First operation of a hybrid photon detector prototype with electrostatic cross-focussing and integrated silicon pixel readout

被引：31

作者：

Alemi, M

Campbell, M

Gys, T ^{[1
]}

Mikulec, B

Piedigrossi, D

Puertolas, D

Rosso, E

Schomaker, R

Snoeys, W

Wyllie, K

机构：

[1] CERN, Div EP, CH-1211 Geneva, Switzerland

[2] Univ Milan, I-20122 Milan, Italy

[3] Ist Nazl Fis Nucl, Sect Rome, Rome, Italy

[4] Delft Elect Prod BV, Roden, Netherlands

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2000年 / 449卷 / 1-2期

关键词：

hybrid photon detectors; semiconductor detectors; energy loss; stopping power; electron optics;

D O I：

10.1016/S0168-9002(99)01448-5

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We report on the first operation of a hybrid photon detector prototype with integrated silicon pixel readout for the ring imaging Cherenkov detectors of the LHCb experiment. The photon detector is based on a cross-focussed image intensifier tube geometry where the image is de-magnified by a factor of 4. The anode consists of a silicon pixel array, bump-bonded to a binary readout chip with matching pixel electronics. The prototype has been characterized using a low-intensity light-emitting diode operated in pulsed mode. Its performance in terms of single-photoelectron detection efficiency and imaging properties is presented. A model of photoelectron detection is proposed, and is shown to be in good agreement with the experimental data. It includes an estimate of the charge signal generated in the silicon detector, and the combined effects of the comparator threshold spread of the pixel readout chip, charge sharing at the pixel boundaries and back-scattering of the photoelectrons at the silicon detector surface. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：48 / 59

页数：12

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