Advances in the CO{sub 2} laser collective Thomson scattering fast ion/alpha particle diagnostic (abstract)

Journal Article · Mon Jan 01 04:00:00 EST 2001 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1326016· OSTI ID:40204785

Richards, R K; Hutchinson, D P

A collective Thomson scattering diagnostic is being developed for the measurement of confined fast ions in hot, dense plasmas. This includes such measurements as the ion tail in JT-60U and the alphas produced in a burning reactor or the upgraded Joint European Torus device. The diagnostic also has the capability of measuring the isotopic ratio of the core ions such as the D/T ratio (required in optimizing a burning plasma experiment). The advances under development for this diagnostic include improvements in the high power source laser, increased bandwidth and reduced noise in the receiver, and the development of an intermediate frequency electronic filter bank. Such improvements are designed to permit the temporal measurement of the fast ions and improve the accuracy in determining their velocity distribution. Modeling of the expected scattered signals produced by these improvements and the diagnostics capability to measure the velocity distribution and isotopic ratio are presented.

• Sponsoring Organization: (US)
• OSTI ID: 40204785
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 1 Vol. 72; ISSN 0034-6748
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCURACY
DISTRIBUTION
LASERS
PHYSICS
PLASMA
THOMSON SCATTERING
VELOCITY