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Title: 2D electron density profile measurement in tokamak by laser-accelerated ion-beam probe

A new concept of Heavy Ion Beam Probe (HIBP) diagnostic has been proposed, of which the key is to replace the electrostatic accelerator of traditional HIBP by a laser-driven ion accelerator. Due to the large energy spread of ions, the laser-accelerated HIBP can measure the two-dimensional (2D) electron density profile of tokamak plasma. In a preliminary simulation, a 2D density profile was reconstructed with a spatial resolution of about 2 cm, and with the error below 15% in the core region. Diagnostics of 2D density fluctuation is also discussed.
Authors:
; ; ; ;  [1] ;  [2] ;  [3]
  1. State Key Lab of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871 (China)
  2. Institute of Physics, Chinese Academy of Sciences, P. O. Box 603, Beijing 100190 (China)
  3. Center for Fusion Science of Southwestern Institute of Physics, P. O. Box 432, Chengdu 610041 (China)
Publication Date:
OSTI Identifier:
22303705
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ELECTRON DENSITY; ELECTROSTATIC ACCELERATORS; ERRORS; HEAVY IONS; ION BEAMS; ION PROBES; PLASMA; SIMULATION; SPATIAL RESOLUTION; TOKAMAK DEVICES; TWO-DIMENSIONAL CALCULATIONS