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High Quantum Efficiency Fast Detectors for Readout of Scintillators for Gamma…

Award Information

Department of Homeland Security
Award ID:
Program Year/Program:
2006 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Voxtel Inc.
15985 NW Schendel Avenue Suite 200 Beaverton, OR 97006-
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2006
Title: High Quantum Efficiency Fast Detectors for Readout of Scintillators for Gamma Ray Detection
Agency: DHS
Contract: HSHQDC-07-C-00044
Award Amount: $150,000.00


High quantum efficiency (QE), fast (<20 nsec.) silicon APD detector will be optimized for the blue (e.g., 340-400 nm) optical radiation emitted by scintillators under gamma irradiation. The APDs have been designed to be highly manufacturable, with low dark count rates, high uniformity, nanosecond-scale temporal response. In Phase I, through a set of orthogonal designed experiments, the silicon APD array will be optimized for both the performance specifications required of gamma cameras as well as for high manufacturing yields. Candidate devices will be coupled with existing 2.5 GHz, low noise (20 e- rms) amplifiers, and the characteristics of the device, with and without coupling to LaBr3, will be measured. In Phase II, we will perform full reliability testing on the devices, and a fully functional high-performance gamma camera will be manufactured and its performance verified.

Principal Investigator:

George M. Williams

Business Contact:

George Williams
Small Business Information at Submission:

Voxtel, Inc.
12725 SW Millikan Way Suite 230 Beaverton, OR 97005-1782

EIN/Tax ID: 931285205
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No