LHAASO水切伦科夫探测器阵列时钟原型系统  

LHAASO WCDA's Prototype Clock System

作　　者：李成[1,2] 刘树彬[1,2] 商林峰[1,2] 曹平[1,2] 安琪[1,2] 

机构地区：[1]核探测与核电子学国家重点实验室,中国科学技术大学近代物理系,合肥230026 [2]物理电子学安徽省重点实验室,合肥230026

出　　处：《核电子学与探测技术》2013年第4期410-416,共7页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金(11175174和11005107);中国科学院知识创新工程项目(KJCX2-YW-N27)资助

摘　　要：介绍了LHAASO WCDA读出电子学时钟原型系统的设计,分析了该时钟系统的设计原理,介绍了测试方法和测试结果。该原型系统基于精简的White Rabbit Project原理设计,主要包括时钟源插件、时钟发送插件和时钟接收模块3部分。对该原型系统的测试结果表明,时钟接收模块上两时钟通道之间的时钟偏差可以调整到<80 ps,时钟抖动<40 ps,可满足LHAASO WCDA读出电子学设计需求。A prototype of the clock system for the LHAASO WCDA readout electronics is introduced, including the design principle of the prototype, the test setup and the test result. Based on the reduced and improved White Rabbit Project, the prototype mainly includes three parts： the clock source module, the clock transmitter module and the clock receiver module. The test result of the prototype shows that the clock skew between two channels on the clock receiver module can be adjusted to less than 80ps and the clock jitter is less than 40ps, which fulfills both the skew and the jitter requirement of less than lOOps for the LHAASO WCDA clock system.

关 键 词：大型高海拔空气簇射观测站水契伦科夫探测器 时钟数据传输方法 时钟偏差 时钟抖动 

分 类 号：TL824[核科学技术—核技术及应用]