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<inf>L</inf> → π<sup>0</sup>vv. 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.
Original language | English (US) |
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Article number | 7108074 |
Pages (from-to) | 1115-1121 |
Number of pages | 7 |
Journal | IEEE Transactions on Nuclear Science |
Volume | 62 |
Issue number | 3 |
DOIs | |
State | Published - Jun 1 2015 |
Keywords
- Data acquisition system (DAQ)
- event building
- FADC
- field-programmable gate array (FPGA)
- front-end electronics
- high energy physics instrumentation
- trigger system
- VME
- waveform digitization
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Nuclear Energy and Engineering
- Nuclear and High Energy Physics