Stimulation of Radiation Damage Recovery of Lead Tungstate Scintillation Crystals Operating in a High Dose-Rate Radiation Environment

被引：11

作者：

Borisevitch, Andrei E. ^{[1
]}

Dormenev, Valeri I. ^{[2
]}

Fedorov, Andrei A. ^{[1
]}

Korjik, Mikhail V. ^{[1
]}

Kuske, Till ^{[2
]}

Mechinsky, Vitali ^{[1
]}

Missevitch, Oleg V. ^{[1
]}

Novotny, Rainer W. ^{[2
]}

Rusack, Rodger ^{[3
]}

Singovski, Alexander V. ^{[3
]}

机构：

[1] Inst Nucl Problems, Minsk 220012, BELARUS

[2] Univ Giessen, Inst Phys 2, D-35392 Giessen, Germany

[3] Univ Minnesota, Minneapolis, MN 55455 USA

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2013年 / 60卷 / 02期

关键词：

radiation effects; radiation effects in microelectronics: radiation hardening; OPTICAL-TRANSMISSION;

D O I：

10.1109/TNS.2013.2243164

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：

Scintillation crystals of the lead tungstate family PWO, PWO-II-became widely used in electromagnetic calorimeters in high energy physics experiments at high-luminosity accelerator facilities. During the operation of electromagnetic calorimeters a degradation of the optical transmission of these crystals occurs due to creation of color centers. In addition to the recharge by gamma-radiation of the point structure defects, which exist a priori in the crystals, additional damage occurs to the crystal matrix due to the interaction of hadrons. Thus radiation induced optical absorption can limit the energy resolution of the calorimeter. To reduce the recharge by gamma-radiation we have both minimized the concentration of point structure defects during manufacture, and used light from visible to infrared to stimulate the recovery of the color centers. In this paper we show that method of stimulated recovery is also applicable to recover from degradation of the crystal's optical transmission caused by hadron interactions. The mechanisms of the damage under gamma- and hadron-irradiation are discussed.

引用

页码：1368 / 1372

页数：5

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