NDLI: Scintillator geometry and surface treatment for readout by a small area silicon photomultiplier

Content Provider	IEEE Xplore Digital Library
Author	Barton, P. Wehe, D. Stapels, C. Christian, J.
Copyright Year	2007
Description	Author affiliation: Univ. of Michigan, Ann Arbor (Barton, P.; Wehe, D.)
Abstract	New solid state photomultipliers (SSPM) allow small radiation detectors to be more easily realized. Their compact, rugged, and simple operation are inherent advantages over the traditional photomultiplier tube. Because the cost and dark counts of SSPMs scale with area, we are investigating scintillation light read out from a fraction of one face of a scintillating crystal. The Monte Carlo optical transport code DETECT2000 [1,2] was used to track optical photons within the scintillator volume. A MATLAB interface was developed for DETECT2000 to facilitate parametric simulations of complex geometries. We examined the reflectivity of a 3 M mirror film and found it to be comparable to Teflon tape for certain wavelengths. Large crystals can be read out by small photodetectors with some degradation in the light collected. For small changes in size, light is lost approximately in proportion to the crystal-to-SSPM length ratio. For dosimetry applications, an effective brightness parameter was proposed which integrates the collected light yield for a uniform distribution of incident energies. A crystal twice the length of a 3 times 3 $mm^{2}$ SSPM was determined to be optimal for a 50 to 1500 keV radiation field normally incident on a Teflon-wrapped cubic LYSO crystal. By maximizing the photofraction and minimizing the photostatistical energy resolution, the optimal crystal-to- SSPM ratio was determined to vary with the energy of interest for spectroscopic applications.
Starting Page	1269
Ending Page	1274
File Size	185992
Page Count	6
File Format	PDF
ISBN	9781424409228
ISSN	10957863
DOI	10.1109/NSSMIC.2007.4437234
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Geometry Surface treatment Silicon Photomultipliers Optical films Photonic crystals Nonlinear optics Solid scintillation detectors Optical surface waves Solid state circuits
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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