THP027  ポスター③  10月20日 会議室P 13:00-15:00
Introduction of accelerator know-hows to KAGRA's vacuum system
○楊 敏,上窪田 紀彦(KEK/J-PARC),浅見 高史(東大/KEK),山田 秀衛(KEK/J-PARC),都丸 隆行(NAOJ),内山 隆(ICRR)
○Min Yang, Norihiko Kamikubota (KEK/J-PARC), Takashi Asami (UTokyo/KEK), Shuei Yamada (KEK/J-PARC), Takayuki Tomaru (NAOJ), Takashi Uchiyama (ICRR)
KAGRA is a large-scale cryogenic gravitational wave telescope in Japan. In December 2022, next collaborative observation on gravitational waves will start. The stable operation of pumps, gate valves and gauges in KAGRA vacuum system is critical, while there has been less effort to develop a remote monitoring system for them. With an MOU between KEK accelerator division, NAOJ and ICRR since 2020, we (KEK) discussed with KAGRA staff and developed a small EPICS-based vacuum monitoring system for KAGRA, which simulates the vacuum control system of J-PARC Main Ring. The system consists of a saba-taro micro server, a MOXA serial device server (a RS485-LAN converter), and a PLC controller with I/O modules. The micro server works as an EPICS IOC. The MOXA connects a cathode gauge (CC-10) and an ion pump (gamma digitel MPCq). The PLC I/O modules accept on/off/fault signals of a roots pump and a TMP (turbo molecular pump), and open/close signals of gate valves. In February 2022, this vacuum monitoring system was installed and tested successfully in the KAGRA tunnel. During the FY2022, we proceed to increase the number of remote monitoring stations. More details will be given in the paper.