Lin C., Hsiung Y.B., Wah Y.W., Tung Y.C., Luo Y.T., Bogdan M.Hsiung Y.B., Wah Y.W., Tung Y.C., Luo Y.T., Bogdan M.Lin C.YEE HSIUNG2021-07-282021-07-28202017426588https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086405993&doi=10.1088%2f1742-6596%2f1526%2f1%2f012034&partnerID=40&md5=b6a535d8aaedaaafa346ad0dc36ddf11https://scholars.lib.ntu.edu.tw/handle/123456789/575264In order to collect the events efficiently with a high intensity beam, we built a new trigger electronics system based on the calibrated energy information and the number of electromagnetic shower clusters in the calorimeter for the J-PARC KOTO experiment. The dead time of this system is 0.16 s and the loss was measured to be less than 1%. By performing the online clustering algorithm on the simulated data, the trigger efficiency for the primary mode IMG ALIGN="MIDDLE" ALT="${K}-{L}\to {\pi } {0}\nu \bar{\nu }$" SRC="JPCS-1526-1-012034-ieqn1.gif" is estimated to be 99.6%. ? Published under licence by IOP Publishing Ltd.Clustering algorithms; Hadrons; Data acquisition system; Dead time; Electro-magnetic showers; Energy information; High intensity beam; Trigger efficiencies; Trigger electronics; Data acquisition[SDGs]SDG7conference paper10.1088/1742-6596/1526/1/0120342-s2.0-85086405993