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TY - CONF AU - Agari, K. AU - Morino, Y. AU - Sato, Y. AU - Toyoda, A. ED - Corvetti, Lou ED - Riches, Kathleen ED - Schaa, Volker RW TI - Upgrades of Temperature Measurements and Interlock System for the Production Target at J-PARC Hadoron Experimental Facility J2 - Proc. of ICALEPCS2015, Melbourne, Australia, 17-23 October 2015 C1 - Melbourne, Australia T2 - International Conference on Accelerator and Large Experimental Physics Control Systems T3 - 15 LA - english AB - Hadron experimental facility is designed to handle intense slow-extraction proton beam from Main Ring (MR) of Japan Proton Accelerator Research Complex (J-PARC). On May 23, 2013, 2×10¹³ proton beams were instantaneously extracted to Hadron experimental facility in 5 milliseconds due to the malfunction of the power supply for Extraction Quadrapole magnet for a spill feedback at MR. Therefore the production target made of gold was locally damaged at Hadron experimental facility because of overheat by absorbing proton beam. After the accident we upgraded target temperature measurements with 100 milliseconds sampling and synchronization with beam spills in order to promptly detect damage to the production target as soon as possible. In addition, we also upgraded temperature trend graphs and an interlock system in order to figure out the state of the production target. Currently Hadron experimental facility ready to accept slow-extraction proton beam. The results of the temperature measurements and the interlock system for the production target during beam operation at J-PARC Hadron experimental facility, will be reported in this paper. PB - JACoW CP - Geneva, Switzerland SP - 371 EP - 373 KW - target KW - extraction KW - EPICS KW - proton KW - hadron DA - 2015/12 PY - 2015 SN - 978-3-95450-148-9 DO - 10.18429/JACoW-ICALEPCS2015-MOPGF123 UR - http://jacow.org/icalepcs2015/papers/mopgf123.pdf ER -