Clock distribution system for large high altitude air shower observatory

Clock distribution system for large high altitude air shower observatory 1 first-author 1 1 1 corresp Corresponding author. E-mail address: anqi@ustc.edu.cn Corresponding author. E-mail address: anqi@ustc.edu.cn anqi@ustc.edu.cn State Key Laboratory of Particle Detection & Electronics, Anhui Key Laboratory of Physical Electronics, Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China State Key Laboratory of Particle Detection & Electronics, Anhui Key Laboratory of Physical Electronics, Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China In this paper, we report a clock distribution system for Water Cherenkov Detector Arrays (WCDAs) in Large High Altitude Air Shower Observatory (LHAASO) project. The designed electronics system is of high performance in implementing the clock distribution among detectors of a large scale of dimension. Based on Serializer/Deserializer (SerDes) and fiber transmission, the clock distribution system is the modules of central back end to distributed front end. The clock distribution system has been evaluated with a two modules system. While all the four SerDes candidates for clock transmission with jitters below 17 ps, the DS92LV16 has a fixed phase relationship between transmission clock and recovered clock, hence its use in LHAASO WCDAs. LHAASO Clock distribution Distributed architecture Serializer/Deserializer References He H . ICRC-0654: LHAASO project: detector design and prototype . Proceedings of the 31st international cosmic ray conference , Lodz, Poland , 2009 , 2613 - 2616 . ICRC-0654: LHAASO project: detector design and prototype Yao Z , Zha M , Cao Z , et al . ICRC-0720: LHAASO Simulation: Performance of the water Cherenkov detector array . Proceedings of the 31st international cosmic ray conference proceeding , Lodz, Poland , 2009 , 2877 - 2880 . ICRC-0720: LHAASO Simulation: Performance of the water Cherenkov detector array Cao Z . Chin Phys C , 2010 , 34 : 249 - 252 . (in Chinese) Chin Phys C The ANTARES Collaboration . Technical design report of the ANTARES 0.1 km2 project Version 1.0 , http://antares.in2p3.fr/Publications/TDR/v1r0 , 2001 . Technical design report of the ANTARES 0.1 km2 project Version 1.0 Konorov I , Angerer H , Mann A , et al . NSS MIC-2009 - 5402172: SODA: Time distribution system for the PANDA experiment . IEEE nuclear science symposium conference record . Orlando, USA , 2009 , 1863 - 1865 . NSS MIC-2009 - 5402172: SODA: Time distribution system for the PANDA experiment Abbasi R , Ackermann M , Adams J , et al . The IceCube data acquisition system: Signal capture, digitization, and time stamping . Nucl Instrum Meth Phys Res A , 2009 , 601 : 294 - 316 . The IceCube data acquisition system: Signal capture, digitization, and time stamping IceCube Collaboration . First year performance of the IceCube neutrino telescope . Astropart Phys , 2006 , 26 : 155 - 173 . First year performance of the IceCube neutrino telescope Moreira P , Serrano J , Wlostowski T , et al . ISPCS-2009- 5340196: White Rabbit: Sub-nanosecond timing distribution over Ethernet . ISPCS 2009 international IEEE symposium on precision clock synchronization for measurement control and communication , Brescia, Italy , 2009 , 1 - 5 . ISPCS-2009- 5340196: White Rabbit: Sub-nanosecond timing distribution over Ethernet Serrano J , Alvarez P , Cattin M , et al . ICALEPCS: The white rabbit project . The 12th ICALEPCS , Kobe, Japan , 2009 , 1 - 3 . ICALEPCS: The white rabbit project Lewis D . National Semiconductor Corporation, SerDes architectures and applications , http://www.national.com/assets/en/other , 2004 . National Semiconductor Corporation, SerDes architectures and applications Liu S , Zheng W , Liu X , et al . Nucl Tech , 2008 , 31 : 223 - 228 . (in Chinese) Nucl Tech VECTRON Corporation . EX-380 series 4 Pin DIP & SMD evacuated miniature crystal oscillator product data sheet , http://www.vectron.com/products/ocxo/ , 2001 . EX-380 series 4 Pin DIP & SMD evacuated miniature crystal oscillator product data sheet 10.13538/j.1001-8042/nst.22.353-357 Supported by the Knowledge Innovation Program of Chinese Academy of Sciences (Grant No. KJCX2-YW-N31) . 2011-05-12 2011-12-20 2021-01-19 2011 Nuclear Science and Techniques 06 22