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Paper   IPM / Particles / 9459
School of Particles and Accelerator
  Title:   Design, performance, and calibration of the CMS hadron-outer calorimeter
  Author(s): 
1.  Majid Hashemi
2.  Mojtaba Mohammadi Najafabadi
3.  Saeid Paktinat
  Status:   Published
  Journal: Eur. Phys. J. C
  Vol.:  57
  Year:  2008
  Pages:   653-663
  Supported by:  IPM
  Abstract:
The Outer Hadron Calorimeter (HCAL HO) of the CMS detector is designed to measure the energy that is not contained by the barrel (HCAL HB) and electromagnetic (ECAL EB) calorimeters. Due to space limitation the barrel calorimeters do not contain completely the hadronic shower and an outer calorimeter (HO) was designed, constructed and inserted in the muon system of CMS to measure the energy leakage. Testing and calibration of the HO was carried out in a 300 GeV/c test beam that improved the linearity and resolution. HO will provide a net improvement in missing ET measurements at LHC energies. Information from HO will also be used for the muon trigger in CMS.


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