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

fYear

2014

Firstpage

1

Lastpage

3

Abstract

We developed and built a new system of readout and trigger electronics, based on the 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 a 10-pole Bessel filter in order 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 the trigger decision. The KOTO experiment performed the first physics run in May 2013. The data acquisition system worked stably during the run.

Keywords

analogue-digital conversion; data acquisition; nuclear engineering computing; 10-pole Bessel filter; ADC modules; J-PARC; Japan; KOTO experiment; data acquisition system; digitized waveform information; pipeline readout; readout electronics; trigger electronics; waveform digitization; Data acquisition; Detectors; Electronic mail; Mesons; Pipelines; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Real Time Conference (RT), 2014 19th IEEE-NPSS

Print_ISBN

978-1-4799-3658-8

Type

conf

DOI

10.1109/RTC.2014.7097532

Filename

7097532