New surveillance system to enhance safety of J-PARC accelerators
2014
After the radioactive material leak accident at the Hadron Experimental Facility of J-PARC, various discussions have been made to investigate and analyze causes of the accident, together with the external expert panel. The accelerator control system is requested to detect early signals which may result in a severe accident. Two new surveillance systems have been introduced during 2013-2014: a High-risk MPS system, and a radiation-accelerator data-sharing system. The former is that MPS events, which may cause a severe accident, have been proved as the 'high-risk MPS'. They are summarized into an operator's GUI application. The latter is that a data-sharing system between the radiation safety system and the accelerator control system has been constructed. The radiation safety system has been an isolated system. However, the data-sharing system make it possible to watch at radiation data from the accelerator control system. (author)
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