Utilization of collinear ECE detection/ECRH heating for active stabilization of plasma instabilities

W.A. Bongers; W. Kasparek; A.J.H. Donné; A.P.H. Goede; M.R. Baar, de; F.C. Schüller; V. Erckmann; J. Stober; E. Westerhof; F.J. Amerongen; B.A. Hennen; P.W.J.M. Nuij; J.W. Oosterbeek; D.M.S. Ronden; D.J. Thoen; T. Tongerlo; D. Wagner

Utilization of collinear ECE detection/ECRH heating for active stabilization of plasma instabilities

W.A. Bongers, W. Kasparek, A.J.H. Donné, A.P.H. Goede, M.R. Baar, de, F.C. Schüller, V. Erckmann, J. Stober, E. Westerhof, F.J. Amerongen, B.A. Hennen, P.W.J.M. Nuij, J.W. Oosterbeek, D.M.S. Ronden, D.J. Thoen, T. Tongerlo, D. Wagner

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

Experiments on TEXTOR have successfully demonstrated the proof of principle [1] of using Electron Cyclotron Emission (ECE) measured along the Electron Cyclotron Resonance Heating (ECRH) line-of-sight [2] for the control of magnetohydrodynamic (MHD) modes. This work, which was done with a quasi-optical system, motivates the further development and implementation of a similar, but in-waveguide system for detection and control of Neoclassical Tearing Mode (NTM) in larger fusion machines. Progress on the implementation of such a system on ASDEX-Upgrade [3], based on waveguides equipped with a Fast Directional Switch (FADIS), is presented. Since FADIS, will be installed at ASDEX, to switch the gyrotron power between different launchers [4], FADIS can also be employed as a frequency filter serving the purpose of separating a low-power ECE signal from the high power ECRH radiation as required in the co-aligned ECE-ECRH setup [5]. Because additional absorptive filtering is required after the FADIS ECE output in [5] and [6] a non resonant two-beam Mach-Zehnder-type interferometer was chosen. This system has been built and partially tested.

Original language	English
Title of host publication	IRMMW-THz 2010 - 35th International Conference on Infrared, Millimeter, and Terahertz Waves, Conference Guide
Pages	5612937-1/4
Publication status	Published - 2010

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Bongers, W. A., Kasparek, W., Donné, A. J. H., Goede, A. P. H., Baar, de, M. R., Schüller, F. C., Erckmann, V., Stober, J., Westerhof, E., Amerongen, F. J., Hennen, B. A., Nuij, P. W. J. M., Oosterbeek, J. W., Ronden, D. M. S., Thoen, D. J., Tongerlo, T., & Wagner, D. (2010). Utilization of collinear ECE detection/ECRH heating for active stabilization of plasma instabilities. In IRMMW-THz 2010 - 35th International Conference on Infrared, Millimeter, and Terahertz Waves, Conference Guide (pp. 5612937-1/4)

@inproceedings{8b7d62b9c87f41fd921a9a312eb17b42,

title = "Utilization of collinear ECE detection/ECRH heating for active stabilization of plasma instabilities",

abstract = "Experiments on TEXTOR have successfully demonstrated the proof of principle [1] of using Electron Cyclotron Emission (ECE) measured along the Electron Cyclotron Resonance Heating (ECRH) line-of-sight [2] for the control of magnetohydrodynamic (MHD) modes. This work, which was done with a quasi-optical system, motivates the further development and implementation of a similar, but in-waveguide system for detection and control of Neoclassical Tearing Mode (NTM) in larger fusion machines. Progress on the implementation of such a system on ASDEX-Upgrade [3], based on waveguides equipped with a Fast Directional Switch (FADIS), is presented. Since FADIS, will be installed at ASDEX, to switch the gyrotron power between different launchers [4], FADIS can also be employed as a frequency filter serving the purpose of separating a low-power ECE signal from the high power ECRH radiation as required in the co-aligned ECE-ECRH setup [5]. Because additional absorptive filtering is required after the FADIS ECE output in [5] and [6] a non resonant two-beam Mach-Zehnder-type interferometer was chosen. This system has been built and partially tested.",

author = "W.A. Bongers and W. Kasparek and A.J.H. Donn{\'e} and A.P.H. Goede and {Baar, de}, M.R. and F.C. Sch{\"u}ller and V. Erckmann and J. Stober and E. Westerhof and F.J. Amerongen and B.A. Hennen and P.W.J.M. Nuij and J.W. Oosterbeek and D.M.S. Ronden and D.J. Thoen and T. Tongerlo and D. Wagner",

year = "2010",

language = "English",

isbn = "978-1-4244-6655-9",

pages = "5612937--1/4",

booktitle = "IRMMW-THz 2010 - 35th International Conference on Infrared, Millimeter, and Terahertz Waves, Conference Guide",

