Implementation of the [alpha]-CHERS diagnostic for D--T operation of TFTR
- Engineering Research Bldg., University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)
- Princeton Plasma Physics Laboratory, P. O. Box 451, Princeton, New Jersey 08543-0451 (United States)
The [alpha]-CHERS diagnostic is a high throughput charge exchange recombination spectroscopy diagnostic designed to measure the density profile and time evolution of 0--500 keV alpha particles during D--T operation of the Tokamak Fusion Test Reactor (TFTR). Following successful tests with a prototype [alpha]-CHERS system, an improved, multichannel system has been installed for D--T operation. Three spatial channels may be observed simultaneously, and the spectral resolution of 0.5 nm permits increased alpha energy resolution and improved impurity line identification. More efficient coupling optics between the spectrometer and charge coupled device (CCD) detectors have increased the light throughput, and radiation shielding has been installed around the detectors and spectrometers to eliminate the neutron/gamma-ray noise observed in high power D--D plasmas.
- DOE Contract Number:
- AC02-76CH03073; FG02-89ER53296
- OSTI ID:
- 7060089
- Journal Information:
- Review of Scientific Instruments; (United States), Vol. 66:1; ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALPHA SPECTROMETERS
DESIGN
PLASMA DIAGNOSTICS
TFTR TOKAMAK
CALIBRATION
CHARGE EXCHANGE
D-T REACTORS
PERFORMANCE TESTING
RECOMBINATION
CLOSED PLASMA DEVICES
MEASURING INSTRUMENTS
SPECTROMETERS
TESTING
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTORS
TOKAMAK DEVICES
700320* - Plasma Diagnostic Techniques & Instrumentation- (1992-)
700410 - Specific Fusion Devices & Experiments- (1992-)