VELO: the LHCb vertex detector
VELO: the LHCb vertex detector
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DOI：
10.1016/s0168-9002(02)01454-7
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发表时间：
2002-11-21
影响因子：
1.4
通讯作者：
Libby, J
中科院分区：
文献类型：
--
作者：
Libby, J
LHCb实验的顶点定位器（VELO）用于精确测量b介子的产生和衰变顶点。为了实现最精确的测量，硅微带探测器被放置在LHC光束的7转范围内；描述了为此所需的力学和与大型强子对撞机的集成。由于硅微带传感器与光束的距离太近，导致其工作在恶劣且不均匀的辐射环境中。辐照原型n-on-n和p-on-n硅微带探测器在40兆赫的测试光束中进行了评估。对这些原型机的效率进行了测量。概述了p-on-n探测器的特殊危险，并对LHCb的n-on-n技术选择进行了激励。最后，讨论了VELO在LHCb触发器二级中的应用。(C) 2002 Elsevier Science B.V.版权所有
The Vertex Locator (VELO) of the LHCb experiment is designed to measure precisely production and decay vertices of B-mesons. To allow the most accurate measurements the silicon micro-strip detectors are placed within 7 turn of the LHC beams; the mechanics and integration with the LHC machine required for this are described. The close proximity to the beams leads to the operation of silicon microstrip sensors in a harsh and non-uniform radiation environment. Irradiated prototype n-on-n and p-on-n silicon microstrip detectors have been evaluated in a test-beam while being read out at 40 MHz. Measurements of the efficiency of these prototypes are presented. The particular dangers of p-on-n detectors are outlined and the n-on-n technology choice for LHCb is motivated. Finally, the use of the VELO in the second-level of the LHCb trigger is discussed. (C) 2002 Elsevier Science B.V. All rights reserved.