Intense diagnostic neutral beam development for ITER

Conference · Wed Jan 01 00:00:00 EST 1992

DOI:https://doi.org/10.1063/1.1143554· OSTI ID:5442762

Rej, D J; Henins, I ^[1]; Fonck, R J; Kim, Y J ^[2]

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1. Oak Ridge National Lab., TN (United States)
2. Wisconsin Univ., Madison, WI (United States). Dept. of Nuclear Engineering and Engineering Physics

For the next-generation, burning tokamak plasmas such as ITER, diagnostic neutral beams and beam spectroscopy will continue to be used to determine a variety of plasma parameters such as ion temperature, rotation, fluctuations, impurity content, current density profile, and confined alpha particle density and energy distribution. Present-day low-current, long-pulse beam technology will be unable to provide the required signal intensities because of higher beam attenuation and background bremsstrahlung radiation in these larger, higher-density plasmas. To address this problem, we are developing a short-pulse, intense diagnostic neutral beam. Protons or deuterons are accelerated using magnetic-insulated ion-diode technology, and neutralized in a transient gas cell. A prototype 25-kA, 100-kV, 1-{mu}s accelerator is under construction at Los Alamos. Initial experiments will focus on ITER-related issues of beam energy distribution, current density, pulse length, divergence, propagation, impurity content, reproducibility, and maintenance.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5442762
• Report Number(s): LA-UR-92-826; CONF-920362-16; ON: DE92011262
• Resource Relation: Journal Volume: 63; Journal Issue: 10; Conference: 9. topical conference on high-temperature plasma diagnostics, Santa Fe, NM (United States), 15-19 Mar 1992
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ITER TOKAMAK
PLASMA DIAGNOSTICS
NEUTRAL ATOM BEAM INJECTION
ALPHA PARTICLES
BREMSSTRAHLUNG
CURRENT DENSITY
ION SOURCES
SPECTROSCOPY
BEAM INJECTION
CHARGED PARTICLES
CLOSED PLASMA DEVICES
ELECTROMAGNETIC RADIATION
RADIATIONS
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
700320* - Plasma Diagnostic Techniques & Instrumentation- (1992-)