TFTR diagnostic neutral beam

Journal Article · Fri Aug 01 04:00:00 EDT 1986 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1138738· OSTI ID:5642160

Schilling, G; Kozub, T A; Medley, S S; Young, K M

A neutral beam has been designed and fabricated to aid in the measurement of ion temperatures of hot, dense tokamak fusion test reactor (TFTR) plasmas. The injected fast neutral atoms offer a twofold benefit: (1) Penetration to the plasma center considerably increases charge exchange neutralization of thermal plasma ions, leading to a localized enhancement of the thermal neutrals efflux into charge exchange neutral analyzers; and (2) charge exchange recombination of fully stripped intrinsic impurity ions, C or O, with fast neutrals allows Doppler broadening and shift measurements of the emitted light to determine both the impurity ion temperature and toroidal rotation with unbalanced beam heating. The design and construction of the beam and those features of the beam unique to its function as a diagnostic tool for TFTR will be presented.

• Research Organization: Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08544
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 5642160
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 57:8; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
ATOMIC BEAMS
BEAMS
CHARGE EXCHANGE
IMPURITIES
INCIDENCE ANGLE
ION TEMPERATURE
MEASURING INSTRUMENTS
MODULATION
OPTICAL SPECTROMETERS
PLASMA DIAGNOSTICS
SIGNAL-TO-NOISE RATIO
SPECTROMETERS
TFTR TOKAMAK
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS