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TY - CONF AU - Kim, J.H. AU - Cho, Y.-S. AU - Kim, D.I. AU - Kwon, H.-J. AU - Lee, S.G. AU - Song, Y.G. AU - Yun, S.P. ED - Schaa, Volker RW TI - Upgrade of Vacuum Control System for Komac Linac and Beamlines J2 - Proc. of ICALEPCS2017, Barcelona, Spain, 8-13 October 2017 C1 - Barcelona, Spain T2 - International Conference on Accelerator and Large Experimental Control Systems T3 - 16 LA - english AB - At Korea Multi-purpose Accelerator Complex (KO-MAC), we have been operating a proton linac since 2013 . It consists of a 100 MeV accelerator and 5 operational target rooms. Beam operation at KOMAC is carried out by a home-grown control system with a machine protection system which affects the accelerator the least when the machine suddenly fails. Our work is mainly concentrated on interlock sequence of vacuum related equipments based on a programmable logic controller (PCL). PCLs monitor vacuum status and control vacuum pumps and gate valves. By applying interlock sequence to PCLs connected to the vacuum equipments, we close gate valves to isolate a failed part so the the rest of the accelerator remains under vacuum, and safely shut down the vacuum pumps. Then the MPS receives a signal to safely stop the beam operation to protect the accelerator. We describe in this paper architecture of our PLC on interlock sequence of vacuum related equipment and its implementation. PB - JACoW CP - Geneva, Switzerland SP - 1358 EP - 1360 KW - controls KW - vacuum KW - ion KW - PLC KW - interface DA - 2018/01 PY - 2018 SN - 978-3-95450-193-9 DO - 10.18429/JACoW-ICALEPCS2017-THPHA012 UR - http://jacow.org/icalepcs2017/papers/thpha012.pdf ER -