Design of high-performance CdZnTe quasi-hemispherical gamma-ray CAPture plus detectors

Derek S. Bale; Csaba Szeles

doi:10.1117/12.683702

21 September 2006 Design of high-performance CdZnTe quasi-hemispherical gamma-ray CAPture plus detectors

Derek S. Bale, Csaba Szeles

Proceedings Volume 6319, Hard X-Ray and Gamma-Ray Detector Physics and Penetrating Radiation Systems VIII; 63190B (2006) https://doi.org/10.1117/12.683702
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

In this paper we report on the simulation, design, and testing of high performance CdZnTe quasi-hemispherical CAPture^TM Plus radiation detectors. Quasi-hemispherical CdZnTe detectors offer a cost effective alternative to other single-polarity (electron-only) detector configurations such as co-planar grid, pixilated or Frish ring CdZnTe detectors with comparable energy resolution both in the high (>500 keV) and low energy range (<500 keV). We have used the device simulation package eVDSIM to design optimal electrode geometry together with the necessary material selection criteria for charge transport properties of the CdZnTe crystals. A test set of 10x10x5mm³ CAPture^TM Plus detectors has been built using state-of-the art fabrication technology. The measured spectral and efficiency performance of these detectors is compared to the theoretical predictions of simulation. Our results demonstrate that with careful selection of uniform material and high-quality fabrication, this design of CAPture^TM Plus detectors is capable of regularly achieving FWHM @ 81keV of 5%, FWHM @ 122keV of <3%, and FWHM @ 662keV of <2%.

Citation Download Citation

Derek S. Bale and Csaba Szeles "Design of high-performance CdZnTe quasi-hemispherical gamma-ray CAPture plus detectors", Proc. SPIE 6319, Hard X-Ray and Gamma-Ray Detector Physics and Penetrating Radiation Systems VIII, 63190B (21 September 2006); https://doi.org/10.1117/12.683702

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available