Neutron Yields Based on Transport Calculation in EAST ICRF Minority Heating Plasmas

Neutron diagnostics, including flux and energy spectrum measurements, have been applied on the experimental advanced superconducting tokamak （EAST）. The absolute calibration of neutron yields has been achieved by a calculation method using the Monte Carlo automatic modeling （MCAM） system and the Mon...

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Published inPlasma science & technology Vol. 15; no. 5; pp. 411 - 416
Main Author 李晓玲 万宝年 郭智荣 钟国强 胡立群 林士耀 张新军 丁斯晔 吕波
Format Journal Article
LanguageEnglish
Published 01.05.2013
Subjects
Computer simulation
Cyclotron frequency
Heating
ICRF
Ion cyclotron radiation
Ion temperature
Mathematical models
Minorities
Monte Carlo methods
Plasmas
中子产额
中子能谱测量
暖气
等离子体性能
计算
超导托卡马克
运输
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Summary:Neutron diagnostics, including flux and energy spectrum measurements, have been applied on the experimental advanced superconducting tokamak （EAST）. The absolute calibration of neutron yields has been achieved by a calculation method using the Monte Carlo automatic modeling （MCAM） system and the Monte Carlo N-Particles （MCNP） code. Since the neutron yield is closely related with the ion density and temperature, it is a good measure of plasma performance, especially the wave heating effect. In ion cyclotron range of frequencies （ICRF） experiments, the increase in the ion temperature derived by the neutron yield indicates an effective plasma heating. Minority protons damp a large fraction of the total wave power, and then transfer part of the energy to deuterium by collisions. Neutron spectrum measurements also indicate that no tail is created by high energy deuterons during ICRF heating. However, the ion temperature derived by the neutron yield is consistent with the result by using a poloidal X-ray imaging crystal spectrometer （PXCS）, showing a reliable transport calculation.
Bibliography:neutron yield, MCNP, ICRF, minority heating
LI Xiaoling, WAN Baonian, GUO Zhirong ,ZHONG Guoqiang , HU Liqun , LIN Shiyao, ZHANG Xinjun , DING Siye, LU Bo（1 Xlnstitute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China 2Wuhan Second Ship Design and Research Institute, Wuhan 430064, China）
34-1187/TL
Neutron diagnostics, including flux and energy spectrum measurements, have been applied on the experimental advanced superconducting tokamak （EAST）. The absolute calibration of neutron yields has been achieved by a calculation method using the Monte Carlo automatic modeling （MCAM） system and the Monte Carlo N-Particles （MCNP） code. Since the neutron yield is closely related with the ion density and temperature, it is a good measure of plasma performance, especially the wave heating effect. In ion cyclotron range of frequencies （ICRF） experiments, the increase in the ion temperature derived by the neutron yield indicates an effective plasma heating. Minority protons damp a large fraction of the total wave power, and then transfer part of the energy to deuterium by collisions. Neutron spectrum measurements also indicate that no tail is created by high energy deuterons during ICRF heating. However, the ion temperature derived by the neutron yield is consistent with the result by using a poloidal X-ray imaging crystal spectrometer （PXCS）, showing a reliable transport calculation.
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ISSN:1009-0630
DOI:10.1088/1009-0630/15/5/03