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Ion cyclotron wall conditioning experiments on Tore Supra in presence of the toroidal magnetic field

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Abstract
Wall conditioning techniques applicable in the presence of the high toroidal magnetic field will be required for the operation of ITER for tritium removal, isotopic ratio control and recovery to normal operation after disruptions. Recently ion cyclotron wall conditioning (ICWC) experiments have been carried out on Tore Supra in order to assess the efficiency of this technique in ITER relevant conditions. The ICRF discharges were operated in He/H-2 Mixtures at the Tore Supra nominal field (3.8 T) and a RF frequency of 48 MHz, i.e. within the ITER operational space. RF pulses of 60 s (max.) were applied using a standard Tore Supra two-strap resonant double loop antenna in ICWC mode, operated either in pi or 0-phasing with a noticeable improvement of the RF coupling in the latter case. In order to assess the efficiency of the technique for the control of isotopic ratio the wall was first preloaded using a D-2 glow discharge. After 15 minutes of ICWC in He/H-2 gas mixtures the isotopic ratio was altered from 4% to 50% at the price of an important H implantation into the walls. An overall analysis comparing plasma production and the conditioning efficiency as a function of discharge parameters is given.
Keywords
ICRF discharge, Wall conditioning, Particle balance

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MLA
Wauters, Tom, et al. “Ion Cyclotron Wall Conditioning Experiments on Tore Supra in Presence of the Toroidal Magnetic Field.” AIP Conference Proceedings, edited by V Bobkov and Jean-Marie Noterdaeme, vol. 1187, American Institute of Physics (AIP), 2009, pp. 173–76, doi:10.1063/1.3273721.
APA
Wauters, T., Douai, D., Brémond, S., de la Cal, E., Lombard, G., Lyssoivan, A., … Van Oost, G. (2009). Ion cyclotron wall conditioning experiments on Tore Supra in presence of the toroidal magnetic field. In V. Bobkov & J.-M. Noterdaeme (Eds.), AIP Conference Proceedings (Vol. 1187, pp. 173–176). https://doi.org/10.1063/1.3273721
Chicago author-date
Wauters, Tom, D Douai, S Brémond, E de la Cal, G Lombard, A Lyssoivan, B Pegourié, E Tsitrone, M Van Schoor, and Guido Van Oost. 2009. “Ion Cyclotron Wall Conditioning Experiments on Tore Supra in Presence of the Toroidal Magnetic Field.” In AIP Conference Proceedings, edited by V Bobkov and Jean-Marie Noterdaeme, 1187:173–76. Melville, NY, USA: American Institute of Physics (AIP). https://doi.org/10.1063/1.3273721.
Chicago author-date (all authors)
Wauters, Tom, D Douai, S Brémond, E de la Cal, G Lombard, A Lyssoivan, B Pegourié, E Tsitrone, M Van Schoor, and Guido Van Oost. 2009. “Ion Cyclotron Wall Conditioning Experiments on Tore Supra in Presence of the Toroidal Magnetic Field.” In AIP Conference Proceedings, ed by. V Bobkov and Jean-Marie Noterdaeme, 1187:173–176. Melville, NY, USA: American Institute of Physics (AIP). doi:10.1063/1.3273721.
Vancouver
1.
Wauters T, Douai D, Brémond S, de la Cal E, Lombard G, Lyssoivan A, et al. Ion cyclotron wall conditioning experiments on Tore Supra in presence of the toroidal magnetic field. In: Bobkov V, Noterdaeme J-M, editors. AIP Conference Proceedings. Melville, NY, USA: American Institute of Physics (AIP); 2009. p. 173–6.
IEEE
[1]
T. Wauters et al., “Ion cyclotron wall conditioning experiments on Tore Supra in presence of the toroidal magnetic field,” in AIP Conference Proceedings, Ghent, Belgium, 2009, vol. 1187, pp. 173–176.
@inproceedings{1262954,
  abstract     = {{Wall conditioning techniques applicable in the presence of the high toroidal magnetic field will be required for the operation of ITER for tritium removal, isotopic ratio control and recovery to normal operation after disruptions. Recently ion cyclotron wall conditioning (ICWC) experiments have been carried out on Tore Supra in order to assess the efficiency of this technique in ITER relevant conditions. The ICRF discharges were operated in He/H-2 Mixtures at the Tore Supra nominal field (3.8 T) and a RF frequency of 48 MHz, i.e. within the ITER operational space. RF pulses of 60 s (max.) were applied using a standard Tore Supra two-strap resonant double loop antenna in ICWC mode, operated either in pi or 0-phasing with a noticeable improvement of the RF coupling in the latter case. In order to assess the efficiency of the technique for the control of isotopic ratio the wall was first preloaded using a D-2 glow discharge. After 15 minutes of ICWC in He/H-2 gas mixtures the isotopic ratio was altered from 4% to 50% at the price of an important H implantation into the walls. An overall analysis comparing plasma production and the conditioning efficiency as a function of discharge parameters is given.}},
  author       = {{Wauters, Tom and Douai, D and Brémond, S and de la Cal, E and Lombard, G and Lyssoivan, A and Pegourié, B and Tsitrone, E and Van Schoor, M and Van Oost, Guido}},
  booktitle    = {{AIP Conference Proceedings}},
  editor       = {{Bobkov, V and Noterdaeme, Jean-Marie}},
  isbn         = {{9780735407534}},
  issn         = {{0094-243X}},
  keywords     = {{ICRF discharge,Wall conditioning,Particle balance}},
  language     = {{eng}},
  location     = {{Ghent, Belgium}},
  pages        = {{173--176}},
  publisher    = {{American Institute of Physics (AIP)}},
  title        = {{Ion cyclotron wall conditioning experiments on Tore Supra in presence of the toroidal magnetic field}},
  url          = {{http://doi.org/10.1063/1.3273721}},
  volume       = {{1187}},
  year         = {{2009}},
}

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