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. De Baar; F. C. Schüller; V. Erckmann; F. J. Amerongen; D. J. Thoen; null More Authors

doi:10.1109/ICIMW.2010.5612937

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. De Baar, F. C. Schüller, V. Erckmann, F. J. Amerongen, D. J. Thoen, More Authors

Tera-Hertz Sensing

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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
Subtitle of host publication	35th International Conference on Infrared, Millimeter, and Terahertz Waves conference guide
Publisher	IEEE
Pages	1-4
Number of pages	4
ISBN (Electronic)	978-1-4244-6657-3
ISBN (Print)	978-1-4244-6655-9
DOIs	https://doi.org/10.1109/ICIMW.2010.5612937
Publication status	Published - 30 Nov 2010
Event	35th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2010 - Rome, Italy Duration: 5 Sept 2010 → 10 Sept 2010

Conference

Conference	35th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2010
Country/Territory	Italy
City	Rome
Period	5/09/10 → 10/09/10

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10.1109/ICIMW.2010.5612937

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Bongers, W. A., Kasparek, W., Donné, A. J. H., Goede, A. P. H., De Baar, M. R., Schüller, F. C., Erckmann, V., Amerongen, F. J., Thoen, D. J., & More Authors (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. 1-4). Article 5612937 IEEE. https://doi.org/10.1109/ICIMW.2010.5612937

@inproceedings{2b5cef147314424baf173a23b695b2a4,

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 = "Bongers, {W. A.} and W. Kasparek and Donn{\'e}, {A. J.H.} and Goede, {A. P.H.} and {De Baar}, {M. R.} and Sch{\"u}ller, {F. C.} and V. Erckmann and Amerongen, {F. J.} and Thoen, {D. J.} and {More Authors}",

year = "2010",

month = nov,

day = "30",

doi = "10.1109/ICIMW.2010.5612937",

language = "English",

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

pages = "1--4",

booktitle = "IRMMW-THz 2010",

publisher = "IEEE",

address = "United States",

note = "35th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2010 ; Conference date: 05-09-2010 Through 10-09-2010",

}

Bongers, WA, Kasparek, W, Donné, AJH, Goede, APH, De Baar, MR, Schüller, FC, Erckmann, V, Amerongen, FJ, Thoen, DJ & More Authors 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., 5612937, IEEE, pp. 1-4, 35th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2010, Rome, Italy, 5/09/10. https://doi.org/10.1109/ICIMW.2010.5612937

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. IEEE, 2010. p. 1-4 5612937.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › 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 - De Baar, M. R.

AU - Schüller, F. C.

AU - Erckmann, V.

AU - Amerongen, F. J.

AU - Thoen, D. J.

AU - More Authors, null

PY - 2010/11/30

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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.

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DO - 10.1109/ICIMW.2010.5612937

M3 - Conference contribution

SN - 978-1-4244-6655-9

SP - 1

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BT - IRMMW-THz 2010

PB - IEEE

T2 - 35th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2010

Y2 - 5 September 2010 through 10 September 2010

ER -

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

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