Pellet Target a novel internal target at CSRm

• 作者: Li Zhankui Xu Hushan
• 来源期刊: 近代物理研究所和兰州重离子加速器实验室年报：英文版
• 学科: 工学
• 关键词: CSRM 内靶 球团 反应产物 强子物理 物理实验 高亮度 探测器
• 年，卷（期）: 2004,（1）
• 页码范围: 175-176
• 页数: 2页
• 分类号: TL594

摘要

<正>The internal targets used in the storage ring are quite promising targets due to the well defined reaction vertex, low background and undisturbed reaction products. Light-isotope targets, such as hydrogen and deuterium, are the most favorite candidates for hadron physics study. For physical experiments, the figure of merit is usually the luminosity, and it is found that the frozen micro-spheres (called pellets) could provide a high luminosity which is comparable to that of an external target, whereas the conventional gas targets can not reach this criterion because of the heavy gas load in the reaction chamber. A global detector with nearly '4 configuration can be arranged around the pellet target. In the near future, a pellet target facility with global detectors is foreseen at CSRm in Lanzhou.