Marushchenko, N. B. and Stange, T. and Zanini, M. and Abramovic, I. and Alonso, A. and Baldzuhn, J. and Beurskens, M. and Beidler, C. D. and Braune, H. and Brunner, K. J. and Chaudhary, N. and Damm, H. and Gantenbein, G. and Geiger, J. and Hirsch, M. and H{\"o}fel, U. and Jelonnek, J. and Kasakov, Y. O. and Kasparek, W. and Knauer, J. and Langenberg, A. and Lechte, C. and Mora, H. Trimino and Neuner, U. and Moseev, D. and Oosterbeek, H. and Pablant, N. and Pasch, E. and Plaum, B. and Pedersen, Thomas Sunn and Rhabarnia, K. and Schilling, J. and Scott, E. and Thomsen, H. and Thumm, M. and Turkin, Y. and Wilde, F. and the {Wendelstein 7-X Team}}, journal = {Plasma Phys. Contr. Fusion}, note = {accepted}, title = {Electron-cyclotron-resonance heating in Wendelstein 7-X: A versatile heating and current-drive method and a tool for in-depth physics studies}, year = 2018 }
6. G. V. Zadvitskiy, S. Heuraux, C. Lechte, S. Hacquin, and R. Sabot, “Edge turbulence effect on ultra-fast swept reflectometry core measurements in tokamak plasmas,” Plasma Physics and Controlled Fusion, vol. 60, Art. no. 2, 2018, [Online]. Available: http://stacks.iop.org/0741-3335/60/i=2/a=025025
  - BibTeX
  - Link
  BibTeX
  @article{ZADVITSKIY2018, author = {Zadvitskiy, G V and Heuraux, S and Lechte, C and Hacquin, S and Sabot, R}, journal = {Plasma Physics and Controlled Fusion}, number = 2, pages = 025025, title = {Edge turbulence effect on ultra-fast swept reflectometry core measurements in tokamak plasmas}, url = {http://stacks.iop.org/0741-3335/60/i=2/a=025025}, volume = 60, year = 2018 }
  Link
  http://stacks.iop.org/0741-3335/60/i=2/a=025025
7. B. Plaum, “Optimization of Broadband Smooth-Wall Circular Horn Antennas,” Journal of Infrared Millimeter and Terahertz Waves, vol. 39, Art. no. 10, 2018, doi: 10.1007/s10762-018-0510-6.
  - BibTeX
  - DOI
  BibTeX
  @article{plaum2018optimization, affiliation = {Plaum, B (Reprint Author), Univ Stuttgart, Inst Interfacial Proc Engn & Plasma Technol, Pfaffenwaldring 31, D-70569 Stuttgart, Germany. Plaum, Burkhard, Univ Stuttgart, Inst Interfacial Proc Engn & Plasma Technol, Pfaffenwaldring 31, D-70569 Stuttgart, Germany.}, author = {Plaum, Burkhard}, doi = {10.1007/s10762-018-0510-6}, issn = {{1866-6892} and {1866-6906}}, journal = {Journal of Infrared Millimeter and Terahertz Waves}, language = {eng}, number = 10, orcid-numbers = {Plaum, Burkhard/0000-0001-8518-3632}, pages = {984-995}, publisher = {Springer}, research-areas = {Engineering; Optics; Physics}, title = {Optimization of Broadband Smooth-Wall Circular Horn Antennas}, unique-id = {ISI:000443406100005}, volume = 39, year = 2018 }
  DOI
  10.1007/s10762-018-0510-6
8. B. Plaum et al., “Synthesis of reflection gratings for advanced plasma heating scenarios,” EPJ Web Conf., 2018.
  - BibTeX
  BibTeX
  @article{PLAUM2018drwsgrat, author = {Plaum, B. and Schubert, M. and Zeitler, A. and Kasparek, W. and Lechte, C. and Stober, J. and {the ASDEX Upgrade Team}}, journal = {EPJ Web Conf.}, note = {30th German-Russian Joint Meeting on ECRH and Gyrotrons (RGM2018)}, title = {Synthesis of reflection gratings for advanced plasma heating scenarios}, year = 2018 }
9. A. Altukhov et al., “Benchmarking of Full-f Global Gyrokinetic Modeling Results Against the FT-2 Tokamak Doppler Reflectometry Data Using Synthetic Diagnostics,” in IEEE Conference Proceedings, 2018.
  - BibTeX
  BibTeX
  @inproceedings{ALTHUKOV2018, author = {Altukhov, A. and Gurchenko, A. and Gusakov, E. and Irzak, M. and Krutkin, O. and Esipov, L. and Niskala, P. and Kiviniemi, T.P. and Leerink, S. and Lechte, C. and Heuraux, S.}, journal = {IEEE Conference Proceedings}, note = {submitted}, title = {Benchmarking of Full-f Global Gyrokinetic Modeling Results Against the FT-2 Tokamak {Doppler} Reflectometry Data Using Synthetic Diagnostics}, year = 2018 }
10. C. Lechte, “Doppler Reflectometry Graphical Demonstration Movie Simulated With IPF-FD3D,” 2018, doi: 10.5281/zenodo.3696852.
  BibTeX
  @article{LECHTEmovie2018, author = {Lechte, Carsten}, doi = {10.5281/zenodo.3696852}, title = {{Doppler} Reflectometry Graphical Demonstration Movie Simulated With {IPF-FD3D}}, url = {https://doi.org/10.5281/zenodo.3696852}, year = 2018 }
  Link
  https://doi.org/10.5281/zenodo.3696852
  DOI
  10.5281/zenodo.3696852
11. B. Plaum et al., “Development of reflection gratings for advanced ECRH scenarios,” EPJ Web Conf., 2018, doi: todo.
  - BibTeX
  - DOI
  BibTeX
  @article{PLAUM2018EC20, author = {Plaum, B. and Schubert, M. and Zeitler, A. and Kasparek, W. and Lechte, C. and Stober, J. and {the ASDEX Upgrade Team}}, doi = {todo}, journal = {EPJ Web Conf.}, note = {20th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating}, title = {Development of reflection gratings for advanced {ECRH} scenarios}, year = 2018 }
  DOI
  todo
12. O. L. Krutkin, E. Z. Gusakov, S. Heuraux, and C. Lechte, “Nonlinear Doppler reflectometry power response. Analytical predictions and full-wave modelling,” Plasma Phys. Contr. Fusion, 2018.
  - BibTeX
  BibTeX
  @article{KRUTKIN2018, author = {Krutkin, O. L. and Gusakov, E. Z. and Heuraux, S. and Lechte, C.}, journal = {Plasma Phys. Contr. Fusion}, note = {submitted}, title = {Nonlinear {Doppler} reflectometry power response. Analytical predictions and full-wave modelling}, year = 2018 }
13. C. Lechte et al., “Simulation of Polarising and Reflecting Gratings for High Power mm Waves,” EPJ Web Conf., 2018, doi: https://doi.org/10.1051/epjconf/201920304010.
  - BibTeX
  - DOI
  BibTeX
  @article{LECHTE2018EC20, author = {Lechte, C. and Kasparek, W. and Plaum, B. and Leuterer, F. and Schubert, M. and Stober, J. and Wagner, D.}, doi = {https://doi.org/10.1051/epjconf/201920304010}, journal = {EPJ Web Conf.}, note = {20th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating}, title = {Simulation of Polarising and Reflecting Gratings for High Power mm Waves}, year = 2018 }
  DOI
  https://doi.org/10.1051/epjconf/201920304010
2017
1. G. V. Zadvitskiy, S. Heuraux, C. Lechte, S. Hacquin, and R. Sabot, “Edge turbulence effects on core radial k-spectrum extracted from reflectometry data,” 2017.
