A laser calibration system for the STAR TPC

被引:7
作者
Lebedev, A [1 ]
机构
[1] Brookhaven Natl Lab, Upton, NY 11973 USA
关键词
laser; calibration; tracking detector;
D O I
10.1016/S0168-9002(01)01747-8
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
A Time Projection Chamber (TPC) is the primary tracking detector for the STAR experiment at RHIC. A laser calibration system was built to calibrate and monitor the TPC tracking performance. The laser system uses a novel design which produces approximate to 500 thin, ionizing beams distributed throughout the tracking volume. This new approach is significantly simpler than the traditional ones, and provides complete TPC coverage at a reduced cost. The laser system was used during the RHIC 2000 summer run to measure drift velocities with about 0.02% accuracy and to monitor the TPC performance. Calibration runs were made with and without a magnetic field to check B field map corrections. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:163 / 165
页数:3
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