The first 900 four-anode Photomultiplier Tubes (PMTs) have been evaluated for use in the 2013 Hadronic Forward (HF) calorimeter upgrade. HF is a part of the Compact Muon Solenoid (CMS), which is one of the two large general-purpose particle detectors of the Large Hadron Collider (LHC) at CERN in Geneva, Switzerland. HF requires 1728 PMTs. These small tubes are the sensitive light detectors that provide the output signals of HF. Before installing PMTs in HF, their quality control demands need to be satisfied. These tests, done at the University of Iowa, are designed in three categories to test seventeen different parameters for each PMT. The three most basic and most important groups of parameters are: dark current, gain (anode and cathode), and timing. There are secondary tests which are performed on a smaller percentage of the PMTs such as surface uniformity, double pulse and single photo-electron resolution. The PMTs that meet the specifications of HF will be sent to CERN where they are expected to be in use for at least a decade.
Thesis
Characterization of 900 four-anode photomultiplier tubes for use in 2013 hadronic forward calorimeter upgrade
University of Iowa
Master of Science (MS), University of Iowa
Summer 2012
DOI: 10.17077/etd.5v5ouhxg
Free to read and download, Open Access
Abstract
Details
- Title: Subtitle
- Characterization of 900 four-anode photomultiplier tubes for use in 2013 hadronic forward calorimeter upgrade
- Creators
- Emrah Tiras - University of Iowa
- Contributors
- Yasar Onel (Advisor)Jane M. Nachtman (Committee Member)Edwin Norbeck (Committee Member)
- Resource Type
- Thesis
- Degree Awarded
- Master of Science (MS), University of Iowa
- Degree in
- Physics
- Date degree season
- Summer 2012
- Publisher
- University of Iowa
- DOI
- 10.17077/etd.5v5ouhxg
- Number of pages
- viii, 49 pages
- Copyright
- Copyright 2012 Emrah Tiras
- Language
- English
- Description illustrations
- col. illustrations, charts
- Description bibliographic
- Includes bibliographical references (page 49).
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9983777050002771
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