  - BibTeX
  BibTeX
  @inproceedings{ZADVITSKIY2017EPS, author = {Zadvitskiy, G. V. and Heuraux, S. and Lechte, C. and Hacquin, S. and Sabot, R.}, note = {44th EPS Conf. on Plasma Phys. (Belfast) 26 - 30th June 2017}, title = {Edge turbulence effects on core radial k-spectrum extracted from reflectometry data}, year = 2017 }
2. G. D. Conway, C. Lechte, P. Hennequin, P. Simon, and the ASDEX Upgrade Team, “Investigation of turbulence properties via spectral broadening of Doppler reflectometry signals in ASDEX Upgrade,” 2017.
  - BibTeX
  BibTeX
  @inproceedings{CONWAY2017EPS, author = {Conway, G. D. and Lechte, C. and Hennequin, P. and Simon, P. and the {ASDEX} Upgrade Team}, note = {44th EPS Conf. on Plasma Phys. (Belfast) 26 - 30th June 2017}, title = {Investigation of turbulence properties via spectral broadening of {Doppler} reflectometry signals in {ASDEX} Upgrade}, year = 2017 }
3. C. Lechte, G. D. Conway, T. Görler, C. Tröster, and the ASDEX Upgrade Team, “Doppler Reflectometry $k$-spectral measurements in ASDEX Upgrade: Experiments and simulations,” Plasma Phys. Contr. Fusion, vol. 59, Art. no. 7, 2017, doi: 10.1088/1361-6587/aa6fe7.
  - BibTeX
  - DOI
  BibTeX
  @article{LECHTE2017dopp, author = {Lechte, C. and Conway, G. D. and G{\"o}rler, T. and Tr{\"o}ster, C. and the {ASDEX Upgrade Team}}, doi = {10.1088/1361-6587/aa6fe7}, journal = {Plasma Phys. Contr. Fusion}, number = 7, pages = 075006, title = {{Doppler} Reflectometry $k$-spectral measurements in {ASDEX Upgrade}: Experiments and simulations}, volume = 59, year = 2017 }
  DOI
  10.1088/1361-6587/aa6fe7
4. O. L. Krutkin et al., “Synthetic radial correlation Doppler reflectometry diagnostic for FT-2 tokamak,” 2017.
  - BibTeX
  BibTeX
  @inproceedings{KRUTKIN2017EPS, author = {Krutkin, O. L. and Altukhov, A. B. and Gurchenko, A. D. and Gusakov, E. Z. and Heuraux, S. and Irzak, M. A. and Niskala, P. and Zadvitskiy, G. and Esipov, L. A. and Kiviniemi, T. P. and Lechte, C. and Leerink, S.}, note = {44th EPS Conf. on Plasma Phys. (Belfast) 26 - 30th June 2017}, title = {Synthetic radial correlation {Doppler} reflectometry diagnostic for {FT-2} tokamak}, year = 2017 }
5. F. Leuterer, D. Wagner, J. Stober, W. Kasparek, C. Lechte, and ASDEX Upgrade Team, “Experimental Study of Ohmic Losses of Polarizer Mirror Systems,” EPJ Web Conf., vol. 149, p. 3002, 2017, doi: 10.1051/epjconf/201714903002.
  - BibTeX
  - DOI
  BibTeX
  @article{LEUTERER2017, author = {Leuterer, F. and Wagner, D. and Stober, J. and Kasparek, W. and Lechte, C. and {ASDEX Upgrade Team}}, doi = {10.1051/epjconf/201714903002}, journal = {EPJ Web Conf.}, pages = 03002, title = {Experimental Study of Ohmic Losses of Polarizer Mirror Systems}, volume = 149, year = 2017 }
  DOI
  10.1051/epjconf/201714903002
6. C. Lechte, G. D. Conway, T. Görler, C. Tröster, and the ASDEX Upgrade Team, “Using Fullwave Simulations to Understand the Turbulent Wavenumber Spectrum Measured by Doppler Reflectometry,” 2017.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2017TALKDEUTSCHRUSS, author = {Lechte, C. and Conway, G.D. and G{\"o}rler, T. and Tr{\"o}ster, C. and the {ASDEX Upgrade Team}}, note = {29th Joint Russian-German Workshop on {ECRH} and Gyrotrons ({STC}-Meeting)}, title = {Using Fullwave Simulations to Understand the Turbulent Wavenumber Spectrum Measured by {Doppler} Reflectometry}, year = 2017 }
7. A. Zach et al., “New Developments for EC Heating diagnostics,” EPJ Web of Conferences, vol. 147, 2017.
  - BibTeX
  BibTeX
  @article{PLAUM2016A, author = {Zach, A. and Plaum, B. and Kasparek, W. and Lechte, C. and Zeitler, A. and Roth, B. and Stober, J. and Wagner, D. and Monaco, F. and Sch{\"u}tz, H. and Laqua, H. and T., Stange and {Noke, F. Purps}, F. and Hollmann, F. and Idei, H. and {ECRH Teams at Wendelstein 7-X and ASDEX-Upgrade}}, journal = {EPJ Web of Conferences}, note = {Proceedings of the EC-19 Workshop, to be published}, title = {New Developments for {EC} Heating diagnostics}, volume = 147, year = 2017 }
8. T. Happel et al., “Comparison of detailed experimental wavenumber spectra with gyrokinetic simulation aided by two-dimensional full-wave simulations,” Plasma Phys. Contr. Fusion, vol. 59, Art. no. 5, 2017, doi: 10.1088/1361-6587/aa645b.
  - BibTeX
  - DOI
  BibTeX
  @article{HAPPEL2017, author = {Happel, T. and G{\"o}rler, T. and Lechte, C. and Bernert, M. and Conway, G. D. and Freethy, S. J. and Hennequin, P. and Honor{\'e}, C. and Pinz{\'o}n, J. and Stroth, U. and the {ASDEX Upgrade Team}}, doi = {10.1088/1361-6587/aa645b}, journal = {Plasma Phys. Contr. Fusion}, number = 5, pages = 054009, title = {Comparison of detailed experimental wavenumber spectra with gyrokinetic simulation aided by two-dimensional full-wave simulations}, volume = 59, year = 2017 }
  DOI
  10.1088/1361-6587/aa645b
9. Z. C. Ioannidis et al., “CW Experiments With the EU 1-MW, 170-GHz Industrial Prototype Gyrotron for ITER at KIT,” IEEE Transactions on Electron Devices, vol. 64, Art. no. 9, 2017, doi: 10.1109/TED.2017.2730242.
  - BibTeX
  - DOI
  BibTeX
  @article{IOANNIDIS2017ITERGYROTRON, author = {Ioannidis, Z. C. and Rzesnicki, T. and Albajar, F. and Alberti, S. and Avramidis, K. A. and Bin, W. and Bonicelli, T. and Bruschi, A. and Chelis, I. and Frigot, P. E. and Gantenbein, G. and Hermann, V. and Hogge, J. P. and Illy, S. and Jin, J. and Jelonnek, J. and Kasparek, W. and Latsas, G. and Lechte, C. and Legrand, F. and Kobarg, T. and Pagonakis, I. G. and Rozier, Y. and Schlatter, C. and Schmid, M. and Tigelis, I. G. and Thumm, M. and Tran, M. Q. and Zein, A. and Zisis, A.}, doi = {10.1109/TED.2017.2730242}, issn = {0018-9383}, journal = {{IEEE Transactions on Electron Devices}}, number = 9, pages = {3885--3892}, title = {{CW Experiments With the EU 1-MW, 170-GHz Industrial Prototype Gyrotron for ITER at KIT}}, volume = 64, year = 2017 }
  DOI
  10.1109/TED.2017.2730242
10. C. Lechte et al., “Remote-Steering Antennas for 140 GHz Electron Cyclotron Heating of the Stellarator W7-X,” EPJ Web Conf., vol. 147, Art. no. 04004, 2017, doi: 10.1051/epjconf/201714704004.
