The following email has been sent to TECCHIO, Monica:

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Dear Monica Tecchio,

The submission of your abstract has been successfully processed.

Abstract submitted: https://indico.cern.ch/userAbstracts.py?confId=192695.

Status of your abstract: https://indico.cern.ch/abstractDisplay.py?abstractId=175&confId=192695.

See below a detailed summary of your submitted abstract:

Conference: Tipp 2014 - Third International Conference on Technology and Instrumentation in Particle Physics

Submitted by: TECCHIO, Monica

Submitted on: 31 January 2014 22:02

Title: The Data Acquisition System for the KOTO detector

Abstract content The goal of KOTO experiment at J-PARC is to discover and measure the rate of the rare decay KL -> pi0-nu-nubar, for which the Standard Model predicts a branching ratio of (2.4 +/- 0.4)x10E-11 . The experiment is a follow-up to E391 at KEK with a completely new readout electronics, trigger and data acquisition system. The KOTO DAQ comprises a front-end 14-Bit, 125MHz ADC board and a two-level hardware trigger electronics. The ADC board injects the frontend detector signals into a low pass filter before digitization. The digitized pulses are stored inside a 4 μs deep pipeline while waiting for the first level trigger decision, based on a minimum energy deposition in the CsI calorimeter in anti-coincidence with signals in veto detectors. Data is then buffered inside a L2 trigger board, which calculates the center-of-energy of the event. Data accepted by the second level trigger board is read out via a front panel 1Gb Ethernet port into a computer cluster through a network switch using UDP protocol. After several commissioning runs in 2011 and 2012, KOTO has taken the first physics run in May 2013. We will review the performance of the DAQ during this run as well as plans to upgrade the clock distribution system and the overall trigger hardware connectivity. Finally we present a redesign of the Level 2 trigger and readout electronics able to accommodate the increase in data rate expected in the next few years.

Summary

Primary Authors: XU, Jia (University of Michigan) jiaxu@umich.edu SHARMA, Arjun (University of Chicago) arjunsharmatejinc@uchicago.edu

Co-authors: TECCHIO, Monica (University of Michigan) tecchio@umich.edu CAMPBELL, Myron (High Energy Physics) myron@umich.edu AMEEL, Jon (U) sivaluna@umich.edu SUJIYAMA, Yasuyuki (Osaka University) sugiyama@champ.hep.sci.osaka-u.ac.jp CARRUTH, Celeste (University of Michigan) cceleste@umich.edu WHALLON, Nikola (University of Michigan) alokin@umich.edu SU, Stephanie (University of Michigan) stephsu@umich.edu MICALLEF, Jessica (University of Michigan) jessimic@umich.edu HUTCHESON, Melissa (University of Michigan) melhutch@umich.edu CAI, Tejin (University of Chicago) tejinc@uchicago.edu SHARMA, Arjun (University of Chicago) arjunsharma@uchicago.edu

Abstract presenters: XU, Jia

Track classification: Data-processing: 3b) Trigger and Data Acquisition Systems

Presentation type: --not specified--

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