BES3 time of flight monitoring system

Harris, F. A.; Kennedy, J. W.; Liu, Q.; Nguyen, L.; Olsen, S. L.; Rosen, M.; Shen, C. P.; Varner, G. S.; Heng, Y. K.; Sun, Z. J.; Zhu, K. J.; An, Q.; Feng, C. Q.; Liu, S. B.

BES3 time of flight monitoring system

Authors

Description

A Time of Flight monitoring system has been developed for BES3. The light source is a 442-443 nm laser diode, which is stable and provides a pulse width as narrow as 50 ps and a peak power as large as 2.6 W. Two optical-fiber bundles with a total of 512 optical fibers, including spares, are used to distribute the light pulses to the Time of Flight counters. The design, operation, and performance of the system are described.
8 pages 16 figures, submitted to NIM