Data acquisition system in Run-0a for the J-PARC E16 experiment
Abstract
J-PARC E16 is an experiment to examine the origin of hadron mass through a systematic measurement of spectral changes of vector mesons in nuclei. The measurement of pairs from the decay of vector mesons will provide the information of the partial restoration of the chiral symmetry in a normal nuclear density. To resolve a pulse pile-up and achieve good discrimination of from the background of a reaction rate of an order of 10 MHz, the data acquisition (DAQ) system uses waveform sampling chips of APV25 and DRS4. The trigger rate and data rate are expected to be 1 kHz and 130--330 MiB/s, respectively. The DAQ system for readout of APV25 and DRS4 were developed, where events were synchronized by common trigger and tag data. The first commissioning in beam, called Run-0a, was performed in June 2020 with about 1/4 of the designed setup. The DAQ worked with a trigger rate of 300 Hz in the Run-0a and the main bottleneck was a large data size of APV25. Further optimization of the DAQ system will improve the performance.
Keywords
Cite
@article{arxiv.2011.00225,
title = {Data acquisition system in Run-0a for the J-PARC E16 experiment},
author = {Tomonori Takahashi and Kazuya Aoki and Sakiko Ashikaga and Wen-Chen Chang and Eitaro Hamada and Ryotaro Honda and Masaya Ichikawa and Masahiro Ikeno and Shunsuke Kajikawa and Koki Kanno and Daisuke Kawama and Takehito Kondo and Che-Sheng Lin and Chih-Hsun Lin and Yuhei Morino and Tomoki Murakami and Wataru Nakai and Satomi Nakasuga and Megumi Naruki and Yuki Obara and Kyoichiro Ozawa and Hiroyuki Sako and Susumu Sato and Hiroshi Sendai and Kazuki Suzuki and Yudai Takaura and Manobu Tanaka and Tomohisa Uchida and Satoshi Yokkaichi},
journal= {arXiv preprint arXiv:2011.00225},
year = {2020}
}
Comments
IEEE Real Time 2020 Conference, 4 pages, 6 figures