}

Bongers, WA, Kasparek, W, Donné, AJH, Goede, APH, Baar, de, MR, Schüller, FC, Erckmann, V, Stober, J, Westerhof, E, Amerongen, FJ, Hennen, BA, Nuij, PWJM, Oosterbeek, JW, Ronden, DMS, Thoen, DJ, Tongerlo, T & Wagner, D 2010, Utilization of collinear ECE detection/ECRH heating for active stabilization of plasma instabilities. in IRMMW-THz 2010 - 35th International Conference on Infrared, Millimeter, and Terahertz Waves, Conference Guide. pp. 5612937-1/4.

Utilization of collinear ECE detection/ECRH heating for active stabilization of plasma instabilities. / Bongers, W.A.; Kasparek, W.; Donné, A.J.H. et al.
IRMMW-THz 2010 - 35th International Conference on Infrared, Millimeter, and Terahertz Waves, Conference Guide. 2010. p. 5612937-1/4.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Utilization of collinear ECE detection/ECRH heating for active stabilization of plasma instabilities

AU - Bongers, W.A.

AU - Kasparek, W.

AU - Donné, A.J.H.

AU - Goede, A.P.H.

AU - Baar, de, M.R.

AU - Schüller, F.C.

AU - Erckmann, V.

AU - Stober, J.

AU - Westerhof, E.

AU - Amerongen, F.J.

AU - Hennen, B.A.

AU - Nuij, P.W.J.M.

AU - Oosterbeek, J.W.

AU - Ronden, D.M.S.

AU - Thoen, D.J.

AU - Tongerlo, T.

AU - Wagner, D.

PY - 2010

Y1 - 2010

N2 - Experiments on TEXTOR have successfully demonstrated the proof of principle [1] of using Electron Cyclotron Emission (ECE) measured along the Electron Cyclotron Resonance Heating (ECRH) line-of-sight [2] for the control of magnetohydrodynamic (MHD) modes. This work, which was done with a quasi-optical system, motivates the further development and implementation of a similar, but in-waveguide system for detection and control of Neoclassical Tearing Mode (NTM) in larger fusion machines. Progress on the implementation of such a system on ASDEX-Upgrade [3], based on waveguides equipped with a Fast Directional Switch (FADIS), is presented. Since FADIS, will be installed at ASDEX, to switch the gyrotron power between different launchers [4], FADIS can also be employed as a frequency filter serving the purpose of separating a low-power ECE signal from the high power ECRH radiation as required in the co-aligned ECE-ECRH setup [5]. Because additional absorptive filtering is required after the FADIS ECE output in [5] and [6] a non resonant two-beam Mach-Zehnder-type interferometer was chosen. This system has been built and partially tested.

AB - Experiments on TEXTOR have successfully demonstrated the proof of principle [1] of using Electron Cyclotron Emission (ECE) measured along the Electron Cyclotron Resonance Heating (ECRH) line-of-sight [2] for the control of magnetohydrodynamic (MHD) modes. This work, which was done with a quasi-optical system, motivates the further development and implementation of a similar, but in-waveguide system for detection and control of Neoclassical Tearing Mode (NTM) in larger fusion machines. Progress on the implementation of such a system on ASDEX-Upgrade [3], based on waveguides equipped with a Fast Directional Switch (FADIS), is presented. Since FADIS, will be installed at ASDEX, to switch the gyrotron power between different launchers [4], FADIS can also be employed as a frequency filter serving the purpose of separating a low-power ECE signal from the high power ECRH radiation as required in the co-aligned ECE-ECRH setup [5]. Because additional absorptive filtering is required after the FADIS ECE output in [5] and [6] a non resonant two-beam Mach-Zehnder-type interferometer was chosen. This system has been built and partially tested.

M3 - Conference contribution

SN - 978-1-4244-6655-9

SP - 5612937-1/4

BT - IRMMW-THz 2010 - 35th International Conference on Infrared, Millimeter, and Terahertz Waves, Conference Guide

ER -

Utilization of collinear ECE detection/ECRH heating for active stabilization of plasma instabilities

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