Thin scintillating tiles (with fiber readout and high light-yield) for the OPAL endcaps

Journal Article · Sun Nov 01 04:00:00 EST 1998 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.56941· OSTI ID:337483

Ball, A H ^[1]

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1. Department of Physics, University of Maryland, College Park, Maryland 20742 (United States)

Scintillating tiles with embedded wavelength-shifting fiber readout have recently been installed in the OPAL endcaps to improve trigger performance, time resolution and hermeticity for experiments at LEP II. The design is constrained to provide hermetic coverage of the available area with high single particle efficiency, uniform response and good time resolution, notwithstanding the limited space for the detector and its long readout cables, and despite the strong endcap magnetic field. A high light yield per embedded fiber is required. This paper motivates and describes the design, and demonstrates that the performance meets the required targets. A light yield of 14 photoelectrons/MIP and a time resolution of 3ns have been obtained during 1997 LEP operation. {copyright} {ital 1998 American Institute of Physics.}

• Sponsoring Organization: USDOE
• DOE Contract Number: FG05-91ER40670
• OSTI ID: 337483
• Report Number(s): CONF-9711182--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 450; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
LIGHT EMITTING DIODES
OPTICAL FIBERS
PARTICLE TRACKS
PERFORMANCE
PHOTOMULTIPLIERS
QUANTUM EFFICIENCY
READOUT SYSTEMS
SOLID SCINTILLATION DETECTORS
TIME RESOLUTION