Fast ion loss diagnostic plans for NSTX

Technical Report · Tue Jun 13 00:00:00 EDT 2000

DOI:https://doi.org/10.2172/757064· OSTI ID:757064

Darrow, D S; Bell, R; Johnson, D W; Kugel, H; Wilson, J R; Cecil, F E; Maingi, R; Krasilnikov, A; Alekseyev, A

The prompt loss of neutral beam ions from the National Spherical Torus Experiment (NSTX) is expected to be between 12% and 42% of the total 5 MW of beam power. There may, in addition, be losses of fast ions arising from high harmonic fast wave (HHFW) heating. Most of the lost ions will strike the HHFW antenna or the neutral beam dump. To measure these losses in the 2000 experimental campaign, thermocouples in the antenna, several infrared camera views, and a Faraday cup lost ion probe will be employed. The probe will measure loss of fast ions with E > 1 keV at three radial locations, giving the scrape-off length of the fast ions.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 757064
• Report Number(s): PPPL-3452; TRN: US0003702
• Resource Relation: Other Information: PBD: 13 Jun 2000
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PARTICLE LOSSES
NSTX DEVICE
PLASMA DIAGNOSTICS
IONS
THERMOCOUPLES
CAMERAS
ION PROBES