Status of the High Efficiency Multimode Imager

Author

Galloway, Michelle L. ; Amman, Mark ; Awadalla, Salah ; Bindley, Glenn ; Boggs, Steven E. ; Chen, Henry ; Chivers, Dan ; Lee, Julie S. ; Luke, Paul N. ; Marthandam, Pramodha ; Mihailescu, Lucian ; Negut, Victor ; Priest, Anders ; Taherion, Saeid ; Vetter,

Author_Institution

Space Sci. Lab., Univ. of California at Berkeley, Berkeley, CA, USA

fYear

2011

fDate

23-29 Oct. 2011

Firstpage

1290

Lastpage

1293

Abstract

The High Efficiency Multimode Imager (HEMI) is an instrument to detect, locate, and spectroscopically characterize radioactive sources with gamma-ray emissions at long-range standoff distances. HEMI consists of modular cubic-centimeter coplanar-grid CdZnTe detector elements configured in a two-plane array that allows for both Compton scattering and coded aperture imaging. Measurements and simulations have been performed using a variety of radioactive sources at different positions with respect to a prototype HEMI array in order to demonstrate the source identification and localization capabilities of the system. This paper will provide an overview of the HEMI instrument as well as present results from simulations and measurements using the completed detector array.

Keywords

Compton effect; gamma-ray detection; gamma-ray production; high energy physics instrumentation computing; image reconstruction; radioactive sources; semiconductor counters; Compton scattering; coded aperture imaging method; gamma-ray emissions; high efficiency multimode imager; image reconstruction; long-range standoff distance; modular cubic-centimeter coplanar-grid CdZnTe detector; prototype HEMI array; spectroscopically radioactive source characterization; two-plane array; Application specific integrated circuits; Detectors; Energy measurement; Q measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE

Conference_Location

Valencia

ISSN

1082-3654

Print_ISBN

978-1-4673-0118-3

Type

conf

DOI

10.1109/NSSMIC.2011.6154328

Filename

6154328