The Belle Silicon Vertex Detector

被引：3
|
作者：
Ishino, H [1 ]
机构：
[1] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 152, Japan
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2005年 / 549卷 / 1-3期
关键词：
Belle; KEKB; Silicon Vertex Detector;
D O I：
10.1016/j.nima.2005.04.018
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The Belle Silicon Vertex Detector (SVD) was designed to measure B meson decay positions precisely for studies of time-dependent CP violation. Although the first version of SVD (SVD1) worked for 4years from 1999 with excellent performance, its insufficient radiation hardness drove us to build a second generation SVD (SVD2). The SVD2 was installed in Belle in the summer of 2003 and has been working well. The strip yield is estimated to be more than 95%. The signal-to-noise ratios are obtained to be 18-36, depending on detector ladders. The intrinsic spatial resolutions are obtained to be 12.0 +/- 0.4 and 22.3 +/- 0.8 mu m for phi- and z-sides, where z-side measures positions along the beam direction and 0 side is used for the azimuthal angle measurement. In this letter, an overview and performance results are provided for both generations of the Belle SVD. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：16 / 19
页数：4
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