  - BibTeX
  - DOI
  BibTeX
  @article{LECHTE2017EC19, author = {Lechte, C. and Kasparek, W. and Plaum, B. and Zeitler, A. and Erckmann, V. and Laqua, H. and Schneider, N. and Weissgerber, M. and Bechtold, A. and Busch, M. and Szepaniak, B.}, doi = {10.1051/epjconf/201714704004}, journal = {EPJ Web Conf.}, note = {19th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating}, number = 04004, pages = 5, title = {Remote-Steering Antennas for 140 {GH}z Electron Cyclotron Heating of the Stellarator {W7-X}}, volume = 147, year = 2017 }
  DOI
  10.1051/epjconf/201714704004
2016
1. C. Lechte et al., “Water-cooled cw loads for high-power millimetre waves,” Leinsweiler, Germany, Sep. 2016.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2016load, address = {Leinsweiler, Germany}, author = {Lechte, C. and Kasparek, W. and Plaum, B. and Roth, B. and Zeitler, A. and Laqua, H. and Wagner, D.}, month = {09}, note = {US-EU-JPN RF Heating Technology Workshop}, title = {Water-cooled cw loads for high-power millimetre waves}, year = 2016 }
2. J.-P. Hogge et al., “Status and Experimental Results of the European 1 MW, 170 GHz Industrial CW Prototype Gyrotron for ITER,” 2016.
  - BibTeX
  BibTeX
  @inproceedings{HOGGE2016, author = {Hogge, J.-P. and Albajar, F. and Alberti, S. and Avramidis, K. and Bin, W. and Bonicelli, T. and Braunmueller, F. and Bruschi, A. and Chelis, J. and Frigot, P.-E. and Gantenbein, G. and Hermann, V. and Illy2, S. and Ioannidis, Z. C. and Jelonnek, J. and Jin, J. and Kasparek, W. and Kobarg, T. and Latsas, G. P. and Lechte, C. and Lontano, M. and Losert, M. and Pagonakis, I. G. and Rozier, Y. and Rzesnicki, T. and Schlatter, C. and Schmid, M. and Thumm, M. and Tigelis, I. G. and Q. Tran, M. and Vomvoridis, J. L. and Zisis, A.}, note = {Proceedings of the IRMMW-THz Conference}, title = {Status and Experimental Results of the European 1 {MW}, 170 {GH}z Industrial {CW} Prototype Gyrotron for {ITER}}, year = 2016 }
3. C. Lechte, G. D. Conway, T. Görler, C. Tröster, and the ASDEX Upgrade Team, “Doppler Reflectometry Simulations for ASDEX Upgrade and Comparison with Experiment,” 2016.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2016russrsl, author = {Lechte, C. and Conway, G. D. and G{\"o}rler, T. and Tr{\"o}ster, C. and the {ASDEX Upgrade Team}}, note = {28th Joint Russian-German Workshop on {ECRH} and Gyrotrons ({STC}-Meeting)}, title = {{Doppler Reflectometry Simulations for ASDEX Upgrade and Comparison with Experiment}}, year = 2016 }
4. C. Lechte et al., “Remote-Steering Antennas for 140 GHz Electron Cyclotron Heating of the Stellarator W7-X,” 2016.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2016russdopp, author = {Lechte, C. and Kasparek, W. and Plaum, B. and Zeitler, A. and Erckmann, V. and Laqua, H. and Schneider, N. and Weissgerber, M. and Bechtold, A. and Busch, M. and Szepaniak, B.}, note = {28th Joint Russian-German Workshop on {ECRH} and Gyrotrons ({STC}-Meeting)}, title = {Remote-Steering Antennas for 140 {GH}z Electron Cyclotron Heating of the Stellarator {W7-X}}, year = 2016 }
5. G. Zadvitskiy et al., “On the possibility to use a fast 2D interpretative model for analysis of fusion plasma turbulence from reflectometry data,” 2016.
  - BibTeX
  BibTeX
  @inproceedings{ZADVITSKIY2016epspaper, author = {Zadvitskiy, G. and Heuraux, S. and Lechte, C. and Hacquin, S. and Sabot, R. and Gusakov, E. Z. and Popov, A. Yu.}, note = {Proceedings of EPS 43rd Conference on Plasma Physics}, title = {On the possibility to use a fast {2D} interpretative model for analysis of fusion plasma turbulence from reflectometry data}, year = 2016 }
6. G. Zadvitskiy, S. Heuraux, C. Lechte, S. Hacquin, R. Sabot, and F. Clairet, “On the possibility to use a fast 2D interpretative model for analysis of fusion plasma turbulence from reflectometry data,” 2016.
  - BibTeX
  BibTeX
  @unpublished{ZADVITSKIY2016eps, author = {Zadvitskiy, G. and Heuraux, S. and Lechte, C. and Hacquin, S. and Sabot, R. and Clairet, F.}, note = {EPS 43rd Conference on Plasma Physics}, title = {On the possibility to use a fast {2D} interpretative model for analysis of fusion plasma turbulence from reflectometry data}, year = 2016 }
7. D. Wagner et al., “Status, Operation, and Extension of the ECRH System at ASDEX Upgrade,” Journal of infrared millimeter and terahertz waves, vol. 37, Art. no. 1, 2016, doi: 10.1007/s10762-015-0187-z.
  - BibTeX
  - DOI
  BibTeX
  @article{wagner2016status, affiliation = {Wagner, D (Reprint Author), Max Planck Inst Plasma Phys, Boltzmannstr 2, D-85748 Garching, Germany. Wagner, D.; Stober, J.; Leuterer, F.; Monaco, F.; Muller, S.; Muenich, M.; Rapson, C. J.; Reich, M.; Schubert, M.; Schuetz, H.; Treutterer, W.; Zohm, H., Max Planck Inst Plasma Phys, D-85748 Garching, Germany. Thumm, M.; Gantenbein, G.; Jelonnek, J., Inst Hochleistungsimpuls & Mikrowellentech, Karlsruhe, Germany. Scherer, T.; Meier, A., Karlsruhe Inst Technol, Inst Angew Mat AWP, D-76131 Karlsruhe, Germany. Kasparek, W.; Lechte, C.; Plaum, B., Univ Stuttgart, Inst Grenzflachenverfahrenstech & Plasmatechnol, D-70569 Stuttgart, Germany. Goodman, T., Ecole Polytech Fed Lausanne, Ctr Rech Phys Plasmas, CH-1015 Lausanne, Switzerland. Litvak, A. G.; Denisov, G. G.; Chirkov, A.; Zapevalov, V.; Malygin, V., RAS, Inst Appl Phys, Nizhnii Novgorod 603950, Russia. Popov, L. G.; Nichiporenko, V. O.; Myasnikov, V. E.; Tai, E. M.; Solyanova, E. A.; Malygin, S. A., GYCOM Ltd, Nizhnii Novgorod 603155, Russia.}, author = {Wagner, D. and Stober, J. and Leuterer, F. and Monaco, F. and Müller, S. and Münich, M. and Rapson, C. J. and Reich, M. and Schubert, M. and Schütz, H. and Treutterer, W. and Zohm, H. and Thumm, M. and Scherer, T. and Meier, A. and Gantenbein, G. and Jelonnek, J. and Kasparek, Walter and Lechte, Carsten and Plaum, Burkhard and Goodman, T. and Litvak, A. G. and Denisov, G. G. and Chirkov, A. and Zapevalov, V. and Malygin, V. and Popov, L. G. and Nichiporenko, V. O. and Myasnikov, V. E. and Tai, E. M. and Solyanova, E. A. and Malygin, S. A. and {ASDEX Upgrade Team}}, doi = {10.1007/s10762-015-0187-z}, issn = {{1866-6906} and {1866-6892}}, journal = {Journal of infrared millimeter and terahertz waves}, language = {eng}, number = 1, pages = {45-54}, publisher = {Springer}, research-areas = {Engineering; Optics; Physics}, title = {Status, Operation, and Extension of the ECRH System at ASDEX Upgrade}, unique-id = {ISI:000367198300004}, volume = 37, year = 2016 }
  DOI
  10.1007/s10762-015-0187-z
8. C. Lechte, G. D. Conway, T. Görler, C. Tröster, and the ASDEX Upgrade Team, “Simulation of Doppler Reflectometry in ASDEX Upgrade and Comparison with Experiment,” 2016.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2016eps, author = {Lechte, C. and Conway, G. D. and G{\"o}rler, T. and Tr{\"o}ster, C. and the {ASDEX Upgrade Team}}, note = {EPS 43rd Conference on Plasma Physics}, title = {{Simulation of Doppler Reflectometry in ASDEX Upgrade and Comparison with Experiment}}, year = 2016 }
9. V. R. Venkateswaran, C. Lechte, and T. Hirth, “Investigation of the influence of the plasma temperature on Doppler reflectometry,” 2016.
