Recent progress of the HCN interferometer on J-TEXT tokamak

Journal Article · Mon Oct 15 00:00:00 EDT 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4728310· OSTI ID:22093918

Gao, L.; Zhuang, G.; Zhijiang, Wang; Chen, W.; Chen, J.; Li, Q.; Liu, Y. ^[1]

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1. State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074 (China)

A multichannel far-infrared HCN laser interferometer has been developed to measure plasma electron density for the J-TEXT tokamak. Initial operation of a seven chords system with 7 cm spacing and a 0.1 ms temporal resolution is described. Density modulation experiments in J-TEXT show that it is possible to obtain information on particle transport by precise measurement of the density perturbation amplitude and phase spatial variation. An optical configuration upgrade has been implemented in order to improve phase resolution.

• OSTI ID: 22093918
• Journal Information: Review of Scientific Instruments, Vol. 83, Issue 10; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
AMPLITUDES
CONFINEMENT
DISTURBANCES
ELECTRON DENSITY
INTERFEROMETERS
LASER RADIATION
MODULATION
PERTURBATION THEORY
PLASMA
PLASMA DENSITY
PLASMA DIAGNOSTICS
RESOLUTION
TOKAMAK DEVICES