An ISPA-camera for gamma rays

被引：16

作者：

Puertolas, D

Piedigrossi, D

Pani, R

Leutz, H

Gys, T

deNotaristefani, F

DAmbrosio, C

机构：

[1] UNIV ROMA LA SAPIENZA, DEPT EXPTL MED, I-00185 ROME, ITALY

[2] IST NAZL FIS NUCL, SECT ROME, ROME, ITALY

[3] UNIV ROME 3, ROME, ITALY

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 1995年 / 42卷 / 06期

关键词：

D O I：

10.1109/23.489418

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：

With the recently developed ISPA (Imaging Silicon Pixel Array)-tube attached either to a planar YAlO3(Ce) (YAP) disc (1 mm thick) or to a matrix of optically-separated YAP-crystals (5 mm high, 0.6 x 0.6 mm(2) cross-section) we achieved high spatial resolution of Co-57-122 keV photons, The vacuum-sealed ISPA-tube is only 4 cm long with 3.5 cm diameter and consists of a photocathode viewed at 3 cm distance by a silicon pixel chip, directly detecting the photoelectrons. The chip-anode consists of 1024 rectangular pixels with 75 mu m x 500 mu m edges, each bump-bonded to their individual front-end electronics, The total pixel array read-out time is 10 mu s. The measured intrinsic spatial resolutions (FWHM) of this ISPA-camera are 700 mu m (planar YAP) and 310 mu m (YAP-matrix), Apart from its already demonstrated application for particle tracking with scintillating fibers, the ISPA-tube provides also an excellent tool in medicine, biology, and chemistry.

引用

页码：2221 / 2228

页数：8

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