Upgrade and Integrative Test of Control System for Vacuum Components in SuperKEKB

SuperKEKB is an upgrade project of KEKB, which is a double ring collider of electron and positron beams. The vacuum control system has also been upgraded. Key changes related to the framework of the system are that Computer Automated Measurement And Control (CAMAC) system as a data logger and VME computer as an Input Output Controller (IOC) of Experimental Physics and Industrial Control System (EPICS) have been replaced with CompactRIO (cRIO) and a Linux CPU module of Programmable Logic Controller (PLC), respectively. As an integrative and practical test, we have executed the final evacuation process, including the baking of sputter ion pumps and the activation of Non-Evaporable Getter (NEG) pumps, in a section between two gate valves in the SuperKEKB main ring. The control system supervised the discharge currents of ion pumps, readings of Cold Cathode Gauges (CCGs), heating power for the activation and so on. The new control system is in preparation for a start of the beam commissioning on fiscal 2015 in Japan.