  - BibTeX
  BibTeX
  @unpublished{VANDANA2016dpg, author = {Venkateswaran, Vandana Revathi and Lechte, Carsten and Hirth, Thomas}, note = {DPG Fr{\"u}hjahrstagung der Sektion Plasmaphysik}, title = {Investigation of the influence of the plasma temperature on {Doppler} reflectometry}, year = 2016 }
2015
1. C. Lechte, G. D. Conway, T. Görler, C. Tröster, and the ASDEX Upgrade Team, “Fullwave Doppler Reflectometry Simulations,” 2015.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2015TALKDEUTSCHRUSS, author = {Lechte, C. and Conway, G. D. and G{\"o}rler, T. and Tr{\"o}ster, C. and the {ASDEX Upgrade Team}}, note = {27th Joint Russian-German Workshop on {ECRH} and Gyrotrons ({STC}-Meeting)}, title = {Fullwave {Doppler} Reflectometry Simulations}, year = 2015 }
2. C. Lechte and G. D. Conway and T. Görler and C. Tröster and the ASDEX Upgrade Team, “Full-Wave Doppler Reflectometry Simulations for ASDEX Upgrade,” 2015.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2015IRW12talk, author = {{C. Lechte and G. D. Conway and T. G{\"o}rler and C. Tr{\"o}ster and the {ASDEX Upgrade Team}}}, note = {The 11th International Reflectometry Workshop ({IRW12})}, title = {{Full-Wave {Doppler} Reflectometry Simulations for ASDEX Upgrade}}, year = 2015 }
3. C. Lechte, G. D. Conway, T. Görler, C. Tröster, and the ASDEX Upgrade Team, “Doppler Reflectometry Simulations for ASDEX Upgrade,” 2015.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2015iaeatalk, author = {Lechte, C. and Conway, G. D. and G{\"o}rler, T. and Tr{\"o}ster, C. and the {ASDEX Upgrade Team}}, note = {$1^${st} {IAEA} Technical Meeting on “Fusion Data Processing, Validation and Analysis”}, title = {{Doppler Reflectometry Simulations for {ASDEX Upgrade}}}, year = 2015 }
4. B. Plaum et al., “Design of a remote steering antenna for ECRH heating in the stellarator Wendelstein 7-X,” in Proceedings of the 28th Symposium On Fusion Technology (SOFT-28), in Fusion engineering and design, vol. A. Elsevier, 2015, pp. 568–572. doi: 10.1016/j.fusengdes.2015.03.026.
  - BibTeX
  - DOI
  BibTeX
  @inproceedings{plaum2015design, address = {New York, NY}, affiliation = {Plaum, B (Reprint Author), Univ Stuttgart, Inst Grenzflachenverfahrenstech & Plasmatechnol I, Pfaffenwaldring 31, D-70569 Stuttgart, Germany. Plaum, B.; Lechte, C.; Kasparek, W.; Gaiser, S.; Zeitler, A., Univ Stuttgart, Inst Grenzflachenverfahrenstech & Plasmatechnol I, D-70569 Stuttgart, Germany. Weissgerber, M., EURATOM IPP, Max Planck Inst Plasmaphys, D-85748 Garching, Germany. Erckmann, V., EURATOM IPP, Max Planck Inst Plasmaphys, D-17491 Greifswald, Germany. Bechtold, A., NTG Neue Technol GmbH & Co KG, D-63571 Gelnhausen, Germany. Busch, M.; Szcepaniak, B., GalvanoT Electroplating Electroforming GmbH, D-51570 Windeck Rosbach, Germany.}, author = {Plaum, Burkhard and Lechte, Carsten and Kasparek, Walter and Gaiser, Sandra and Zeitler, Achim and Erckmann, V. and Weißgerber, M. and Bechtold, A. and Busch, M. and Szcepaniak, B.}, booktitle = {Proceedings of the 28th Symposium On Fusion Technology (SOFT-28)}, doi = {10.1016/j.fusengdes.2015.03.026}, eventdate = {2014-09-29/2014-10-03}, eventtitle = {28th Symposium on Fusion Technology (SOFT)}, language = {eng}, number = {96/97}, pages = {568-572}, publisher = {Elsevier}, research-areas = {Nuclear Science & Technology}, series = {Fusion engineering and design}, title = {Design of a remote steering antenna for ECRH heating in the stellarator Wendelstein 7-X}, unique-id = {ISI:000364255900111}, venue = {San Sebastian, Spain}, volume = {A}, year = 2015 }
  DOI
  10.1016/j.fusengdes.2015.03.026
5. U. Stroth et al., “Experimental turbulence studies for gyro-kinetic code validation using advanced microwave diagnostics,” Nuclear Fusion, vol. 55, Art. no. 8, 2015, [Online]. Available: http://stacks.iop.org/0029-5515/55/i=8/a=083027
  - BibTeX
  - Link
  BibTeX
  @article{STROTH2015iaea, author = {Stroth, U. and Navarro, A. Banon and Conway, G. D. and G{\"o}rler, T. and Happel, T. and Hennequin, P. and Lechte, C. and Manz, P. and Simon, P. and Biancalani, A. and Blanco, E. and Bottereau, C. and Clairet, F. and Coda, S. and Eibert, T. and Estrada, T. and Fasoli, A. and Guimarais, L. and G{\"u}rcan, {\"O}. and Huang, Z. and Jenko, F. and Kasparek, W. and Koenen, C. and Kr{\"a}mer-Flecken, A. and Manso, M. E. and Medvedeva, A. and Molina, D. and Nikolaeva, V. and Plaum, B. and Porte, L. and Prisiazhniuk, D. and Ribeiro, T. and Scott, B. D. and Siart, U. and Storelli, A. and Vermare, L. and Wolf, S.}, journal = {Nuclear Fusion}, number = 8, pages = 083027, title = {Experimental turbulence studies for gyro-kinetic code validation using advanced microwave diagnostics}, url = {http://stacks.iop.org/0029-5515/55/i=8/a=083027}, volume = 55, year = 2015 }
  Link
  http://stacks.iop.org/0029-5515/55/i=8/a=083027
2014
1. C. Lechte, G. D. Conway, T. Görler, C. Tröster, and the ASDEX Upgrade Team, “Doppler Reflectometry Simulations for ASDEX Upgrade,” 2014.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2014EPStalk, author = {Lechte, C. and Conway, G. D. and G{\"o}rler, T. and Tr{\"o}ster, C. and the {ASDEX Upgrade Team}}, note = {{Talk at the 41st EPS Conference on Plasma Physics}}, title = {{Doppler Reflectometry Simulations for ASDEX Upgrade}}, year = 2014 }
2013
1. J. Geiger et al., “Aspects of steady-state operation of the Wendelstein 7-X stellarator,” Plasma Physics and Controlled Fusion, vol. 55, Art. no. 1, 2013, [Online]. Available: http://stacks.iop.org/0741-3335/55/i=1/a=014006
  - BibTeX
  - Link
  BibTeX
