The Data Acquisition System for the KOTO Experiment
IEEE Transactions on Nuclear Science(2015)
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 . 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.
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Key words
waveform digitization,koto experiment,j-parc,digitized waveform information,analogue-digital conversion,field-programmable gate array (fpga),readout electronics,adc modules,front-end electronics,10-pole bessel filter,data acquisition system (daq),data acquisition,event building,trigger system,high energy physics instrumentation,nuclear engineering computing,vme,pipeline readout,japan,data acquisition system,trigger electronics,fadc,shape,detectors,mesons,pipelines
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