Abstract:A superconducting cryogenic system has been designed and deployed in Beijing Electron-Positron Collider Upgrade Project (BEPCII). The system consists of a Siemens PLC (S7-PLC) for the compressor control, an Allen Bradley (AB) PLC for the cryogenic equipments, and the Experimental Physics and Industrial Control System (EPICS) that integrates the PLCs. The system fully automates the superconducting cryogenic control with process control, PID control loops, real-time data access and data restore, alarm handler an… Show more
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