BNCT02真空设计及仿真

刘顺明; 曹秀霞; 李志平; 欧阳华甫; 刘盛进; 王鹏程; 刘佳明; 关玉慧; 谭彪; 孙晓阳; 王一刚; 朱邦乐

doi:10.13922/j.cnki.cjvst.202405016

BNCT02真空设计及仿真

The Vacuum Design and Simulation of BNCT02

摘要

摘要: BNCT02由两套加速器和5个治疗端组成，可实现2组癌症患者同时治疗。目前开工建设的是其中一套装置，由一台ECR离子源，一条低能传输线（LEBT），一台2.8 MeV射频四极加速器（RFQ），两条高能传输线（HEBT）、两个治疗端和一条临时调束线组成。文章首先介绍了BNCT02真空设计，利用Molflow软件计算了RFQ及HEBT不同状态下的压力分布，并与实测情况进行比对。然后，对HEBT区段异型真空盒形变、水冷真空盒温升进行模拟计算，并优化对应真空盒设计。目前整个装置已经稳定运行，真空系统满足设计要求。

Abstract: BNCT02 consists of two sets of accelerators and five treatment terminals, enabling simultaneous treatment of two groups of cancer patients. Currently under construction is one of the units, consisting of an ECR ion source, a low energy beam transport (LEBT) line, a 2.8 MeV radio frequency quadrupole accelerator (RFQ), two high energy beam transport (HEBT) lines, two treatment terminals, and a temporary line with beam dump. Firstly, the vacuum design of BNCT02 is introduced. The pressure distribution of RFQ and HEBT under different states is simulated and calculated by using Molflow software, and compared with the measured results. Then, the deformation and temperature rise of the irregular chamber and the water-cooled chamber in HEBT are simulated, and the chamber design is optimized. Currently, the entire device is running stably, and the vacuum system meets the design requirements.

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