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Report No.

Applications of triggered scaler module for accelerator timing

Yang, M.*; Kamikubota, Norihiko*; Tajima, Yuto*; Sato, Kenichi*; Kikuzawa, Nobuhiro 

During the operation of J-PARC timing system since 2006, there were a few unexpected trigger-failure events occurred. It was difficult to find the faulty module among many suspicious modules. In order to find such a module easily, a Yokogawa PLC-type triggered scaler module was developed. It can accept the start of J-PARC Main Ring (MR) slow cycle (2.48s/5.2s) signal and the start of rapid cycle (25Hz) signal, which are generated by J-PARC timing system. A scaler in the module counts number of trigger pulses during the J-PARC slow cycle and stores counts in an array. In 2018, the module was tested successfully and the results showed the expected performance. The details of the module and two associated applications will be described in the paper.



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