Fast control latency uncertainty elimination for the BESIII ETOF upgrade

A new fanning topology is proposed to precisely fan out fast control signals in the Beijing Spectrometer（BESIII） end-cap time-of-flight（ETOF） electronics. However, uncertainty in transfer latency is introduced by the new fanning channel, which will degrade the precision of fast control. In this pape...

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Bibliographic Details
Published inChinese physics C Vol. 40; no. 9; pp. 107 - 113
Main Author 汪昀 曹平 刘树彬 安琪
Format Journal Article
LanguageEnglish
Published 01.09.2016
Subjects
不确定性
可调谐
延迟时间
控制信号
时间数字转换器
滤光器
现场可编程门阵列
电子
Online AccessGet full text
ISSN1674-1137
0254-3052
DOI10.1088/1674-1137/40/9/096101

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Summary:A new fanning topology is proposed to precisely fan out fast control signals in the Beijing Spectrometer（BESIII） end-cap time-of-flight（ETOF） electronics. However, uncertainty in transfer latency is introduced by the new fanning channel, which will degrade the precision of fast control. In this paper, latency uncertainty elimination for the BESIII ETOF upgrade is introduced. The latency uncertainty is determined by a Time-Digital-Converter（TDC） embedded in a Field-Programmable Gate Array（FPGA） and is eliminated by re-capturing at synchronous and determinate time. Compared with the existing method of Barrel-cap TOF（BTOF）, it has advantages of flexible structure, easy calibration and good adaptability. Field tests on the BESIII ETOF system show that this method effectively eliminates transfer latency uncertainty.
Bibliography:11-5641/O4
A new fanning topology is proposed to precisely fan out fast control signals in the Beijing Spectrometer（BESIII） end-cap time-of-flight（ETOF） electronics. However, uncertainty in transfer latency is introduced by the new fanning channel, which will degrade the precision of fast control. In this paper, latency uncertainty elimination for the BESIII ETOF upgrade is introduced. The latency uncertainty is determined by a Time-Digital-Converter（TDC） embedded in a Field-Programmable Gate Array（FPGA） and is eliminated by re-capturing at synchronous and determinate time. Compared with the existing method of Barrel-cap TOF（BTOF）, it has advantages of flexible structure, easy calibration and good adaptability. Field tests on the BESIII ETOF system show that this method effectively eliminates transfer latency uncertainty.
Yun Wang, Ping Cao, Shu-bin Liu, Qi an（1 State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei, 230026, China; 2 School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230027, China; 3 Department of Modern Physics, University of Science and Technology of China, Hefei 230027, China）
transfer latency uncertainty, SerDes, BESIII, endcap TOF
ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/40/9/096101