A prototype of trigger electronics for LAWCA experiment

The Large Area Water Cherenkov Array （LAWCA） experiment focuses on high energy gamma astronomy between 100 GeV and 30 TeV. Invoked by the idea of hardware triggerless structure, a prototype of LAWCA trigger electronics is implemented in one single VME-9U module which obtains all the data from the 10...

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Bibliographic Details
Published inChinese physics C Vol. 37; no. 12; pp. 71 - 77
Main Author 姚麟 赵雷 商林峰 刘树彬 安琪
Format Journal Article
LanguageEnglish
Published 01.12.2013
Subjects
Astronomy
Devices
Electronics
Field programmable gate arrays
Flexibility
FPGA器件
Hardware
High speed
Prototypes
TeV能区
串行数据传输
原型
实验
扳机结构
电子控制器
触发信号
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Summary:The Large Area Water Cherenkov Array （LAWCA） experiment focuses on high energy gamma astronomy between 100 GeV and 30 TeV. Invoked by the idea of hardware triggerless structure, a prototype of LAWCA trigger electronics is implemented in one single VME-9U module which obtains all the data from the 100 Front End Electronic （FEE） endpoints. Since the trigger electronics accumulate all the information, the flexibility of trigger processing can be improved. Meanwhile, the dedicated hardware trigger signals which are fed back to front end are eliminated; this leads to a system with better simplicity and stability. To accommodate the 5.4 Gbps system average data rate, the fiber based high speed serial data transmission is adopted. Based on the logic design in one single FPGA device, real-time trigger processing is achieved; the reprogrammable feature of the FPGA device renders a reconfigurable structure of trigger electronics. Simulation and initial testing results indicate that the trigger electronics prototype functions well.
Bibliography:11-5641/O4
The Large Area Water Cherenkov Array （LAWCA） experiment focuses on high energy gamma astronomy between 100 GeV and 30 TeV. Invoked by the idea of hardware triggerless structure, a prototype of LAWCA trigger electronics is implemented in one single VME-9U module which obtains all the data from the 100 Front End Electronic （FEE） endpoints. Since the trigger electronics accumulate all the information, the flexibility of trigger processing can be improved. Meanwhile, the dedicated hardware trigger signals which are fed back to front end are eliminated; this leads to a system with better simplicity and stability. To accommodate the 5.4 Gbps system average data rate, the fiber based high speed serial data transmission is adopted. Based on the logic design in one single FPGA device, real-time trigger processing is achieved; the reprogrammable feature of the FPGA device renders a reconfigurable structure of trigger electronics. Simulation and initial testing results indicate that the trigger electronics prototype functions well.
YAO Lin, ZHAO Lei, SHANG Lin-Feng,LIU Shu-Bin, AN Qi（1 State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China 2 Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China）
LAWCA, gamma astronomy, PMT, FPGA, trigger electronics
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/37/12/126101