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Development of Test System for Arc Power Control of EAST Neutral Beam Injector Ion Source

Wei Liu, Chundong Hu, Lizhen Liang, Sheng Liu, Shihua Song, Jinxin Wang

Fusion Science and Technology / Volume 75 / Number 1 / January 2019 / Pages 75-80

Technical Note /

Received:January 5, 2018
Accepted:April 27, 2018
Published:December 8, 2018

Neutral beam injection is recognized as one of the most effective methods for plasma heating. According to the requirements for physics experiments of the Experimental Advanced Superconducting Tokamak (EAST), two beamlines for neutral beam injection were built in 2014. In order to meet the diverse requirements of magnetic confinement experiments, recent attempts have been carried out for arc power control of a neutral beam injection ion source. A test system was added to the arc power control system. It provides a new method to smoothly change arc power during a discharge. According to the experimental results of controlling arc power, the fesibility of varying the arc power was verified in the duration of discharge. Meanwhile, the test system achieves the remote setting of arc power parameters.