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          Institute: MPI für Kernphysik     Collection: Heavy Flavour Physics     Display Documents

ID: 60093.0, MPI für Kernphysik / Heavy Flavour Physics
Update on the performance of the HERA-B Vertex Detector System
Authors:Abt, I.; Perschke, T; Schaller, S.; Masciocchi, S.; Bauer, C.; Bräuer, M.; Hofmann, Werner; Jagla, T.; Knöpfle, K. T.; Pleier, M. A.; Reeves, K.; Schmelling, M.; Schwingenheuer, B.; Sciacca, F.
Date of Publication (YYYY-MM-DD):2003
Title of Journal:Nuclear Instruments & Methods in Physics Research Section A - Accelerators Spectrometers Detectors & Associated Equipment.
Issue / Number:1-2
Start Page:24
End Page:31
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:The HERA-B Vertex Detector System (VDS) is a Roman Pot system integrated into the proton ring of the HERA accelerator at DESY and serves as an independent part of the tracking system of the HERA-B forward spectrometer. The performance of the VDS meets the design specification. It is based on double-sided silicon micro-strip detectors which are operated as close as 1 cm to the beam and are thus exposed to extremely high and inhomogeneous radiation levels. At the design luminosity the peak irradiation is around 3 x 10(14) minimum ionizing particles per cm(2) per year. Test measurements have shown adequate radiation tolerance on the required time scale of I year. New long-term studies presented here indicate that on periods longer than I year charge collection efficiencies might drop. (C) 2003 Elsevier B.V. All rights reserved.
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group of W. Hofmann/Heavy Flavour Physics (K. T. Knöpfle, M. Schmelling)
MPI für Physik
External Affiliations:Deutsches Elektronen Synchrotron. Notkestr. 85, 22607, Hamburg, Germany
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