Study of cadmium zinc telluride (CZT) radiation detector modules under moderate and long-term variations of temperature and humidity

Author

Mæhlum, Gunnar ; Dietzel, Knut I. ; Meier, Dirk ; Szawlowski, Marek ; Sundal, Bjørn ; Vandehei, Thor ; Wagenaar, Douglas ; Patt, Bradley E.

Author_Institution

Gamma Medica-Ideas, Northridge

Volume

2

fYear

2007

fDate

Oct. 26 2007-Nov. 3 2007

Firstpage

1645

Lastpage

1648

Abstract

A gamma camera, assembled from radiation imaging modules based on cadmium zinc telluride (CZT), has been studied under moderate and long-term variations of temperature (15degC to 40degC) and humidity (10% to 70%). Over one year we acquired energy spectra from radiation sources and we measured the photo-peak position and energy resolution. We observe that the camera remains within the desired performance specifications. We conclude that the CZT sensor material is stable over the temperature and humidity range tested and that the CZT sensors retain their energy resolution of 5.4 keV FWHM at 122 keV and keep the photo-peak position within a margin of plusmn1 keV.

Keywords

application specific integrated circuits; biomedical electronics; gamma-ray detection; gamma-ray production; nuclear electronics; radioactive sources; semiconductor counters; single photon emission computed tomography; ASIC; SPECT; cadmium zinc telluride radiation detector modules; energy resolution; energy spectra; gamma camera; gamma-ray sources; humidity; photopeak position; radiation imaging modules; radiation sources; temperature 15 C to 41 C; Assembly; Cadmium compounds; Cameras; Energy measurement; Energy resolution; Humidity; Radiation detectors; Radiation imaging; Temperature sensors; Zinc compounds;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2007. NSS '07. IEEE

Conference_Location

Honolulu, HI

ISSN

1095-7863

Print_ISBN

978-1-4244-0922-8

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2007.4437315

Filename

4437315