BES3 time of flight monitoring system
F. A. Harris, J. W. Kennedy, Q. Liu, L. Nguyen, S. L. Olsen, M. Rosen,, C. P. Shen, G. S. Varner, Y. K. Heng, Z. J. Sun, K. J. Zhu, Q. An, C. Q., Feng, S. B. Liu
TL;DR
The paper presents a Time of Flight monitoring system for BES3 utilizing a stable laser diode and optical fibers, detailing its design, operation, and performance.
Contribution
It introduces a new TOF monitoring system with a high-power laser diode and fiber distribution for BES3, including detailed design and performance analysis.
Findings
System achieves narrow 50 ps pulse width
Uses 512 optical fibers for light distribution
Details system design and operational performance
Abstract
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.
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