Journal article
CMS Hadronic Endcap Calorimeter Upgrade Studies for SLHC "P-Terphenyl Deposited Quartz Plate Calorimeter Prototype"
IEEE transactions on nuclear science, Vol.57(2), pp.754-759
04/2010
DOI: 10.1109/TNS.2010.2040038
Abstract
The Large Hadron Collider (LHC) is going to start taking data with 10 33 cm -2 s -1 luminosity, and reach the designed value of 10 34 cm -2 s -1 in 2013. The LHC luminosity will continue to improve each year, reaching to 10 35 cm -2 s -1 in 2023. We call this high luminosity era the Super-LHC (SLHC). Hadronic Endcap (HE) calorimeters of the CMS experiment cover the pseudorapidity range of 1.4 ≪ η ≪ 3 on both sides of the CMS detector, contributing to superior jet and missing transverse energy resolutions. As the integrated luminosity of the LHC increases, the scintillator tiles used in the CMS Hadronic Endcap calorimeter will lose their efficiency. The CMS collaboration plans to substitute Quartz plates for the scintillator tiles of the original design. Various tests have proved Quartz to be radiation hard, but the light produced by Quartz comes from Cerenkov process, which yields drastically fewer photons than scintillation. To increase the light collection efficiency, we propose to treat the Quartz plates with radiation hard wavelength shifters, p-terphenyl or 4% gallium doped zinc oxide. The test beam studies revealed a substantial light collection increase on pTp or ZnO:Ga deposited Quartz plates. We constructed a 20 layer calorimeter prototype with pTp coated plates, and tested the hadronic and the electromagnetic capabilities at the CERN H2 area. Here we report the results of these test beams as well as radiation damage studies performed on p-Terphenyl.
Details
- Title: Subtitle
- CMS Hadronic Endcap Calorimeter Upgrade Studies for SLHC "P-Terphenyl Deposited Quartz Plate Calorimeter Prototype"
- Creators
- Ugur Akgun - University of IowaElif A Albayrak - University of IowaGural Aydin - University of IowaBurak Bilki - University of IowaPeter Bruecken - University of IowaKerem Cankocak - University of IowaWarren Clarida - University of IowaLucien Cremaldi - University of MississippiFirdevs Duru - University of IowaAnthony Moeller - University of IowaAlexi Mestvirishvili - University of IowaYasar Onel - University of IowaFerhat Ozok - University of IowaJustin Parsons - University of IowaDavid Sanders - University of MississippiNasuf Sonmez - Ege UniversityJames Wetzel - University of IowaDavid Winn - Fairfield UniversityTaylan Yetkin - University of Iowa
- Resource Type
- Journal article
- Publication Details
- IEEE transactions on nuclear science, Vol.57(2), pp.754-759
- Publisher
- IEEE
- DOI
- 10.1109/TNS.2010.2040038
- ISSN
- 0018-9499
- eISSN
- 1558-1578
- Language
- English
- Date published
- 04/2010
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199722202771
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