  @article{0741-3335-55-1-014006, abstract = {The objective of Wendelstein 7-X is to demonstrate steady-state operation at β -values of up to 5\%, at ion temperatures of several keV and plasma densities of up to 2 × 10 20 m −3 . The second operational phase foresees a fully steady-state high heat flux (HHF) divertor. Preparations are underway to cope with residual bootstrap currents, either by electron cyclotron current drive or by HHF protection elements. The main steady-state heating system is an electron cyclotron resonance heating facility. Various technical improvements of the gyrotrons have been implemented recently. They enable a reliable operation at the 1 MW power level. Some of the technical issues preparing plasma diagnostics for steady-state operation are exemplified. This includes the protection against non-absorbed microwave radiation.}, author = {Geiger, J and Wolf, R C and Beidler, C and Cardella, A and Chlechowitz, E and Erckmann, V and Gantenbein, G and Hathiramani, D and Hirsch, M and Kasparek, W and Kißlinger, J and K{\"o}nig, R and Kornejew, P and Laqua, H P and Lechte, C and Lore, J and Lumsdaine, A and Maaßberg, H and Marushchenko, N B and Michel, G and Otte, M and Peacock, A and Pedersen, T Sunn and Thumm, M and Turkin, Y and Werner, A and Zhang, D and the {W7-X Team}}, journal = {Plasma Physics and Controlled Fusion}, number = 1, pages = 014006, title = {Aspects of steady-state operation of the Wendelstein {7-X} stellarator}, url = {http://stacks.iop.org/0741-3335/55/i=1/a=014006}, volume = 55, year = 2013 }
  Link
  http://stacks.iop.org/0741-3335/55/i=1/a=014006
2. C. Lechte, “ERC3D, a 3-Dimensional Reflectometry Code for EFDA-ITM,” 2013.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2013TALKIRW11ERC3D, author = {Lechte, C.}, note = {The 11th International Reflectometry Workshop (IRW11)}, title = {{ERC3D}, a 3-Dimensional Reflectometry Code for {EFDA-ITM}}, year = 2013 }
3. C. Lechte et al., “Remote-Steering Launchers for the ECRH System on the Stellarator W7-X,” 2013.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2013TALKDEUTSCHRUSS, author = {Lechte, C. and Plaum, B. and Kasparek, W. and Zeitler, A. and Erckmann, V. and Laqua, H. and Weißgerber, M. and Bechtold, A. and Szcepaniak, B. and Busch, M.}, note = {25th Joint Russian-German Workshop on {ECRH} and Gyrotrons ({STC}-Meeting)}, title = {Remote-Steering Launchers for the {ECRH} System on the Stellarator {W7-X}}, year = 2013 }
4. C. Lechte, G. D. Conway, T. Görler, C. Tröster, A. Volk, and the ASDEX Upgrade Team, “Full-Wave Doppler Reflectometry Simulations for ASDEX Upgrade,” in Proceedings of the 11th International Reflectometry Workshop (IRW11), 2013. [Online]. Available: http://www.lptp\allowbreak.polytechnique.fr/\allowbreakNews/11/\allowbreakWorkshop\allowbreak/papers\allowbreak/Lechte\_IRW11-paper.pdf
  - BibTeX
  - Link
  BibTeX
  @inproceedings{LECHTE2013IRW11, author = {Lechte, C. and Conway, G. D. and G{\"o}rler, T. and Tr{\"o}ster, C. and Volk, A. and the {ASDEX Upgrade Team}}, booktitle = {Proceedings of the 11th International Reflectometry Workshop (IRW11)}, title = {{Full-Wave Doppler Reflectometry Simulations for ASDEX Upgrade}}, url = {http://www.lptp\allowbreak{}.polytechnique.fr/\allowbreak{}News/11/\allowbreak{}Workshop\allowbreak{}/papers\allowbreak{}/Lechte\_IRW11-paper.pdf}, year = 2013 }
  Link
  http://www.lptp\allowbreak{}.polytechnique.fr/\allowbreak{}News/11/\allowbreak{}Workshop\allowbreak{}/papers\allowbreak{}/Lechte\_IRW11-paper.pdf
2012
1. B. Plaum, C. Lechte, and W. Kasparek, “Optimization of optical ECRH components with free space mode mixtures,” Dec. 2012.
  - BibTeX
  BibTeX
  @unpublished{PLAUM2012d, author = {Plaum, Burkhard and Lechte, Carsten and Kasparek, Walter}, month = {12}, note = {{US--EU--Japan RF Heating Technology Workshop, Nara, Japan}}, title = {{Optimization of optical ECRH components with free space mode mixtures}}, year = 2012 }
2. C. Lechte, H. Idei, W. Kasparek, B. Plaum, J. Ruiz, and D. Tretiak, “A Five-Port Mitre Bend Coupler System For In-Situ Measurement Of Higher-Order Waveguide Modes,” Dec. 2012.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2012c, author = {Lechte, Carsten and Idei, Hiroshi and Kasparek, Walter and Plaum, Burkhard and Ruiz, Juan and Tretiak, Dina}, month = {12}, note = {{US−EU−Japan RF Heating Technology Workshop, Nara, Japan}}, title = {{A Five-Port Mitre Bend Coupler System For In-Situ Measurement Of Higher-Order Waveguide Modes}}, year = 2012 }
3. C. Lechte, G. Conway, and T. Görler, “Untersuchung der Doppler-Reflektometrie mit Fullwave-Simulationen,” Mar. 2012.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2012a, author = {Lechte, Carsten and Conway, Garrard and G{\"o}rler, Tobias}, month = {03}, note = {{DPG-Fr{\"u}hjahrstagung 2012 in Stuttgart}}, title = {{Untersuchung der Doppler-Reflektometrie mit Fullwave-Simulationen}}, year = 2012 }
4. J. Jelonnek et al., “Progress on 140 GHz, 1 MW, CW Series Gyrotrons for W7-X,” in 37th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2012, September 23--28, Wollongong, Australia, 2012.
  - BibTeX
  BibTeX
  @inproceedings{JELONNEK2012A, address = {Wollongong, Australia}, author = {Jelonnek, J. and Braune, H. and Dammertz, G. and Erckmann, V. and Flamm, J. and Gantenbein, G. and Hollmann, F. and Jonitz, L. and Kasparek, W. and Kern, S. and Laqua, H. P. and Lechte, C. and L{\'e}grand, F. and Leonhardt, W. and Lietaer, G. and Michel, G. and Noke, F. and Purps, F. and Samartsev, A. and Schlaich, A. and Schmid, M. and Thumm, M. and Uhren, P.}, booktitle = {37th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2012, September 23--28}, title = {{Progress on 140 GHz, 1 MW, CW Series Gyrotrons for W7-X}}, year = 2012 }
5. J. Ruiz, W. Kasparek, C. Lechte, B. Plaum, and H. Idei, “Numerical and experimental investigation of a 5-port mitre-bend directional coupler for mode analysis in corrugated waveguides,” Journal of Infrared, Millimeter, and Terahertz Waves, vol. 33, Art. no. 5, 2012, doi: 10.1007/s10762-012-9883-0.
  - BibTeX
  - DOI
  BibTeX
  @article{RUIZ2012, author = {Ruiz, Juan and Kasparek, Walter and Lechte, Carsten and Plaum, Burkhard and Idei, Hiroshi}, doi = {10.1007/s10762-012-9883-0}, issn = {1866-6892}, journal = {Journal of Infrared, Millimeter, and Terahertz Waves}, keyword = {Directional coupler; Corrugated waveguides; Hybrid modes; Mode analysis; Electron cyclotron heating}, language = {English}, link = {http://dx.doi.org/10.1007/s10762-012-9883-0}, number = 5, pages = {491--504}, publisher = {Springer US}, title = {Numerical and experimental investigation of a 5-port mitre-bend directional coupler for mode analysis in corrugated waveguides}, volume = 33, year = 2012 }
  DOI
  10.1007/s10762-012-9883-0
6. D. Wagner et al., “The broadband multi-Megawatt ECRH system at ASDEX Upgrade,” in 37th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2012, September 23--28, Wollongong, Australia, 2012.
