Supperlattice Doped APDs for Improved UV Sensitivity in Scintillator Calorimetry

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-SC0011316
Agency Tracking Number: 209845
Amount: $149,999.00
Phase: Phase I
Program: SBIR
Awards Year: 2014
Solicitation Year: 2014
Solicitation Topic Code: 35b
Solicitation Number: DE-FOA-0000969
Small Business Information
44 Hunt Street, Watertown, MA, 02472-4699
DUNS: 073804411
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Mickel McClish
 (617) 668-6801
Business Contact
 Kanai Shah
Title: Ms.
Phone: (617) 668-6801
Research Institution
One of the proposed next generation Intensity Frontier experiments is Mu2e. Mu2e will directly probe the Intensity Frontier as well as aid research on the Energy and Cosmic frontiers with precision measurements required to characterize the properties and interactions of new particles discovered at the Intensity Frontier. In order to reach its science goals, detector upgrades are required. A key apparatus of Mu2e is its calorimeter, which will need faster and more UV sensitive photodetectors for reading out the UV emission from fast scintillators located in the calorimeter disk. RMDs silicon avalanche photodiodes (APDs) have been identified as a potential photodetector for the Mu2e calorimeter, however, this will require an epitaxial modification (superlattice doping) of the APD to increase detector UV sensitivity and speed of response. In the proposed effort our optimization will involve exploiting an epitaxial fabrication process, which has been used successfully with silicon CCDs that will improve APD UV sensitivity and temporal properties for the detection of UV scintillation emission. Commercial Applications and Other Benefits: Medical imaging modalities such as SPECT and PET, which use blue-UV emitting scintillators, would directly benefit from advances in the proposed technology. Likewise, hand held instruments and vehicle portals used for monitoring nuclear material movement using UV emitting scintillation crystals would benefit as well. Ultraviolet and optical astronomy would be another potential application.

* Information listed above is at the time of submission. *

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