Position-sensitive avalanche photodiodes for gamma-ray imaging

被引：89

作者：

Shah, KS ^{[1
]}

Farrell, R ^{[1
]}

Grazioso, R ^{[1
]}

Harmon, ES ^{[1
]}

Karplus, E ^{[1
]}

机构：

[1] Radiat Monitoring Devices Inc, Watertown, MA 02472 USA

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2002年 / 49卷 / 04期

关键词：

avalanche photodiode; imaging; nuclear; position-sensitive detector;

D O I：

10.1109/TNS.2002.801510

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：

In this paper, we report on the investigation of silicon avalanche photodiodes (APDs) for high-energy photon imaging applications. This includes a new APD design that provides X-ray and gamma-ray imaging with significant reduction in electronic readout requirements. This new APD design, referred to as position-sensitive avalanche photodiode (PSAPD), involves charge sharing amongst the electrodes that enable determination of position of interaction. PSAPDs with 14 x 14 mm(2) area have been fabricated using planar processing. The performance of these devices has been evaluated for energy resolution, timing resolution (4 ns full-width at half-maximum), and spatial resolution (similar to300 mum intrinsic spatial resolution). The potential of these APDs in high-energy physics and medical imaging is addressed.

引用

页码：1687 / 1692

页数：6

共 8 条

[1] POSITION SENSING BY CHARGE DIVISION [J].