CSRm束流准直器模型腔设计

Design of Prototype Collimator for CSRm

摘要: 目前国际上的强流重离子加速器通常在机器中安装镀有低解吸率材料的束流准直器用于阻挡由于电荷态变化而损失的离子，降低解吸出的粒子数以维持真空系统的稳定。本文计划在现有的加速器冷却储存环主环（CSRm）上开展准直器模型腔测试、真空解吸率测量方面的研究。首先将介绍在CSRm上开展准直器系统研究的意义，其次根据实验室开发的损失率模拟计算软件确定准直器模型腔的安装位置，对安装位置中的真空设备进行了描述。随后重点阐述了CSRm准直器模型腔的硬件设计、控制系统及将来的测试方案。

Abstract: In order to suppress and control the gas desorption process, specifically designed beam catchers (collimators) with lower desorption rate material are installed at the impact positions to stabilize the vacuum system in the high intensity heavy ion accelerator. The test of prototype collimator and measurement of desorption rate will be carried out in the CSRm. The importance of collimation system research at CSRm was described in this paper. The prototype collimator installation position was calculated by the beam loss simulation program. The mechanical design of the vacuum chamber and the vacuum instruments were described. The control system of this collimation system and the beam test plan were also introduced in this paper.