Summary: Radiation-Hard Quartz Cerenkov Calorimeters
U. Akgun and Y. Onel (for CMS Collaboration)
Department of Physics and Astronomy, The University of Iowa,
203 Van Allen Hall, Iowa City, IA, 52242, USA
Abstract. New generation hadron colliders are going to reach unprecedented energies and radiation
levels. Quartz has been identified as a radiation-hard material that can be used for Cerenkov
calorimeters of the future experiments. We report from the radiation hardness tests performed on
quartz fibers, as well as the characteristics of the quartz fiber and plate Cerenkov calorimeters that
have been built, designed, and proposed for the CMS experiment.
Keywords: Quartz, Cerenkov, calorimeter, radiation.
PACS: 07.20.Fw, 29.40.Vj, 42.70.Ce,
The future colliders are going to reach unprecedented energies and the experiments
will experience huge particle fluxes. This requires developing and using radiation hard
detector system technologies. For the CMS Forward Calorimeter (HF) we have used
quartz fibers as the active material, in light of a series of radiation-hardness tests
performed on quartz fibers. We report results from these tests.
In this paper we summarize the test beam results on Pre-Production Prototype
(PPP-1) and HF, as well as the Geant4 simulations. The CMS detector has the
CASTOR calorimeter behind HF to cover the forward region better. CASTOR has