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Low Dose Rate Tests of Plastic Scintillator Plates and Wavelength Shifting Fibers

Published online by Cambridge University Press:  21 February 2011

C. Zorn ,
V. Burkert ,
B. Kross ,
S. Majewski ,
A. Weisenberger ,
R. Wojcik ,
G. Asryan ,
M. Amaryan ,
R. Demirchyan  and
K. Egiyan
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C. Zorn
Affiliation:
Continuous Electron Beam Accelerator Facility, 12,000 Jefferson Avenue, Newport News, Virginia, U.S.A. 23606
V. Burkert
Affiliation:
Continuous Electron Beam Accelerator Facility, 12,000 Jefferson Avenue, Newport News, Virginia, U.S.A. 23606
B. Kross
Affiliation:
Continuous Electron Beam Accelerator Facility, 12,000 Jefferson Avenue, Newport News, Virginia, U.S.A. 23606
S. Majewski
Affiliation:
Continuous Electron Beam Accelerator Facility, 12,000 Jefferson Avenue, Newport News, Virginia, U.S.A. 23606
A. Weisenberger
Affiliation:
Continuous Electron Beam Accelerator Facility, 12,000 Jefferson Avenue, Newport News, Virginia, U.S.A. 23606
R. Wojcik
Affiliation:
Continuous Electron Beam Accelerator Facility, 12,000 Jefferson Avenue, Newport News, Virginia, U.S.A. 23606
G. Asryan
Affiliation:
Yerevan Physics Institute; Yerevan, Armenia
M. Amaryan
Affiliation:
Yerevan Physics Institute; Yerevan, Armenia
R. Demirchyan
Affiliation:
Yerevan Physics Institute; Yerevan, Armenia
K. Egiyan
Affiliation:
Yerevan Physics Institute; Yerevan, Armenia
Yu. Sharabyan
Affiliation:
Yerevan Physics Institute; Yerevan, Armenia
S. Stepanyan
Affiliation:
Yerevan Physics Institute; Yerevan, Armenia
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Abstract

A low dose rate evaluation of several scintillators and wavelength shifters of interest to the CEBAF program was performed with a 60Co line source to a total dose of 160 Gray at a rate of 0.5 Gy/hr in a slowly flowing oxygen atmosphere. The samples included the following: (1) a 2 meter piece of Bicron BC412 scintillator being extensively used in the CEBAF Large Acceptance Spectrometer, (2) a 1 meter long piece of green scintillator doped with a uniquely fast green fluor (G2), (3) wavelength shifting fiber dopedalso with G2, and (4) grooved acrylic-based scintillator that is readout with the WLS fiber. The data indicates that the BC412 shows no loss in intrinsic light output, but does have an attenuation loss amounting to 10% at 1 meter and 16% at 2 meters. The fast green scintillator (and fibers) showed no damage. When read out by WLS fibers, the acrylic scintillator displayed a loss in intrinsic light output, but no change in attenuation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 348 , 1994 , 487
Copyright
Copyright © Materials Research Society 1994

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References

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