Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9845175 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2005 | 4 Pages |
Abstract
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 4 years 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±0.8μm for Ï- and z-sides, where z-side measures positions along the beam direction and Ï 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.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
H. Ishino,