Toroidal interferometer/polarimeter density measurement system on ITER

Journal Article · Fri Oct 01 04:00:00 EDT 2004 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1786640· OSTI ID:20636642

Kondoh, T; Costley, A E; Sugie, T; Kawano, Y; Malaquias, A; Walker, C I ^[1]

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1. ITER International Team, Naka Joint Work Site, Ibaraki 311-0193 (Japan)

In order to measure the line integrated electron density on the International Thermonuclear Experimental Reactor (ITER), a vibration-compensated five-channel CO{sub 2} laser interferometer/polarimeter system is being developed. The design of the interferometer/polarimeter has been improved from the previous design, which used a CO{sub 2} laser (wavelength, {lambda}=10.6 {mu}m) and a CO laser ({lambda}=5.3 {mu}m), on the basis of experience gained with a dual CO{sub 2} system ({lambda}=10.6 and 9.27 {mu}m) on JT-60U. The JT-60U system gives good reliability for both interferometry and polarimetry operation. The performance of the dual CO{sub 2} laser is expected to meet the requirements for measurements on ITER (accuracy; 1%, time resolution; 1 ms)

• OSTI ID: 20636642
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 75; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCURACY
CARBON DIOXIDE LASERS
ELECTRON DENSITY
EXPERIMENTAL REACTORS
INTERFEROMETERS
INTERFEROMETRY
ITER TOKAMAK
JT-60U TOKAMAK
PERFORMANCE
PLASMA CONFINEMENT
PLASMA DENSITY
PLASMA DIAGNOSTICS
POLARIMETERS
POLARIMETRY
RELIABILITY
TIME RESOLUTION