Design, construction and operation of general control system of Materials and Life Science Experimental Facility (MLF-GCS) in J-PARC

Sakai, Kenji ; Oi, Motoki ; Kai, Tetsuya   ; Watanabe, Akihiko; Nakatani, Takeshi ; Higemoto, Wataru  ; Shimomura, Koichiro*; Kinoshita, Hidetaka   ; Kaminaga, Masanori  

A general control system for the Materials and Life Science Experimental Facility (MLF-GCS) at J-PARC has an advanced and independent system for control of the mercury target, including a large amount of mercury, three moderators with supercritical hydrogen, and cooling systems with radioactive water. Although the MLF-GCS is an independent system, it works closely with the accelerator and other facility control systems within J-PARC. The MLF have succeeded in the first proton beam injection and neutron beam generation in May 2008, and succeeded the muon beams generation in September 2008. The design and construction of the MLF-GCS has finished before the first proton beam injection. It has been operated stably and efficiently in the off- and on- beam commissioning. This paper reports on the design, construction and operation of the MLF-GCS.