Measurements using tangentially viewing bolometers on TFTR

C. E. Bush, J. Schivell, R. Budny, R. A. Ellis, Robert James Goldston, D. McCune, S. S. Medley, S. D. Scott, H. H. Towner, R. M. Wieland

Research output: Contribution to journalArticle

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Abstract

Co- and counter-viewing bolometers aimed along a common tangency chord are being used to study power losses due to charge exchange (CX) of fast ions in neutral beam injection (NBI) heated TFTR plasmas. For unidirectional injection, tangential bolometers oriented to view CX loss of circulating fast ions detect losses from the thermal target plasma (impurity radiation and CX) plus power due to the fast ion CX loss, whereas bolometers oppositely directed measure only the target plasma contribution. The difference between the two signals is a measure of the fast ion CX loss. Additional information is obtained by comparing the tangential bolometer signals with those of perpendicularly viewing bolometer monitors and arrays. The measurements are compared to results of the TRANSP code analysis.

Original languageEnglish (US)
Pages (from-to)1869-1871
Number of pages3
JournalReview of Scientific Instruments
Volume59
Issue number8
DOIs
StatePublished - Dec 1 1988

All Science Journal Classification (ASJC) codes

  • Instrumentation

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    Bush, C. E., Schivell, J., Budny, R., Ellis, R. A., Goldston, R. J., McCune, D., Medley, S. S., Scott, S. D., Towner, H. H., & Wieland, R. M. (1988). Measurements using tangentially viewing bolometers on TFTR. Review of Scientific Instruments, 59(8), 1869-1871. https://doi.org/10.1063/1.1140091