Diagnostics systems for the study of physics issues related to alpha-particles

用于研究与阿尔法粒子相关的物理问题的诊断系统

• 批准号: 16340177
• 负责人: SASAO Mamiko
• 金额: $ 9.56万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16340177/
• 关键词: plasma; neutron diagnostics; neutron spectrometer; alpha particle diagnostics; Lost alpha particle diagnostics; nuclear fusion; 中性子粒子ビーム; 負イオンビーム; 二次元計測; 中性粒子ビーム

Self-heating of a DT plasma by fusion-produced alpha particles is the key to realise self-sustainable ignition of a thermonuclear plasma in a fusion reactor, and physics related to alpha particles will become more important in the next-stage burning plasma experiments. In this project, fusion product measurements were studied from the viewpoint of alpha particle-related physics researches. Major results of this project are:[1] The transition mechanism to an improved mode, which is necessary to realize a burning plasma was studied experimentally, and the neoclassical theory was validated. [2] Several methods to measure confined alpha particles were examined, and R & D issues were specified. [3] Several methods to measure lost alpha particles were examined, and R & D issues were specified. [4] A new type of scintillator, which can be used to measure lost alpha particles under high temperature, was developed. [5] Various neutron measurement systems were examined, and R & D issues were specified. [6] A new neutron spectrometer for the deuteron/triton density ratio measurement was developed. [7] Combined the studies mentioned above, review papers of fusion products diagnostics were written in journals.

利用聚变产生的α粒子对DT等离子体进行自加热是实现聚变反应堆中热核等离子体自我持续点火的关键，与α粒子相关的物理将在下一阶段的燃烧等离子体实验中变得更加重要。本课题从α粒子相关物理研究的角度对聚变产物的测量进行了研究。本课题的主要成果有：[1]实验研究了实现燃烧等离子体所需的向改进模式转变的机制，并验证了新古典理论。[2]研究了几种测量受限α粒子的方法，并指定了研发问题。[3]研究了几种测量丢失α粒子的方法，并指定了研发问题。研制了一种新型闪烁体，可用于测量高温下丢失的α粒子。[5]考察了各种中子测量系统，并规定了研发问题。研制了一种用于测量氘核/海同密度比的新型中子星光谱仪。[7]结合上述研究，在期刊上发表了融合产物诊断的综述论文。

项目成果

Time-of-flight analyzer system to detect reflected particles from a solid surface following low-energy particle injection

飞行时间分析仪系统可检测低能粒子注入后从固体表面反射的粒子

• 发表时间: 2008
• 期刊: Review of Scientific Instruments Volume 79 Number 2
• 作者: H. Yamaokab;et. al.
• 通讯作者: et. al.

ITERプラズマ計測に関わる重要課題

与 ITER 等离子体测量相关的重要问题

• 发表时间: 2007
• 作者: T.Saida;M.Sasao;M.Isobe;A.V.Krasilnikov;R.Kumazawa;T.Mutoh;T.Watari;T.Seki;K.Saito;M. Sasao;笹尾真実子
• 通讯作者: 笹尾真実子

A TOF neutron spectrometer for measurement of the fuel ration on ITER

用于测量 ITER 燃料配给的 TOF 中子能谱仪

• 发表时间: 2005
• 作者: T.Saida;M.Sasao;M.Isobe;A.V.Krasilnikov;R.Kumazawa;T.Mutoh;T.Watari;T.Seki;K.Saito;M. Sasao;笹尾真実子;M. Sasao,;M. Sasao;M. Sasao^1;M. Sasao;M. Sasao;M. Sasao;K. Okada
• 通讯作者: K. Okada

Overview of neutron and confined/escaping alpha diagnostics planned for ITER

• DOI: 10.1088/0741-3335/46/7/s08
• 发表时间: 2004-07
• 期刊: Plasma Physics and Controlled Fusion
• 影响因子: 2.2
• 作者: M. Sasao;A. Krasilnikov;T. Nishitani;P. Batistoni;V. S. Zaveryaev;Y. Kaschuck;S. Popovichev;T. Iguchi;O. N. Jarvis;J. Källne;C. Fiore;L. Roquemore;W. Heidbrink;A. Donné;A. Costley;C. Walker

LH transition by a Biased Hot Cathode in the Tohoku University Heliac

东北大学 Heliac 中偏置热阴极的 LH 跃迁

• 发表时间: 2006
• 期刊: Nucl.Fusion 46
• 作者: S.Kitajima;et al.
• 通讯作者: et al.