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利用升级后的JET伽马射线相机首次对D-He α粒子源进行空间分辨测量。

First spatially resolved measurements of the D-He α-particle source with the upgraded JET gamma-ray camera.

作者信息

Panontin E, Rigamonti D, Nocente M, Dal Molin A, Broslawski A, Craciunescu T, Croci G, Cruz N, Figueiredo J, Giacomelli L, Gorini G, Gosk M, Kaveney G, Kazakov Ye O, Kiptily V, Korolczuk S, Marcer G, Murari A, Perelli Cippo E, Salewski M, Urban A, Zychor I, Tardocchi M

机构信息

Dipartimento di Fisica "G. Occhialini", Università degli Studi di Milano-Bicocca, 20126 Milano, Italy.

Istituto per la Scienza e Tecnologia dei Plasmi, Consiglio Nazionale delle Ricerche, 20126 Milano, Italy.

出版信息

Rev Sci Instrum. 2021 May 1;92(5):053529. doi: 10.1063/5.0043776.

DOI:10.1063/5.0043776
PMID:34243238
Abstract

The Joint European Torus (JET) gamma-ray camera has been recently upgraded with the installation of new gamma-ray detectors, based on LaBr(Ce) scintillation crystals, which add spectroscopic capability to the existing system allowing measurements with good energy resolution (5% at 0.622 MeV), a dynamic range from hundreds of keV up to about 30 MeV, and high counting rate capabilities of MCps. First gamma-ray measurements during the C38 campaign of the JET have been successfully carried out, in particular, in D-He plasmas from three-ion ion cyclotron resonance heating experiments, where the detection of 16.4 MeV γ-rays from D + He → γ + Li reactions with the gamma-ray camera upgrade allowed determining the spatial profile of alpha particles born in D + He fusion reactions.

摘要

欧洲联合环形装置（JET）伽马射线相机最近进行了升级，安装了基于溴化镧（铈）闪烁晶体的新型伽马射线探测器，这为现有系统增添了光谱分析能力，能够实现具有良好能量分辨率（在0.622兆电子伏特时为5%）、数百千电子伏特至约30兆电子伏特的动态范围以及兆计数每秒的高计数率能力的测量。在JET的C38实验期间首次成功进行了伽马射线测量，特别是在三次离子回旋共振加热实验的氘 - 氦等离子体中，通过伽马射线相机升级对氘 + 氦→伽马射线 + 锂反应中16.4兆电子伏特伽马射线的探测，得以确定氘 + 氦聚变反应中产生的阿尔法粒子的空间分布。

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