Radio frequency-driven energetic tritium ion tail measurements in the Tokamak Fusion Test Reactor using the pellet charge exchange diagnostic

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1148060· OSTI ID:451734

Duong, H H ^[1]; Fisher, R K; McChesney, J M; Parks, P B ^[2]; Medley, S S; Mansfield, D K; Roquemore, A L ^[3]; Petrov, M P ^[4]

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1. General Atomics ORAU Fellow, San Diego, California 92186 (United States)
2. General Atomics, San Diego, California 92186 (United States)
3. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)
4. A. F. Ioffe Physical-Technical Institute, St. Petersburg, 194021 (Russia)

Charge exchange interactions of ions with the ablation cloud of an injected low-Z impurity pellet can be used to measure the energy spectrum and radial profile of confined fast ions in a fusion plasma. On the Tokamak Fusion Test Reactor we use this technique to directly measure energetic alphas from D{endash}T reactions, tritons from D{endash}D reactions, and radio frequency (rf)-driven minority tail ions (e.g., H, {sup 3}He, T). We describe the status of the pellet charge exchange (PCX) diagnostic including a brief description of the measurement technique and discussion of operational experience. PCX measurements of the energy spectrum, radial density distribution, and heating deposition profile of rf-driven tritium ions during 2{Omega}{sub T} heating of L-mode plasmas are presented. {copyright} {ital 1997 American Institute of Physics.}

• Research Organization: Princeton Plasma Physics Laboratory
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 451734
• Report Number(s): CONF-960543--
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 1 Vol. 68; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CHARGE EXCHANGE
ENERGY SPECTRA
ICR HEATING
ION TEMPERATURE
PELLET INJECTION
PLASMA DENSITY
PLASMA DIAGNOSTICS
PLASMA IMPURITIES
PLASMA RADIAL PROFILES
TFTR TOKAMAK
TOKAMAK DEVICES
TRITIUM
TRITIUM IONS