The Data Acquisition System for the KOTO Experiment

Author

Sugiyama, Yasuyuki ; Jia Xu ; Tecchio, Monica ; Whallon, Nikola ; McFarland, Duncan ; Jiasen Ma ; Togawa, Manabu ; Tajima, Yasuhisa ; Bogdan, Mircea ; Ameel, Jon ; Campbell, Myron ; Yau Wai Wah ; Comfort, Joseph ; Yamanaka, Taku

Author_Institution

Dept. of Phys., Osaka Univ., Toyonaka, Japan

Volume

62

Issue

3

fYear

2015

fDate

Jun-15

Firstpage

1115

Lastpage

1121

Abstract

We developed and built a new readout and trigger electronics system, based on a waveform digitization and pipeline readout, for the KOTO experiment at J-PARC, Japan. KOTO aims at observing the rare kaon decay K_L → π⁰νν̅. A total of 4000 readout channels from various detector subsystems are digitized by 14 bit 125 MHz ADC modules equipped with 10 pole Bessel filters to reduce the pile-up effects. The trigger decision is made every 8 ns using the digitized waveform information. To avoid dead time, the ADC and trigger modules have pipelines in their FPGA chips to store data while waiting for a trigger decision. The KOTO experiment performed the first physics run in May 2013. The data acquisition system worked stably during the run.

Keywords

data acquisition; kaon decay; readout electronics; semileptonic decays; ADC modules; Bessel filters; FPGA chips; J-PARC; KOTO experiment; data acquisition system; electronics system; kaon_L decay into pion⁰+neutrino+antineutrino; readout electronics; Backplanes; Data acquisition; Detectors; Photonics; Pipelines; Timing; Data acquisition system (DAQ); FADC; VME; event building; field-programmable gate array (FPGA); front-end electronics; high energy physics instrumentation; trigger system; waveform digitization;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2015.2417312

Filename

7108074