Neutron Dosimeter Development Based on Medipix2

Author

Othman, Mohd A R ; Petasecca, M. ; Guatelli, S. ; Uher, J. ; Marinaro, Damian G. ; Prokopovich, Dale A. ; Reinhard, Mark I. ; Lerch, Michael L F ; Jakubek, J. ; Pospisil, S. ; Rosenfeld, Anatoly B.

Author_Institution

Centre for Med. Radiations Phys., Univ. of Wollongong, Wollongong, NSW, Australia

Volume

57

Issue

6

fYear

2010

Firstpage

3456

Lastpage

3462

Abstract

A novel neutron dosimetry system for avionics and space applications is described. The new dosimetric system is based on Medipix2, a high density silicon based pixilated detector with integrated readout and digital interface circuitry. Real time dose equivalent response to fast neutron fields with flattened energy response is achieved through the coupling of a structured variable thickness polyethylene (PE) over layer with the high density pixilated detector. Experimental results obtained to 14 MeV D-T and Am-Be neutron fields are described along with a comparison to results obtained with GEANT4 simulations.

Keywords

avionics; dosimetry; neutron detection; nuclear electronics; readout electronics; silicon radiation detectors; Am-Be neutron field; D-T neutron field; Medipix2; digital interface circuitry; flattened energy response; high density silicon based pixilated detector; integrated readout system; neutron dosimetry system; structured variable thickness polyethylene coupling; Aerospace electronics; Detectors; Dosimetry; Neutrons; GEANT4; Medipix2; neutron dosimetry;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2010.2076837

Filename

5597966