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Development of a Large-Area Mercuric Iodide Photodetector for Scintillation…

Award Information

Department of Energy
Award ID:
Program Year/Program:
2001 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Constellation Technology
7887 Bryan Dairy Road, Suite 100 Largo, FL 33777-1452
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2001
Title: Development of a Large-Area Mercuric Iodide Photodetector for Scintillation Spectroscopy
Agency: DOE
Contract: DE-FG02-00ER82980
Award Amount: $749,569.00


61036 This project will develop HgI2 photodetectors, used in nuclear physics research, with resolution better than 6% for 662 keV. In Phase I, a process for manufacturing HgI2 photodetectors was developed. The detectors had a Full Width Half Max (FWHM) resolution between 5.6% and 6.6%, with an average of 6.2% FWHM for 9 out of 10 operational units produced. Phase II will fine tune performance and commercialize the process with formalized process control and quality assurance monitoring. 100 HgI2 detectors will be manufactured in 14 process change steps, where each step in the process addresses optimization of functional and appearance design considerations. All units will enter a longevity study, which will provide data for process control and quality assurance for detectors yielding FWHM resolution of 5.5%, or better. Commercial Applications and Other Benefits as described by the awardee: The technology should replace bulky and less efficient photomultiplier tupes used for intermediate energy room temperature nuclear spectroscopy. HgI2 replacement units would not be susceptible to magnetic fields and would be ruggedized for nuclear assay field uses. There is also a potential for medical applications.

Principal Investigator:

John Richards

Business Contact:

Pete Secola
Chief Financial Officer
Small Business Information at Submission:

Constellation Technology Corporation
7887 Bryan Dairy Road Suite 100 Largo, FL 33777

EIN/Tax ID: 593582307
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No