Our work investigates a new technique in employing integrated
circuits (ICs) as a new type of radiation detection media. As IC
technology has advanced circuits on these chips are becoming
increasingly sensitive to radiation damage and therefore fail to
function properly. Researchers at Texas A&M University have
been able to convert this disadvantage into an advantage by
developing an IC, which has both sensitive (RSA) and hardened (RHA)
radiation sectors. When a charged particle deposits its energy in
the RSA, the interaction is registered by the hardened "watch-dog"
sector, which then returns the RSA to a normal functioning status
within a few nanoseconds.
Our work explores the applicability of this IC to perform
various types of radiation detection. With this IC being sensitive
to charge particle interactions, radiation transport simulation
will determine how effective this technology can be in a new type
of alpha/beta survey probe. The ICs will also be studied to see if
they may make a suitable photo-multiplier tube (PMT) replacement.
Lastly, using this IC technology a new type of neutron detector may
be constructed using 10B coated ICs.
Using these ICs will have advantages over existing radiation
detection technologies. The survey probe, that will utilize an
attenuator material, will be the only probe in the world that can
perform in-the-field beta energy discrimination. Use of ICs for
replacing a PMT will result in better energy resolution for gamma
spectroscopy and in the case of neutron detection it will result in
reduced costs, lower power requirements and a reduced footprint. As
this technology is perfected, detector devices may be constructed
that are as thin as a sheet of cardboard and will operate for days
on off-the-shelf batteries.
- M.D. Shah, C.M. Marianno, and S.P. Khatri,
"The Neutron Detector Using Radiation Integrated Circuits,"
Poster. 2016 IEEE Symposium on Radiation Measurements and Applications, Berkeley, CA, 22-26 May 2016.
- M. Shah, C. Marianno, and S. Khatri,
"Radiation Detection Using Integrated Circuits,"
59th Annual Meeting Health Physics Society, Baltimore, Maryland, 13-17 July 2014.
- M.D. Shah, C. Marianno, S.P. Khatri, and D.R. Boyle,
"Simulation Analysis of Scintillation in Sodium Iodide Detector,"
55th Annual Meeting of the Institute of Nuclear Materials Management, Atlanta, Georgia, 20-14 July 2014.
- M.D. Shah, C. Marianno, and S. Khatri,
"Integrated Circuits Replacing PMTs,"
2014 STC-HPS Student Presentations and Annual Business Screening Meeting, College Station, Texas, 29 March 2014.