Physical Optics Corporation — Department of Defense SBIR Phase I: A15-111

Description

To address the Armys need for real-time measurement of prompt-gamma and prompt-neutron doses from a nuclear blast, Physical Optics Corporation (POC) proposes to develop a new neutron and gamma radiation dosimeter (NEUGARD). The proposed NEUGARD is based on an innovative wide-bandgap semiconductor structure combined with a neutron converter and moderating layers and charge-sensitive controlled integration time electronics. Using wide-bandgap semiconductor material, NEUGARD is capable of integrating or accumulating radiation-generated charge with high accuracy for a longer time. Using controlled integration time, NEUGARD provides real-time measurements of radiation with an extended dynamic range of 0.05-3000 cGy. In Phase I, the feasibility of NEUGARD will be demonstrated through (1) design and fabrication of a breadboard prototype in laboratory environment, achieving Technology Readiness Level (TRL) 4; (2) testing of the breadboard prototype against prompt-gamma and prompt-neutron environment, and (3) review and analysis of data to determine the feasibility of the proposed technology to meet the Armys need. Based on the Phase I effort, POC will further develop and demonstrate, in Phase II, NEUGARDs capability to accurately measure prompt-gamma and prompt-neutron doses in real time through high-fidelity breadboard validation in a relevant environment, reaching TRL 5-6.