  - BibTeX
  BibTeX
  @inproceedings{WAGNER2012A, address = {Wollongong, Australia}, author = {Wagner, D. and Stober, J. and Honecker, F. and Leuterer, F. and Monaco, F. and M{\"u}ller, S. and M{\"u}nich, M. and Reich, M. and Schubert, M. and Sch{\"u}tz, H. and Treutterer, W. and Zohm, H. and Thumm, M. and Scherer, T. and Strauss, D. and Meier, A. and Gantenbein, G. and Jelonnek, J. and Kasparek, W. and Plaum, B. and H{\"o}hnle, H. and Lechte, C. and Litvak, A. G. and Denisov, G. G. and Chirkov, A. and Popov, L. G. and Nichiporenko, V. O. and Myasnikov, V. E. and Tai, E. M. and Solyanova, E. A. and Malygin, S. A.}, booktitle = {37th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2012, September 23--28}, title = {{The broadband multi-Megawatt ECRH system at ASDEX Upgrade}}, year = 2012 }
7. W. Kasparek et al., “Status of Resonant Diplexer Development for high-power ECRH Applications,” EPJ Web of Conferences, vol. 32, p. 4008, 2012, doi: 10.1051/epjconf/20123204008.
  BibTeX
  @article{KASPAREK2012A, author = {Kasparek, W. and Plaum, B. and Lechte, C. and Filipovic, E. and Erckmann, V. and Gr{\"u}nwald, G. and Hollmann, F. and Maraschek, M. and Michel, G. and Monaco, F. and M{\"u}ller, S. and Noke, F. and Purps, F. and Schubert, M and Sch{\"u}tz, H. and Stober, J. and Wagner, D. and van den Braber, R. and Doelman, N. and Fritz, E. and Bongers, W. and Krijger, B. and Petelin, M. and Lubyako, L. and Bruschi, A. and Sakamoto, K. and {teams at the contributing institutes} and {ASDEX Upgrade Team}}, doi = {10.1051/epjconf/20123204008}, journal = {EPJ Web of Conferences}, note = {17th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating, Deurne, 12 - 17 May 2012}, pages = 04008, title = {{Status of Resonant Diplexer Development for high-power ECRH Applications}}, url = {http://dx.doi.org/10.1051/epjconf/20123204008}, volume = 32, year = 2012 }
  Link
  http://dx.doi.org/10.1051/epjconf/20123204008
  DOI
  10.1051/epjconf/20123204008
8. B. Plaum, W. Kasparek, C. Lechte, J. Ruiz, D. Tretiak, and H. Idei, “In-situ characterization of spurious modes in HE$_11$ transmission lines with a 5-port coupler,” EPJ Web of Conferences, vol. 32, p. 4010, 2012, doi: 10.1051/epjconf/20123204010.
  BibTeX
  @article{PLAUM2012B, author = {Plaum, B. and Kasparek, W. and Lechte, C. and Ruiz, J. and Tretiak, D. and Idei, H.}, doi = {10.1051/epjconf/20123204010}, journal = {EPJ Web of Conferences}, note = {17th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating, Deurne, 12 - 17 May 2012}, pages = 04010, title = {{In-situ characterization of spurious modes in HE$_{11}$ transmission lines with a 5-port coupler}}, url = {http://dx.doi.org/10.1051/epjconf/20123204010}, volume = 32, year = 2012 }
  Link
  http://dx.doi.org/10.1051/epjconf/20123204010
  DOI
  10.1051/epjconf/20123204010
9. V. Erckmann et al., “Large Scale CW ECRH Systems: Some considerations,” EPJ Web of Conferences, vol. 32, p. 4006, 2012, doi: 10.1051/epjconf/20123204006.
  BibTeX
  @article{ERCKMANN2012A, author = {Erckmann, V. and Kasparek, W. and Plaum, B. and Lechte, C. and Petelin, M. I. and Braune, H. and Gantenbein, G. and Laqua, H. P. and Lubiako, L. and Marushchenko, N. B. and Michel, G. and Turkin, Y. and Weissgerber, M. and {the W7-X ECRH- teams at IPP Greifswald and IPF Stuttgart and KIT}}, doi = {10.1051/epjconf/20123204006}, journal = {EPJ Web of Conferences}, note = {17th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating, Deurne, 12 - 17 May 2012}, pages = 04006, title = {{Large Scale CW ECRH Systems: Some considerations}}, url = {http://dx.doi.org/10.1051/epjconf/20123204006}, volume = 32, year = 2012 }
  Link
  http://dx.doi.org/10.1051/epjconf/20123204006
  DOI
  10.1051/epjconf/20123204006
10. J. P. Pfannmöller, C. Lechte, O. Grulke, and T. Klinger, “Investigations on loop antenna excited whistler waves in a cylindrical plasma based on laboratory experiments and simulations,” Physics of Plasmas, vol. 19, Art. no. 10, 2012, doi: 10.1063/1.4763558.
  BibTeX
  @article{PFANNMOELLER2012, author = {Pfannm{\"{o}}ller, J. P. and Lechte, C. and Grulke, O. and Klinger, T.}, doi = {10.1063/1.4763558}, eid = {102113}, journal = {Physics of Plasmas}, number = 10, numpages = {8}, pages = 102113, publisher = {AIP}, title = {Investigations on loop antenna excited whistler waves in a cylindrical plasma based on laboratory experiments and simulations}, url = {http://link.aip.org/link/?PHP/19/102113/1}, volume = 19, year = 2012 }
  Link
  http://link.aip.org/link/?PHP/19/102113/1
  DOI
  10.1063/1.4763558
2011
1. C. Lechte, G. Conway, and T. Goerler, “Simulation of Doppler Reflectometry for Density Fluctuation Diagnostics,” Dec. 2011.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2011e, author = {Lechte, C. and Conway, G. and Goerler, T.}, month = {12}, note = {{Séminaire GT ITER, Laboratoire Jacques-Louis Lions, Université Pierre et Marie Curie (Paris 6), Paris, France}}, title = {{Simulation of Doppler Reflectometry for Density Fluctuation Diagnostics}}, year = 2011 }
2. C. Lechte, “Remote Steering Optimisation for W7-X and Reflectometry Simulations in the Presence of Turbulence,” Nov. 2011.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2011c, author = {Lechte, C.}, month = {11}, note = {{Kyushu/Okinawa/Yamaguchi Branch of the Japan Society of Plasma Science and Nuclear Fusion Research Special Seminar at Kyushu University, Fukuoka, Japan}}, title = {{Remote Steering Optimisation for W7-X and Reflectometry Simulations in the Presence of Turbulence}}, year = 2011 }
3. C. Lechte, G. Conway, and T. Goerler, “Doppler Reflectometry Investigations With The Fullwave Code IPF-FD3D,” Nov. 2011.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2011d, author = {Lechte, C. and Conway, G. and Goerler, T.}, month = {11}, note = {{28th JSPF Annual Meeting /The 29th Symposium on Plasma Processing / The Physical Society of Japan, 2011 Autumn Meeting: Plasma Conference 2011 (PLASMA2011)}}, title = {{Doppler Reflectometry Investigations With The Fullwave Code IPF-FD3D}}, year = 2011 }
4. C. Lechte and H. Kumrić, “Simulation of a Plasma-Filled Horn Antenna With Improved Radiation Pattern,” Plasma Science, IEEE Transactions on, vol. 39, Art. no. 11, Jun. 2011, doi: 10.1109/TPS.2011.2156431.
