Title :
TOF Clock System for BES III
Author :
Li, Hao ; Liu, Shubin ; Feng, Changqing ; Tang, Shaochun ; An, Qi
Author_Institution :
Dept. of Modern Phys., Univ. of Sci. & Technol. of China, Hefei, China
fDate :
4/1/2010 12:00:00 AM
Abstract :
In this paper, a system for providing a precisely timed clock to the time-of-flight (TOF) electronics at Beijing Spectrometer (BES III) is presented. System functions include radio-frequency reference signal transmission and low-jitter clock regeneration and distribution. A new clock synchronizing and monitoring mechanism is developed with off-the-shelf devices to synchronize the clock signal to the beam bunches. The measured short-term jitter performance of the system is 11 ps worst case, and robust synchronization to the beam bunches has also been demonstrated. The system has been installed and is operating reliably.
Keywords :
nuclear electronics; particle beam bunching; particle spectrometers; timing circuits; timing jitter; BES III; Beijing spectrometer; TOF clock system; beam bunches; clock signal; low-jitter clock regeneration; monitoring mechanism; off-the-shelf devices; phase stabilized optical fiber; radio-frequency reference signal transmission; robust synchronization; time-of-flight; Aerospace electronics; Clocks; Monitoring; Optical fibers; RF signals; Radio frequency; Signal generators; Synchronization; Time measurement; Timing jitter; Clock jitter; clock synchronization; phase stabilized optical fiber (PSOF); time-of-flight (TOF) electronics;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2009.2034659
