Investigations of Low and Moderate Harmonic Fast Wave Physics on CDX-U

Spaleta, J. ; Majeski, R. ; Phillips, C.K. ; Dumont, R.J. ; Kaita, R. ; Soukhanovskii, V. ; Zakharov, L.

Princeton University. Plasma Physics Laboratory.

关键词: 08 Hydrogen;    70 Plasma Physics And Fusion Technology;    43 Particle Accelerators;    Cyclotrons;    Heating;   

DOI  :  10.2172/814708
RP-ID  :  PPPL-3840
RP-ID  :  AC02-76CH03073
RP-ID  :  814708

美国|英语

来源: UNT Digital Library

【 摘 要 】

Third harmonic hydrogen cyclotron fast wave heating studies are planned in the near term on CDX-U to investigate the potential for bulk ion heating. In preparation for these studies, the available radio-frequency power in CDX-U has been increased to 0.5 MW. The operating frequency of the CDX-U radio-frequency transmitter was lowered to operate in the range of 8-10 MHz, providing access to the ion harmonic range 2* {approx} 4* in hydrogen. A similar regime is accessible for the 30 MHz radio-frequency system on the National Spherical Torus Experiment (NSTX), at 0.6 Tesla in hydrogen. Preliminary computational studies over the plasma regimes of interest for NSTX and CDX-U indicate the possibility of strong localized absorption on bulk ion species.