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GlueX Experiment Document 1072-v3

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Spectral response of scintillating fibres

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Document type:
Journal Publications
Submitted by:
Zisis Papandreou
Updated by:
Zisis Papandreou
Document Created:
12 Jun 2008, 09:41
Contents Revised:
28 May 2009, 16:35
Metadata Revised:
28 May 2009, 16:35
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29 Oct 2008, 16:31
12 Jun 2008, 16:19
12 Jun 2008, 16:18
The spectral response of PHT-0044 (blue) and BCF-20 (green) scintillating fibres was measured as a function of wavelength using a UV LED. It was observed that significant spectral strength from the PHT-044 fibres was missing compared to manufacturer's specifications at the origin of the source, shifting the peak value of the spectrum to significantly higher values in wavelength. In contrast, the corresponding shift for the BCF-20 fibres was minimal. The mechanisms responsible for the observed behavior are discussed herein. Moreover, the attenuation length for each fibre type was extracted and studied as a function of wavelength. Finally, the measured fibre spectra were convolved with the wavelength response from a typical bi-alkali photo multiplier as well as a green-sensitive silicon photo multiplier, yielding the number of photoelectrons, which is shown to be consistent with the numbers extracted from cosmic-ray and photon-beam data.
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Published in Nucl. Instrum. & Meth. A vol. 596 pg. 338.
Publication Information:
submitted (June 22, 2008)
revised and resubmitted (August 5, 2008)
accepted for publication (August 21, 2008)
copyright form completed (September 1, 2008)
proofs received (September 18, 2008)
corrected proofs accepted (October 14, 2008)
volume and page numbers assigned (October 29, 2008)
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