Study of possible scintillation mechanism damage in crystals after pion irradiation

✍ Scribed by V.A. Batarin; J. Butler; T.Y. Chen; A.M. Davidenko; A.A. Derevschikov; Y.M. Goncharenko; V.N. Grishin; V.A. Kachanov; A.S. Konstantinov; V.I. Kravtsov; V.A. Kormilitsin; Y. Kubota; V.S. Lukanin; Y.A. Matulenko; Y.M. Melnick; A.P. Meschanin; N.E. Mikhalin; N.G. Minaev; V.V. Mochalov; D.A. Morozov; L.V. Nogach; A.V. Ryazantsev; P.A. Semenov; V.K. Semenov; K.E. Shestermanov; L.F. Soloviev; S. Stone; A.V. Uzunian; A.N. Vasiliev; A.E. Yakutin; J. Yarba

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 226 KB
• Volume: 540
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2004.11.015

✦ Synopsis

We employed two independent methods to study possible damage to the scintillation mechanism in lead tungstate crystals due to irradiation by a 34 V pion beam. Firstly 10 crystals were irradiated simultaneously over 30 h by a narrow beam, so that only a small region of each crystal was affected. We studied the effect of the irradiation on the light output non-uniformity. If a localized degradation was observed, it would indicate damage to the scintillation mechanism. Secondly, we detected light output using two phototubes attached to the sides of a crystal. Since these phototubes detect scintillation light only from a small localized region, the effect of transmission loss should be