100 MeV强流质子回旋加速器束流调试靶系统

中国原子能科学研究院正在建造一台100 MeV，200 A的强流质子回旋加速器，需要使用束流调试靶来调试加速器，为此设计了一套束流功率为20 kW的质子束调试系统。对该系统的束流输运线、靶材料的选取、靶结构、水冷计算、屏蔽结构等作了介绍。给出了整条束流输运线的匹配计算结果；通过对质子打靶后的中子产额、角通量、靶的活化等方面的比较，最终选用铝作为靶材料；根据加速器引出束流能量和功率，设计了分层式靶结构，同时对靶进行了水冷计算；打靶产生的出射粒子平均能量较高，导致产生的辐射剂量很大，考虑到对环境与工作人员的影响及费用，需要对其进行局部屏蔽，给出了屏蔽计算结果及屏蔽结构的设计。

Beam dump system design for 100 MeV high intensity proton cyclotron

A 100 MeV proton cyclotron, referred to as CYCIAE-100, is designed to provide proton beams with energy up to 200 A. When the cyclotron is under commissioning, a beam dump is required to measure the beam with a power of 20 kW. The paper introduces the beam line, target material selecting, target configuration, cooling calculation and the local shielding structure. The calculation result of the beam line matching is given. After comparing the neutron yield, flux angle and thermal activation of the targets of different materials by the proton targeting, the aluminum is selected as the target material. Based on the extraction beam energy and power of the cyclotron, a layered target configuration is designed, and the cooling calculation result is presented. The average energy of the emergent particle produced by the proton targeting is relatively high, so it will produce large radiation dose. Considering the harmful effect on the environment and personnel, the local shielding is selected for use. The calculation result and configuration of the local shielding are also presented in the paper.