Testing an energy-dispersive counting-mode detector with hard x-rays from a synchrotron source

被引：12

作者：

Baeumer, Christian ^{[1
]}

Martens, Gerhard ^{[2
]}

Menser, Bernd ^{[1
]}

Roessl, Ewald ^{[2
]}

Schlomka, Jens-Peter ^{[2
]}

Steadman, Roger ^{[1
]}

Zeitler, Guenter ^{[1
]}

机构：

[1] Philips Res Europe, D-52066 Aachen, Germany

[2] Philips Res Europe, D-22335 Hamburg, Germany

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2008年 / 55卷 / 03期

关键词：

coincidence; photon counting; pulse pile-up; synchrotron; x-ray detector; x-ray imaging;

D O I：

10.1109/TNS.2008.924083

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A counting-mode line detector has been evaluated at a synchrotron radiation source in order to assess its performance for imaging applications. The x-ray detector is based on 3 mm thick CdZnTe arrays with 1 mm pixel pitch and multi-threshold counting electronics. Data readout has been performed in threshold scan mode to provide maximum energy dispersion. The acquired energy spectra are interpreted regarding the characteristics of a periodic source and pulse pile-up in the detector. In particular, energy response and rate behavior of single-photon and double-photon events are investigated. Count rate dynamics are studied up to incident rates of 2 x 10(6) photons/pixel/s. A further subject of the investigation is the variance of the observed counting rate. Linearity in the energy domain is tested between 40 keV and 140 keV.

引用

页码：1785 / 1790

页数：6

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