Open AccessThe Data-Acquisition System with Cluster-Finding Trigger at the J-PARC KOTO Experiment
Author(s) -
C. X. Lin,
Y. Hsiung,
Y. W. Wah,
Yu-Chen Tung,
Y. Luo,
M. Bogdan
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1526/1/012034
Subject(s) - algorithm , computer science
In 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 µs 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 K L → π 0 ν ν ¯ is estimated to be 99.6%.