The Data Acquisition System of the KOTO Experiment and the RCE Platform Technology Upgrade

被引：4

作者：

Su, Stephanie ^{[1
]}

Ameel, Jon ^{[1
]}

Beechert, Jacqueline ^{[1
]}

Campbell, Myron ^{[1
]}

Gee, Carolyn ^{[1
]}

Huff, Margaret ^{[1
]}

Micallef, Jessica ^{[1
]}

Robinson, Joshua ^{[1
]}

Rymph, Christopher ^{[1
]}

Schamis, Hanna ^{[1
]}

Taylor, Molly ^{[1
]}

Tecchio, Monica ^{[1
]}

Whallon, Nikola ^{[1
]}

Xu, Jia ^{[1
]}

Sugiyama, Yasuyuki ^{[2
]}

Tajima, Yasuhisa ^{[3
]}

Bogdan, Mircea ^{[4
]}

Wah, Yau ^{[4
]}

机构：

[1] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[2] Osaka Univ, Dept Phys, Osaka 5650871, Japan

[3] Yamagata Univ, Dept Phys, Yamagata 9908560, Japan

[4] Univ Chicago, Chicago, IL 60637 USA

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2017年 / 64卷 / 06期

基金：

日本学术振兴会;

关键词：

Compression algorithm; CP violation; data acquisition (DAQ) system; event building; flash analog-to-digital converter (FADC); Infiniband; message passing interface (MPI) protocol; reconfigurable clustering element (RCE) platform technology (RPT); RCE; VIOLATION; FCNC;

D O I：

10.1109/TNS.2017.2694040

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The KOTO experiment at J-PARC, Japan, aims to observe the rare neutral kaon decay mode K-L -> pi(0)nu(nu) over bar. After the first experimental run in May 2013 at a 24-kW beam power, the KOTO data acquisition (DAQ) system was upgraded in 2015 to provide efficient and reliable data collection at higher beam intensities. Lossless data compression in the analog-to-digital converter modules was implemented to reduce the size of data packets, resulting in a threefold increase in data collection rate. A new software trigger on a 47-node cluster was designed to use Infiniband hardware with message passing interface protocol to establish a mesh network inside the computer clusters for parallel data processing. The upgrade to the KOTO DAQ system was commissioned in 2015 and successfully collected data with a beam intensity of up to 42 kW. In preparation for increasing beam intensities in future runs, the hardware trigger upgrades using the reconfigurable clustering element platform technology are under development.

引用

页码：1338 / 1345

页数：8

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