  - BibTeX
  - DOI
  BibTeX
  @article{LECHTE2011, abstract = {The gain increase of a shortened horn antenna filled with a metamaterial structure was confirmed in numerical and experimental investigations reported in recent papers. All described embedded structures are multilayer grids or wires, optimized for one single frequency of operation. This paper presents first numerical studies of a plasma-filled horn. A strong focusing effect was observed.}, author = {Lechte, C. and Kumri{\'c}, H.}, doi = {10.1109/TPS.2011.2156431}, issn = {0093-3813}, journal = {Plasma Science, IEEE Transactions on}, month = {06}, number = 11, pages = {2488--2489}, title = {{Simulation of a Plasma-Filled Horn Antenna With Improved Radiation Pattern}}, volume = 39, year = 2011 }
  DOI
  10.1109/TPS.2011.2156431
5. C. Lechte and G. Conway, “Doppler Reflectometry Investigations With The Fullwave Code IPF-FD3D,” May 2011.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2011b, author = {Lechte, C. and Conway, G.}, month = {05}, note = {{10th International Reflectometry Workshop, Padova, Italy}}, title = {{Doppler Reflectometry Investigations With The Fullwave Code IPF-FD3D}}, year = 2011 }
6. C. Lechte, “Simulation von Doppler-Reflektometrie in turbulenten Plasmen,” Mar. 2011.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2011a, author = {Lechte, C.}, month = {03}, note = {{DPG-Fr{\"u}hjahrstagung 2011 in Kiel}}, title = {{Simulation von Doppler-Reflektometrie in turbulenten Plasmen}}, year = 2011 }
7. G. Gantenbein et al., “140 GHz, 1 MW CW Gyrotron Development for Fusion Applications -- Progress and Recent Results,” Journal of Infrared, Millimeter and Terahertz Waves, vol. 32, Art. no. 3, 2011, doi: 10.1007/s10762-010-9749-2.
  BibTeX
  @article{GANTENBEIN2011, affiliation = {Karlsruhe Institute of Technology, Association EURATOM—KIT, Institute for Pulsed Power and Microwave Technology (IHM) and Institute of High Frequency Techniques and Electronics (IHE), Kaiserstr. 12, 76131 Karlsruhe, Germany}, author = {Gantenbein, Gerd and Erckmann, Volker and Illy, Stefan and Kern, Stefan and Kasparek, Walter and Lechte, Carsten and Leonhardt, Wolfgang and Liévin, Christophe and Samartsev, Andrey and Schlaich, Andreas and Schmid, Martin and Thumm, Manfred}, doi = {10.1007/s10762-010-9749-2}, issn = {1866-6892}, journal = {Journal of Infrared, Millimeter and Terahertz Waves}, keyword = {Journals}, number = 3, pages = {320--328}, publisher = {Springer New York}, title = {{140 GHz, 1 MW CW Gyrotron Development for Fusion Applications -- Progress and Recent Results}}, url = {http://dx.doi.org/10.1007/s10762-010-9749-2}, volume = 32, year = 2011 }
  Link
  http://dx.doi.org/10.1007/s10762-010-9749-2
  DOI
  10.1007/s10762-010-9749-2
8. B. Plaum, E. Holzhauer, and C. Lechte, “Numerical Calculation of Reflection Characteristics of Grooved Surfaces with a 2D FDTD Algorithm,” Journal of Infrared, Millimeter and Terahertz Waves, vol. 32, Art. no. 4, 2011, doi: 10.1007/s10762-011-9778-5.
  BibTeX
  @article{PLAUM2011k, affiliation = {Institut f{\"u}r Plasmaforschung, Universit{\"a}t Stuttgart, Pfaffenwaldring 31, 70569 Stuttgart, Germany}, author = {Plaum, B. and Holzhauer, E. and Lechte, C.}, doi = {10.1007/s10762-011-9778-5}, issn = {1866-6892}, journal = {Journal of Infrared, Millimeter and Terahertz Waves}, note = {10.1007/s10762-011-9778-5}, number = 4, pages = {482--495}, publisher = {Springer New York}, title = {Numerical Calculation of Reflection Characteristics of Grooved Surfaces with a {2D} {FDTD} Algorithm}, url = {http://dx.doi.org/10.1007/s10762-011-9778-5}, volume = 32, year = 2011 }
  Link
  http://dx.doi.org/10.1007/s10762-011-9778-5
  DOI
  10.1007/s10762-011-9778-5
9. V. Erckmann et al., “Large Scale CW ECRH Systems: Meeting a Challenge. Radio Frequency Power in Plasmas,” in Proc. 19th Topical Conference, in AIP Conference Proceedings, vol. 1406. Newport, RI, USA, 2011, p. 165.
  - BibTeX
  BibTeX
  @inproceedings{ERCKMANN2012B, address = {Newport, RI, USA}, author = {Erckmann, V. and Kasparek, W. and Plaum, B. and Lechte, C. and Petelin, M. I. and Bruschi, A. and D'Arcangelo, O. and Bin, W. and Braune, H. and van den Braber, R. and Doelman, N. and Gantenbein, G. and H{\"o}hnle, H. and Laqua, H. P. and Lubiako, L. and Mangold, O. and Marushchenko, N. B. and Michel, G. and Thumm, M. and Turkin, Y. and {the W7-X ECRH- teams at IPP Greifswald, IPF Stuttgart, and KIT}}, booktitle = {Proc. 19th Topical Conference}, pages = 165, series = {AIP Conference Proceedings}, title = {{Large Scale CW ECRH Systems: Meeting a Challenge. Radio Frequency Power in Plasmas}}, volume = 1406, year = 2011 }
10. D. Wagner et al., “Recent Upgrades and Extensions of the ASDEX Upgrade ECRH System,” Journal of Infrared, Millimeter and Terahertz Waves, Special Issue: Gyrotrons, vol. 32, pp. 274–282, 2011, doi: 10.1007/s10762-010-9703-3.
  BibTeX
  @article{WAGNER11x, author = {Wagner, D. and Stober, J. and Leuterer, F. and Monaco, F. and M{\"u}nich, M. and {Schmid-Lorch}, D. and Sch{\"u}tz, H. and Zohm, H. and {ASDEX Upgrade Team} and Thumm, M. and Scherer, T. and Meier, A. and Gantenbein, G. and Flamm, J. and Kasparek, W. and H{\"o}hnle, H. and Lechte, C. and Litvak, A. G. and Denisov, G. G. and Chirkov, A. and Popov, L. G. and Nichiporenko, V. O. and Myasnikov, V. E. and Tai, E. M. and Solyanova, E. A. and Malygin, S. A.}, doi = {10.1007/s10762-010-9703-3}, journal = {Journal of Infrared, Millimeter and Terahertz Waves, Special Issue: Gyrotrons}, pages = {274--282}, title = {{Recent Upgrades and Extensions of the {ASDEX Upgrade} ECRH System}}, url = {http://www.springerlink.com/content/6356157722x50520/}, volume = 32, year = 2011 }
  Link
  http://www.springerlink.com/content/6356157722x50520/
  DOI
  10.1007/s10762-010-9703-3
2010
1. C. Lechte, “Fullwave Simulation of Doppler Reflectometry in The Presence of Turbulence,” May 2010.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2010A, author = {Lechte, Carsten}, month = {05}, note = {International Conference on Plasma Diagnostics, April 12--16, 2010, Pont-{\`a}-Mousson, France}, title = {{Fullwave Simulation of Doppler Reflectometry in The Presence of Turbulence}}, year = 2010 }
2. E. J. Kowalski et al., “Linearly Polarized Modes of a Corrugated Metallic Waveguide,” IEEE Transactions on Microwave Theory and Techniques, vol. 58, Art. no. 11, 2010, doi: 10.1109/TMTT.2010.2078972.
