ZEUS 中心轨迹探测器 z-时间系统的设计与性能
摘要
The ZEUS Central Tracking Detector utilizes a time difference measurement to provide a fast determination of the z-coordinate of each hit. The z-by-timing measurement is achieved by using a Time-to-Amplitude Converter which has an intrinsic timing resolution of 36 ps, has pipelined readout, and has a multihit capability of 48 ns. In order to maintain the required sub-nanosecond timing accuracy, the technique incorporates an automated self-calibration system. The readout of the z-by-timing data utilizes a fully customized timing control system which runs synchronously with the HERA beam-crossing clock, and a data acquisition system implemented on a network of Transputers. Three dimensional space-points provided by the z-by-timing system are used as input to all three levels of the ZEUS trigger and for offline track reconstruction. The average z-resolution is determined to be 4.4 cm for multi-track events from positron-proton collisions in the ZEUS detector.
引用
@article{arxiv.hep-ex/9707032,
title = {The Design and Performance of the ZEUS Central Tracking Detector z-by-Timing System},
author = {D. S. Bailey and R. C. Carter and B. Foster and N. Harnew and G. P. Heath and M. D. Jeffs and T. Khatri and M. Lancaster and J. B. Lane and I. C. McArthur and J. D. McFall and R. Milborrow and C. J. S. Morgado and M. C. Morrissey and J. Nash and G. Nixon and D. A. Phillips and M. Postranecky and S. P. H. Quinton and P. D. Shield and S. Topp-Jorgensen and G. Westlake and D. J. White and F. F. Wilson and .},
journal= {arXiv preprint arXiv:hep-ex/9707032},
year = {2009}
}
备注
49 pages, 32 figures. Accepted for publication in NIM-A