Developement of New Active Helium-Ash Exhaust using Divertor Simulator

使用偏滤器模拟器开发新型活性氦灰排气装置

• 批准号: 05452393
• 负责人: UESUGI Yoshihiko
• 金额: $ 2.82万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05452393/
• 关键词: Helium Ash Exhaust; Divertor Simulator; Divertor Biasing; Ion Reflection; NAGDIS-I; Particle Recycling; NAGDIS‐I; スクレイプオフ層; 粒子サイクリング; ヘリウム灰; リミタバイアス; 分極ドリフト; 磁場を横切る拡散; 径電場; リサイクリング制御

1. Monte Carlo Simulation on Active Helium-Ash Exhaust by Divertor BiasingWe have developed a Monte Carlo particle simulation code and estimated the characteristics of helium-ash exhaust in divertor plasma using it.(1) Combining with ACAT code which gives us the energy and angular distribution of the reflected neutrals on the divertor target, the transport of both helium and hydrogen particles in the divertor plasma can be investigated.(2) Selective helium-ash exhaust can be done by reducing the ion incident energy onto the divertor target by divertor biasing and optimizing the divertor target and pumping duct configuration. The selectivity of the helium ash as high as 3 is obtained.2. Experiment on Particle Reflection on the Material Target using Divertor SimulatorExperiments have been done using a small linear divertor simulator, Co-NAGDIS.The target plates of graphite and molybdenum are used and the reflected particles on the target are detected by a quadrupole mass analyzer. The angular distribution of the reflected particles is consistent with a simple theoretical prediction that the angular distribution of reflected neutral particle has a cosine distribution.

1.偏滤器偏置对主动氦灰排气的蒙特卡罗模拟我们开发了蒙特卡罗粒子模拟代码，并使用它估计了偏滤器等离子体中氦灰排气的特性。（1）结合ACAT代码，给出了能量和偏滤器目标上反射中性子的角分布，可以研究偏滤器等离子体中氦和氢粒子的传输。（2）选择性氦灰排气可以通过偏滤器偏置减少偏滤器目标上的离子入射能量并优化偏滤器目标和泵送管道配置来完成。氦灰的选择性高达3。 2．使用偏滤器模拟器进行材料目标上的粒子反射实验使用小型线性偏滤器模拟器Co-NAGDIS 进行了实验。使用石墨和钼靶板，并通过四极质量分析器检测目标上的反射粒子。反射粒子的角分布与反射中性粒子的角分布具有余弦分布的简单理论预测一致。

项目成果

T.Kuwabara: "Monte Carlo simulation on active helium‐ash exhaust by divertor biasing" Journal of Nuclear Materials. (印刷中).

T. Kuwabara：“偏滤器偏压对活性氦灰排放的蒙特卡罗模拟”核材料杂志（正在出版）。

Y.Uesugi, H.Misina, Y.Suzuki and S.Takamura: ""Formation of oscillating perpendicular electric field by AC limiter biasing on HYBTOK-II tokamak"" Journal of Nuclear Materials. (in print).

Y.Uesugi、H.Misina、Y.Suzuki 和 S.Takamura：“HYBTOK-II 托卡马克上通过交流限制器偏置形成振荡垂直电场”《核材料杂志》。

T.Kuwabara, M.Kojima, N.Ohno, Y.Uesugi, S.Takamura and Y.Yamamura: ""Monte Carlo simulation on active helium-ash exhaust by divertor biasing"" Journal of Nuclear Materials. (in print).

T.Kuwabara、M.Kojima、N.Ohno、Y.Uesugi、S.Takamura 和 Y.Yamamura：“偏滤器偏压对活性氦灰排放的蒙特卡罗模拟”《核材料杂志》。

Y.Uesugi: "Formation of oscillating perpendicular electric field by AC limiter biasing on HYBTOK‐II tokamak" Journal of Nuclear Materials. (印刷中).

Y. Uesugi：“HYBTOK-II 托卡马克上交流限制器偏置形成振荡垂直电场”核材料杂志（正在出版）。

S.Sasaki: "Temporal behavior of electron density profile during limiter biasing in HYBTOK-II tokamak" Physics of Plasma(in print).

S.Sasaki：“HYBTOK-II 托卡马克限制器偏置期间电子密度分布的时间行为”等离子体物理学（印刷中）。