Commissioning and Operation of the Cryostat for 3W1 SC Wiggler

分类： 物理学 >> 核物理学 提交时间： 2023-05-31

Xu,Miaofu Zhang,Xiangzhen Ye,Rui Wang,Jincan Bian,Xiaojuan Gao,Yao Li,Minxian Chen,Fusan Yang,Xiaochen Ge,Rui

摘要： A 3W1 superconducting wiggler (SCW) with the pole gap of 68 mm was successfully tested and installed in a BEPC II storage ring in November, 2019. The goal of zero liquid helium consumption was achieved, and the cryogenic system exhibited a 12% residual cooling capacity (approximately 0.69 W @4.2K). The 3W1-SCW was set to operate at 2.49 T and has been operating for more than seven months. Three instances of magnet quenching occurred during the normal operation. The evaporated helium gas can be recycled to the helium gas recycling system when the pressure in the helium tank is higher than the parameter value（the setpoint of the presssur value is 1.2 bara）. The cryogenic system can be recovered within 4 h if sufficient liquid helium is available to inject into the cryostat.

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