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Summary: 734 IEEE TRANSACTIONS ON NUCLEAR SCIENCE, VOL. 55, NO. 2, APRIL 2008
CMS Hadronic EndCap Calorimeter Upgrade
Studies for SLHC " Cerenkov Light Collection
From Quartz Plates"
F. Duru, U. Akgun, E. A. Albayrak, A. S. Ayan, P. Bruecken, E. Norbeck, J. Olson, Y. Onel, D. Winn, and
L. Cremaldi
Abstract--Due to an expected increase in radiation damage
under super-LHC conditions, we propose to substitute the scin-
tillator tiles in the original design of the hadronic endcap (HE)
calorimeter with quartz plates. Quartz is shown to be radiation
hard. Using wavelength shifting fibers, it is possible to collect
efficiently the Cerenkov light generated in quartz plates. This
paper summarizes the results from various test beams, bench
tests, and Geant4 simulations done on methods of collecting light
from quartz plates, as well as radiation hardness tests on quartz
material.
Index Terms-- Cerenkov detectors, Cerenkov radiation, quartz.
I. INTRODUCTION
THE Large Hadron Collider (LHC) is designed to provide
14 TeV center of mass energy with proton proton colli-
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