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Simulation of protective effect of the buffer on the first mirror in HL-2A tokamak

Zheng Ling Zhao Qing Zhou Yan

Simulation of protective effect of the buffer on the first mirror in HL-2A tokamak

Zheng Ling, Zhao Qing, Zhou Yan
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  • Received Date:  08 October 2010
  • Accepted Date:  27 December 2010
  • Published Online:  05 April 2011

Simulation of protective effect of the buffer on the first mirror in HL-2A tokamak

  • 1. School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China;
  • 2. Southwestern Institute of Physics, Chengdu 610041, China

Abstract: How to improve the protective effect of the first mirror is urgent for tokamaks at present. Buffer is one of the efficient methods to reduce the impurity redeposition on the first mirror. In order to study the protective effect of the buffer, the physical model of the particle redeposition on the first mirror is established with the Monte Carlo method on the basis of the parameters and experiments of the HL-2A tokamak. Particle redepositions on the first mirror are simulated under different conditions, including the cases without buffer and with cone buffer. The simulation results match well with the experimental results. The accuracy of the model is verified, and the simulation is efficient for providing theoretical basis for the protection of the first mirror.

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