Alpha particle collective Thomson scattering in TFTR

Conference · Mon Nov 01 04:00:00 EST 1993

OSTI ID:10194672

Machuzak, J S; Woskov, P P; Rhee, D Y; Gilmore, J ^[1]; Bretz, N L; Park, H K ^[2]; Aamodt, R E; Cheung, P Y; Russell, D A ^[3]; Bindslev, H ^[4]

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1. Massachusetts Inst. of Tech., Cambridge, MA (United States). Plasma Fusion Center
2. Princeton Univ., NJ (United States). Plasma Physics Lab.
3. Lodestar Research Corp., Boulder, CO (United States)
4. JET Joint Undertaking, Abingdon (United Kingdom)

A collective Thomson scattering diagnostic is being implemented on TFTR to measure alpha particle, energetic and thermal ion densities and velocity distributions. A 60 GHz, 0.1-1 kW gyrotron will be used as the transmitter source, and the scattering geometry will be perpendicular to the magnetic field in the extraordinary mode polarization. An enhanced scattered signal is anticipated from fluctuations in the lower hybrid frequency range with this scattering geometry. Millimeter wave collective Thomson scattering diagnostics have the advantage of larger scattering angles to decrease the amount of stray light, and long, high power, modulated pulses to obtain improved signal to noise through synchronous detection techniques.

• Research Organization: Princeton Univ., NJ (United States). Plasma Physics Lab.
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 10194672
• Report Number(s): PPPL-CFP--2987; CONF-9310195--2; ON: DE94002999
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700320
ALPHA PARTICLES
DEUTERIUM
MICROWAVE AMPLIFIERS
PLASMA DENSITY
PLASMA DIAGNOSTIC TECHNIQUES AND INSTRUMENTATION
PLASMA DIAGNOSTICS
SIGNAL-TO-NOISE RATIO
SIMULATION
TFTR TOKAMAK
THOMSON SCATTERING
TRITIUM