A preshower photon multiplicity detector for the WA93 experiment

被引：26

作者：

Aggarwal, MM

Badyal, SK

Bhalla, KB

Bhatia, VS

Chattopadhyay, S

Das, AC

Devanand

Majumdar, MRD

Ganti, MS

Garcha, BS

Ghosh, TK

Gupta, SK

Gutbrod, HH

Kachroo, S

Kolb, BW

Kumar, V

Langbein, I

Loknathan, S

Mittra, IS

Mookerjee, S

Nayak, SK

Purschke, ML

Raniwala, S

Rao, MN

Rao, NK

Sambyal, SS

Schmidt, HR

Sinha, BC

Trivedi, MD

Viyogi, YP

机构：

[1] BHABHA ATOM RES CTR,CTR VARIABLE ENERGY CYCLOTRON,CALCUTTA 700064,W BENGAL,INDIA

[2] PANJAB UNIV,CHANDIGARH 160014,INDIA

[3] UNIV JAMMU,JAMMU 180001,INDIA

[4] UNIV RAJASTHAN,JAIPUR 302004,RAJASTHAN,INDIA

[5] GESELL SCHWERIONENFORSCH INST DARMSTADT,D-64220 DARMSTADT,GERMANY

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1996年 / 372卷 / 1-2期

关键词：

D O I：

10.1016/0168-9002(96)83269-4

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A fine granularity preshower detector has been designed, fabricated and installed in the WA93 experiment for the first ever measurement of photon multiplicity in ultra-relativistic heavy ion collisions. Photons are counted by detecting the preshower signal in plastic scintillator pads placed behind a lead converter and applying a threshold on the scintillator signal to reject the minimum ionizing particles. The photon detection efficiency estimated using Monte-Carlo and beam test results is found to be similar to 65-75% depending on centrality. Simulation and performance results of the detector for counting of photons and rejection of hadrons in the large multiplicity environment of ultra-relativistic heavy ion collisions are described.

引用

页码：143 / 159

页数：17

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