Optical coupling materials are usually applied to ensure good optical matching in the APD-scintillating crystal detection system. High transparency at the scintillating emission wavelength and material stability under irradiation are recommended requirements. In this work, silicon optical grease (BC630) and two-component epoxy resins (Epo-tek 301-2FL and Epo-tek 305), to be employed in the electromagnetic calorimeter of the BelleII experiment at the Super-KEKB collider, were investigated to establish their radiation hardness and stability under gamma and neutron irradiation. Optical transmittance measurements were performed in the UV-VIS range, paying particular attention to the materials behavior in the range around 315nm (CsI scintillating emission wavelength). © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
|Titolo:||Radiation hardness and stability of optical coupling materials for BelleII electromagnetic calorimeter|
|Data di pubblicazione:||2014|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|