X-Ray Detector Arrays for Emission-Computed Tomography

Award Information
Agency:
Department of Health and Human Services
Branch
n/a
Amount:
$49,515.00
Award Year:
1993
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
22255
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Spire Corp.
One Patriots Park, Bedford, MA, 01730
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Rengarajan Sudharsanan
(617) 275-6000
Business Contact:
() -
Research Institution:
n/a
Abstract
The detector will consist of two silicon PIN junctions on either side of a high atomic number metal. The PIN junctions would be operated under reverse bias to deplete the intrinsic region, maximize sensitivity, and increase response speed. Quantum efficiency of the detector will be markedly enhanced at high X-ray energies by incorporating a thin, high atomic number layer into the detector structure. Orienting the detector at a sharp angle to the X-ray beam would increase effective path-length and, therefore, the interaction probability. Thickness of the high atomic number layer would be chosen to maximize photoelectron escape probability. Performance characteristics should be ideal for fabricating tomographic arrays.

* information listed above is at the time of submission.

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