The development of Thomson scattering system on HL-2A tokamak
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041 (China)
A new Thomson scattering diagnostic system is successfully developed to measure core plasma electron temperature (T{sub e}) and density (n{sub e}) of HL-2A tokamak (major radius R=165 cm, minor radius a=40 cm). In this system, a standard lamp-monochromator combination is utilized for the calibration of spectral responses. By sweeping in the range of 750-1200 nm with a step of 2 nm, the work can be done automatically for one-point calibration and then for other. Electronic gain calibration and gain monitoring are done by pulsed light emitting diode light. By utilizing an intense Nd:YAG laser of pulse energy up to 4 J and employing good quality interference filters in the five-channel filter polychromator to surpress greatly the stray light, the TS system can be routinely used to make measurements with good quality data. After each HL-2A plasma discharge, the measured T{sub e} and n{sub e} data are transferred to HL-2A database for lookup and analyses.
- OSTI ID:
- 21024582
- Journal Information:
- Review of Scientific Instruments, Vol. 78, Issue 11; Other Information: DOI: 10.1063/1.2804105; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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