High efficiency plastic scintillator detector with wavelength-shifting fiber readout for the GLAST Large Area Telescope

Details High efficiency plastic scintillator detector with wavelength-shifting fiber readout for the GLAST Large Area Telescope High efficiency plastic scintillator detector with wavelength-shifting fiber readout for the GLAST Large Area Telescope

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007nimpa.583..372m&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 583, Issue 2-3, p. 372-381.

Physics

3

Spaceborne And Space Research Instruments, Apparatus, And Components, X- And Gamma-Ray Telescopes And Instrumentation

Scientific paper

This paper describes the design and performance studies of the scintillator tile detectors for the anti-coincidence detector (ACD) of the Large Area Telescope (LAT) on the Gamma ray Large Area Space Telescope (GLAST), scheduled for launch in early 2008. The scintillator tile detectors utilize wavelength-shifting fibers and have dual-photomultiplier-tube readout. The design requires highly efficient and uniform detection of singly charged relativistic particles over the tile area and must meet all requirements for a launch, as well as operation in a space environment. We present here the design of three basic types of tiles used in the ACD, ranging in size from ˜450 to ˜2500 cm2, all ˜1 cm thick, with different shapes, and with photoelectron yield of ˜20 photoelectrons per minimum ionizing particle at normal tile incidence, uniform over the tile area. Some tiles require flexible clear fiber cables up to 1.5 m long to deliver scintillator light to remotely located photomultiplier tubes.

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