  - BibTeX
  - DOI
  BibTeX
  @article{KOWALSKI2010, author = {Kowalski, Elizabeth J. and Tax, David S. and Shapiro, Michael A. and Sirigiri, Jagadishwar R. and Temkin, Richard J. and Bigelow, Timothy S. and Rasmussen, David A.}, doi = {10.1109/TMTT.2010.2078972}, journal = {IEEE Transactions on Microwave Theory and Techniques}, number = 11, pages = {2772-2780}, title = {Linearly Polarized Modes of a Corrugated Metallic Waveguide}, volume = 58, year = 2010 }
  DOI
  10.1109/TMTT.2010.2078972
2009
1. G. D. Conway et al., “Turbulence measurements using Doppler reflectometry on ASDEX Upgrade,” None, 2009.
  - BibTeX
  BibTeX
  @article{CONWAY09x, asdfurl = {{"}http://www.ipfn.ist.utl.pt/irw9/abstracts/gconway_abstract.pdf{"}}, author = {Conway, G. D. and Troester, C. and Suttrop, W. and Schirmer, J. and Poli, E. and Lechte, C. and Zohm, H. and {ASDEX Upgrade Team}}, journal = {None}, title = {{Turbulence measurements using Doppler reflectometry on {ASDEX Upgrade}}}, year = 2009 }
2. C. Lechte, “Investigation of the Scattering Efficiency in Doppler Reflectometry by Two-Dimensional Full-Wave Simulations,” IEEE Trans. Plasma Sci., vol. 37, Art. no. 6, 2009, doi: 10.1109/TPS.2009.2019651.
  - BibTeX
  - DOI
  BibTeX
  @article{LECHTE2009, author = {Lechte, C.}, doi = {10.1109/TPS.2009.2019651}, journal = {IEEE Trans. Plasma Sci.}, number = 6, title = {{Investigation of the Scattering Efficiency in Doppler Reflectometry by Two-Dimensional Full-Wave Simulations}}, volume = 37, year = 2009 }
  DOI
  10.1109/TPS.2009.2019651
2008
1. C. Lechte, G. Conway, and U. Stroth, “Simulation of Doppler Reflectometry in Turbulent Plasmas,” Jun. 2008.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2008B, author = {Lechte, C. and Conway, G. and Stroth, U.}, month = {06}, note = {{35th IEEE International Conference on Plasma Science}}, title = {{Simulation of Doppler Reflectometry in Turbulent Plasmas}}, year = 2008 }
2. C. Lechte, G. Conway, and U. Stroth, “Winkelabhängigkeit der reflektierten Leistung bei Doppler-Reflektometrie in turbulenten Plasmen,” Mar. 2008.
  - BibTeX
  BibTeX
  @unpublished{LECHTE2008A, author = {Lechte, C. and Conway, G. and Stroth, U.}, month = {03}, note = {{DPG} Fr{\"u}hjahrstagung in Darmstadt}, title = {{Winkelabh{\"a}ngigkeit der reflektierten Leistung bei Doppler-Reflektometrie in turbulenten Plasmen}}, year = 2008 }
3. G. D. Conway et al., “Turbulence and geodesic acoustic mode behavioural studies in ASDEX Upgrade using Doppler Reflectometry,” ??, 2008.
  - BibTeX
  BibTeX
  @article{CONWAY2008, author = {Conway, G. D. and Tr{\"o}ster, C. and Schirmer, J. and Suttrop, W. and Lechte, C. and Holzhauer, E. and Scott, B. and Poli, E. and Zohm, H. and the ASDEX Upgrade Team}, journal = {??}, title = {{Turbulence and geodesic acoustic mode behavioural studies in ASDEX Upgrade using Doppler Reflectometry}}, year = 2008 }
4. V. Erckmann et al., “The 10 MW, cw, ECRH-Plant for W7-X: Status and High Power Performance,” in SMSA2008 Boat Conference, 2008.
  - BibTeX
  BibTeX
  @inproceedings{ERCKMANN_kommt_erst_2009_raus, author = {Erckmann, V. and Brand, P. and Braune, H. and Gantenbein, G. and Kasparek, W. and {Laqua, H. P.} and Lechte, C. and Marushchenko, N. B. and Michel, G. and Thumm, M. and Turkin, Y. and Weissgerber, M. and {the W7-X ECRH- teams at IPP Greifswald, IPF Stuttgart and FZK Karlsruhe}}, booktitle = {SMSA2008 Boat Conference}, title = {The 10 {MW}, cw, {ECRH}-Plant for {W7-X}: Status and High Power Performance}, year = 2008 }
2007
1. C. Lechte, E. Holzhauer, U. Stroth, and G. Conway, “Full Wave Doppler Reflectometry Simulations in 2D,” in Proceedings of the 8th International Reflectometer Workshop in St. Petersburg, Russia, 2007. [Online]. Available: https://www.aug.ipp.mpg.de/IRW/IRW8/papers/0810-IRW08-LechteC\_paper.pdf
  - BibTeX
  - Link
  BibTeX
  @inproceedings{LECHTE2007, author = {Lechte, C. and Holzhauer, E. and Stroth, U. and Conway, G.}, booktitle = {Proceedings of the 8th International Reflectometer Workshop in St. Petersburg, Russia}, optorganization = {8th International Reflectometry Workshop}, optpublisher = {8th International Reflectometry Workshop}, title = {{Full Wave Doppler Reflectometry Simulations in {2D}}}, url = {https://www.aug.ipp.mpg.de/IRW/IRW8/papers/0810-IRW08-LechteC\_paper.pdf}, year = 2007 }
  Link
  https://www.aug.ipp.mpg.de/IRW/IRW8/papers/0810-IRW08-LechteC\_paper.pdf
2006
1. B. Plaum et al., “High-Power Tests of a Remote-Steering Antenna at 140 GHz,” Fusion Science and Technology, vol. 50, Art. no. 1, 2006, doi: 10.13182/FST06-A1216.
  BibTeX
  @article{doi:10.13182/FST06-A1216, abstract = { AbstractThis paper reports the results of the high-power tests of a remote-steering-launcher mock-up at 140 GHz, which were performed at the electron cyclotron resonance heating installation for the future stellarator Wendelstein 7-X (W7-X) at Max-Planck-Institut für Plasmaphysik, Greifswald. The mock-up test system consists of a 6.62-m-long square corrugated waveguide with a steerable optic at the entrance and various diagnostics at the exit of the waveguide. A straight launcher and a version with two integrated miter bends were investigated.The ohmic loss of the waveguide was measured via the temperature increase of the waveguide wall and was used to calibrate the calculated angular dependence of the total ohmic losses of the waveguide. Short-pulse radiation pattern measurements with thermographic recording show high beam quality and confirm the steering range of -12…12 deg. The version with two miter bends produces similar results but with an increased level of side lobes.Although the tests were performed under atmospheric pressure, no arcing was observed in the straight waveguide. In the version with the miter bends, however, arcing limited the power and pulse length. }, author = {Plaum, B. and Gantenbein, G. and Kasparek, W. and Schwörer, K. and Grünert, M. and Braune, H. and Erckmann, V. and Hollmann, F. and Jonitz, L. and Laqua, H. and Michel, G. and Noke, F. and Purps, F. and Bruschi, A. and Cirant, S. and Gandini, F. and Verhoeven, A. G. A. and Groups, ECRH}, doi = {10.13182/FST06-A1216}, eprint = {https://doi.org/10.13182/FST06-A1216}, journal = {Fusion Science and Technology}, number = 1, pages = {1-14}, publisher = {Taylor & Francis}, title = {High-Power Tests of a Remote-Steering Antenna at 140 GHz}, url = {https://doi.org/10.13182/FST06-A1216 }, volume = 50, year = 2006 }
  Link
  https://doi.org/10.13182/FST06-A1216
  DOI
  10.13182/FST06-A1216

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