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8628402 
Meetings & Symposia 
Radiation hard & high light yield scintillator search for CMS phase II upgrade 
Compact Muon Solenoid Collaboration :: CMS Collaboration 
2020 
SLAC National Accelerator Laboratory 
2015 Meeting of the Division of Particles and Fields of the American Physical Society, DPF 2015 
English 
The CMS detector at the LHC requires a major upgrade to cope with the higher instantaneous luminosity and the elevated radiation levels. The active media of the forward backing hadron calorimeters is projected to be radiation-hard, high light yield scintillation materials or similar alternatives. In this context, we have studied various radiation-hard scintillating materials such as Polyethylene Terephthalate (PET), Polyethylene Naphthalate (PEN), High Efficiency Mirror (HEM) and quartz plates with various coatings. The quartz plates are pure ?erenkov radiators and their radiation hardness has been confirmed. In order to increase the light output, we considered organic and inorganic coating materials such as pTerphenyl (pTp), Anthracene and Gallium-doped Zinc Oxide (ZnO:Ga) that are applied as thin layers on the surface of the quartz plates. Here, we present the results of the related test beam activities, laboratory measurements and recent developments. © DPF 2015.All rights reserved. 
Levin D.