SRF 시험시설 내 극저온 설비용 제어시스템 구축 및 시운전

The SRF(Superconducting Radio Frequency) test facility was constructed in Daejeon and a cryogenic system, which includes a helium liquefier, a distribution box, transfer lines, and a 2K-system, was also set up for the cryogenic temperature. To control the cryogenic system, an Allen-Bradley PLC and a Siemens PLC were used. The Siemens PLC for the helium liquefier was delivered by its maker and tested by them. The AB PLC hardware, draft automatic control logics, and interlocks for others, such as the distribution box, the transfer lines and the 2K-system, were designed by us. A Korean vendor made the hardware, programmed logics, and some GUIs. We and the vendor, together, have had some commissioning for the cryogenic control system. Some hardware which had problems were changed and some programs which had bugs were modified.