Abstract
The Shanghai High repetition rate XFEL and Extreme Light Facility (SHINE), an advanced XFEL project, is now being built at Shanghai Advanced Research Institute (SARI), Chinese Academy of Sciences. It includes a hard X-ray free electron laser and a 100 pW intense laser facilities with overall length of 3.1 km. The XFEL part including an 8 GeV LINAC and 3 undulator lines is cooled with forced superfluid and supercritical helium at 2 K/4 K. The cryogenic system of SHINE consists of test facility cryogenic system (TFCS), accelerator cryogenic system (ACCS), and undulator cryogenic system (UNCS). A dedicated control system based on Experimental Physics and Industrial Control System (EPICS) will be built to automate the cryogenic system with process control, PID control loops, real-time data acquisition and storage, alarm handler and human machine interface. It is capable of automatic recovery as well. This paper describes details of control system structure, interfaces, controllers and the integration under EPICS framework.
Highlights
The SHINE cryogenic system is built to provide sufficient cooling at appropriate temperature levels to enable the test and operation of the superconducting components of accelerator and undulator system respectively
(2021) 8:11 cryoplants will be installed at the beginning of the LINAC to feed the upstream and midstream string by independent cryogenic distribution systems, and the third one will be located at the end of the LINAC to feed the downstream cryomodule string [1]
Since the whole cryogenic controls is designed scalable, the whole system will be easy to expand based on technical verification after test facility cryogenic system (TFCS) station construction
Summary
Introduction The SHINE cryogenic system is built to provide sufficient cooling at appropriate temperature levels to enable the test and operation of the superconducting components of accelerator and undulator system respectively. According to the project construction sequence, the TFCS will be the first of the SHINE cryogenic system to be designed, installed and commissioned. Are designed and implemented by SARI using Siemens S7–1500/et200SP model PLCs. Up till TFCS is being installed and on commissioning at the end of 2020, so chapters will focus on more details on TFCS control system.
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