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Density profile sensitivity study of ASDEX Upgrade ICRF Antennas with the TOPICA code

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Abstract
During operation of the ASDEX Upgrade (AUG) ion cyclotron radio frequency (ICRF) system, Tungsten (W)-coated poloidal limiters and structures connected along magnetic field lines to the antenna can be sources of W, which is attributed to sputtering by ions accelerated in radio frequency (RF) sheaths. In order to analyze and optimize the ICRF antenna performance, accurate and efficient simulation tools are necessary. TOPICA code was developed for analysis of ICRF antenna systems with plasma loading conditions modeled with 1D FELICE code. This paper presents an initial comparative analysis of two AUG ICRF antennas for a set of model plasma density profiles (with varying density gradient and antenna cut-off distance). The antennas are presently installed in AUG and differ in that one was partially optimized using HFSS code to reduce E-// near fields. Power transferred to plasma and sheath driving RF potentials are computed.
Keywords
ASDEX Upgrade, ICRF, Rectified potential, HFSS, TOPICA

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MLA
Krivska, A., et al. “Density Profile Sensitivity Study of ASDEX Upgrade ICRF Antennas with the TOPICA Code.” AIP Conference Proceedings, edited by CK Phillips and JR Wilson, vol. 1406, American Institute of Physics (AIP), 2011.
APA
Krivska, A., Ceccuzzi, S., Milanesio, D., Bobkov, V., Braun, F., Maggiora, R., … Tuccillo, A. (2011). Density profile sensitivity study of ASDEX Upgrade ICRF Antennas with the TOPICA code. In C. Phillips & J. Wilson (Eds.), AIP Conference Proceedings (Vol. 1406). Melville, NY, USA: American Institute of Physics (AIP).
Chicago author-date
Krivska, A, S Ceccuzzi, D Milanesio, V Bobkov, F Braun, R Maggiora, Jean-Marie Noterdaeme, and AA Tuccillo. 2011. “Density Profile Sensitivity Study of ASDEX Upgrade ICRF Antennas with the TOPICA Code.” In AIP Conference Proceedings, edited by CK Phillips and JR Wilson. Vol. 1406. Melville, NY, USA: American Institute of Physics (AIP).
Chicago author-date (all authors)
Krivska, A, S Ceccuzzi, D Milanesio, V Bobkov, F Braun, R Maggiora, Jean-Marie Noterdaeme, and AA Tuccillo. 2011. “Density Profile Sensitivity Study of ASDEX Upgrade ICRF Antennas with the TOPICA Code.” In AIP Conference Proceedings, ed by. CK Phillips and JR Wilson. Vol. 1406. Melville, NY, USA: American Institute of Physics (AIP).
Vancouver
1.
Krivska A, Ceccuzzi S, Milanesio D, Bobkov V, Braun F, Maggiora R, et al. Density profile sensitivity study of ASDEX Upgrade ICRF Antennas with the TOPICA code. In: Phillips C, Wilson J, editors. AIP Conference Proceedings. Melville, NY, USA: American Institute of Physics (AIP); 2011.
IEEE
[1]
A. Krivska et al., “Density profile sensitivity study of ASDEX Upgrade ICRF Antennas with the TOPICA code,” in AIP Conference Proceedings, Newport, RI, USA, 2011, vol. 1406.
@inproceedings{2947782,
  abstract     = {During operation of the ASDEX Upgrade (AUG) ion cyclotron radio frequency (ICRF) system, Tungsten (W)-coated poloidal limiters and structures connected along magnetic field lines to the antenna can be sources of W, which is attributed to sputtering by ions accelerated in radio frequency (RF) sheaths. In order to analyze and optimize the ICRF antenna performance, accurate and efficient simulation tools are necessary. TOPICA code was developed for analysis of ICRF antenna systems with plasma loading conditions modeled with 1D FELICE code. This paper presents an initial comparative analysis of two AUG ICRF antennas for a set of model plasma density profiles (with varying density gradient and antenna cut-off distance). The antennas are presently installed in AUG and differ in that one was partially optimized using HFSS code to reduce E-// near fields. Power transferred to plasma and sheath driving RF potentials are computed.},
  author       = {Krivska, A and Ceccuzzi, S and Milanesio, D and Bobkov, V and Braun, F and Maggiora, R and Noterdaeme, Jean-Marie and Tuccillo, AA},
  booktitle    = {AIP Conference Proceedings},
  editor       = {Phillips, CK and Wilson, JR},
  isbn         = {9780735409781},
  issn         = {0094-243X},
  keywords     = {ASDEX Upgrade,ICRF,Rectified potential,HFSS,TOPICA},
  language     = {eng},
  location     = {Newport, RI, USA},
  publisher    = {American Institute of Physics (AIP)},
  title        = {Density profile sensitivity study of ASDEX Upgrade ICRF Antennas with the TOPICA code},
  url          = {http://dx.doi.org/10.1063/1.3664936},
  volume       = {1406},
  year         = {2011},
}

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