Ren Yong, Liu Xiaogang, Gao Xiang
Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, PO Box 1126, Hefei, 230031 Anhui People's Republic of China.
Springerplus. 2016 May 23;5(1):673. doi: 10.1186/s40064-016-2340-0. eCollection 2016.
The superconducting cyclotron is of great importance to treat cancer parts of the body. To reduce the operation costs, a superconducting magnet system for the 250 MeV proton cyclotron was designed to confirm the feasibility of the superconducting cyclotron.
The superconducting magnet system consists of a pair of split coils, the cryostat and a pair of binary high temperature superconductor current leads. The superconducting magnet can reach a central magnetic field of about 1.155 T at 160 A. The three GM cryocooler with cooling capacities of 1.5 W at 4.5 K and 35 W at 50 K and one GM cryocooler of 100 W at 50 K were adopted to cool the superconducting magnet system through the thermosiphon technology.
The four GM cryocoolers were used to cool the superconducting magnet to realize zero evaporation of the liquid helium.
超导回旋加速器对于治疗身体的癌症部位非常重要。为降低运营成本，设计了一种用于250 MeV质子回旋加速器的超导磁体系统，以确认超导回旋加速器的可行性。
超导磁体系统由一对分裂线圈、低温恒温器和一对二元高温超导电流引线组成。超导磁体在160 A时可达到约1.155 T的中心磁场。采用三台在4.5 K时制冷量为1.5 W、在50 K时制冷量为35 W的GM低温制冷机和一台在50 K时制冷量为100 W的GM低温制冷机，通过热虹吸技术冷却超导磁体系统。
使用四台GM低温制冷机冷却超导磁体，以实现液氦的零蒸发。
