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Project Title:  Spectroscopic Dosimeter Reduce
Fiscal Year: FY 2009 
Division: Human Research 
Research Discipline/Element:
HRP SR:Space Radiation
Start Date: 02/19/2009  
End Date: 12/31/2010  
Task Last Updated: 06/22/2009 
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Principal Investigator/Affiliation:   Czirr, John B Ph.D. / Merrill Corporation of Utah, dba MSI Photogenics 
Address:  515 East 1860 South 
Provo , UT 84606-7312 
Phone: (801) 374-6722  
Congressional District:
Organization Type: INDUSTRY 
Organization Name: Merrill Corporation of Utah, dba MSI Photogenics 
Joint Agency:  
Project Information: Grant/Contract No. NNX09CA21C 
Responsible Center: NASA JSC 
Grant Monitor: Cucinott1a, Francis  
Center Contact: 281-483-0968 
Solicitation / Funding Source: SBIR Phase II 
Grant/Contract No.: NNX09CA21C 
Project Type: GROUND 
Flight Program:  
TechPort: No 
No. of Post Docs:  
No. of PhD Candidates:  
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Human Research Program Elements: (1) SR:Space Radiation
Human Research Program Risks: (1) Cancer:Risk of Radiation Carcinogenesis
Human Research Program Gaps: (1) Cancer11:What are the most effective shielding approaches to mitigate cancer risks?
Flight Assignment/Project Notes: NOTE: End date changed to 12/31/2010 (previously 6/18/2010), per S. Krenek/JSC (7/2010)

Task Description: Analysis of Phase I test data demonstrates that the Photogenics Spectroscopic Dosimeter will detect neutron energies from 0.8 up to 600 MeV. The detector efficiencies in the energy region of interest to NASA of 0.5 to 150 MeV were predicted by MCNP-X models. These models were partially confirmed by the tests at the EAL and LANSCE, with a high confidence in the data for the 1-14 MeV range and a confirmation of the detector's spectroscopic capabilities between 15-150 MeV. Further analysis of the high energy data will be performed in Phase II.

Using the detection efficiencies determined Phase I and the IRCP74 damage coefficients, doses have been calculated for the neutron fluxes encountered in the test facilities. During Phase II a full-scale working model of the spectroscopic dosimeter will be fabricated and tested.

POTENTIAL NASA COMMERCIAL APPLICATIONS: NASA is seeking improved neutron spectroscopy to enhance its characterization of the space environment and has also identified a need for improved accuracy in the estimate of neutron dose experienced by astronauts on long duration space missions.

Research Impact/Earth Benefits: The NASA version of the dosimeter can be redesigned for use in radiation safety monitoring at a wide variety of facilities concerned with potential radiation hazards, i.e. laboratories, university research facilities, and private nuclear power plants.

Task Progress & Bibliography Information FY2009 
Task Progress: New project for FY2009. Reporting not required for this SBIR Phase 2 project.

Bibliography Type: Description: (Last Updated: ) 

Show Cumulative Bibliography Listing
 None in FY 2009