Improvement of several properties of lead tungstate crystals with different doping ions

被引：79

作者：

Auffray, E

Lecoq, P ^{[1
]}

Korzhik, M

Annenkov, A

Jarolimek, O

Nikl, M

Baccaro, S

Cecilia, A

Diemoz, M

Dafinei, I

机构：

[1] CERN, Geneva, Switzerland

[2] Inst Nucl Problems, Minsk, BELARUS

[3] Bogoroditsk Technochem Plant, Bogoroditsk, Russia

[4] CRYTUR, Turnov, Czech Republic

[5] Inst Phys, Prague, Czech Republic

[6] ENEA, INN, TEC, IRR Casaccia Res Ctr, Rome, Italy

[7] Ist Nazl Fis Nucl, Sez Roma 1, Rome, Italy

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1998年 / 402卷 / 01期

关键词：

D O I：

10.1016/S0168-9002(97)01088-7

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A very good radiation resistance of lead tungstate crystals is mandatory for their use in the high-precision electromagnetic calorimeter of the CMS experiment at LHC. Since the beginning of 1996 we have organised systematic investigations of the parameters influencing the radiation hardness of this crystal. Two classes of parameters have been particularly studied, the first one related to the control of the stoichiometry and structure-associated defects, the second one connected with the suppression and the charge compensation of existing defects with different kinds of doping ions. This paper reports about the second part of this study and complements a first paper where the role of the stoichiometry was already discussed. Results of tests are given on a significant statistical sample of full size crystals (23 cm) which show a considerable improvement in the optical properties and the radiation resistance of appropriately doped crystals.

引用

页码：75 / 84

页数：10

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