The CLAS Forward Electromagnetic Calorimeter

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The CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab utilizes six iron-free superconducting coils to provide an approximately toroidal magnetic field. The six sectors are instrumented individually to form six independent spectrometers. The forward region (8deg < (theta) < 45deg) of each sector is equipped with a lead-scintillator electromagnetic sampling calorimeter (EC), 16 radiation lengths thick, using a novel triangular geometry with stereo readout. With its good energy and position resolution, the EC is used to provide the primary electron trigger for CLAS. It is also used to reject pions, reconstruct pi-0 and eta decays and detect neutrons, This paper ... continued below

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2571 Kilobytes pages

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Amarian, M.; Asryan, Geram; Beard, Kevin; Brooks, Will; Burkert, Volker; Carstens, Tom et al. May 1, 2001.

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The CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab utilizes six iron-free superconducting coils to provide an approximately toroidal magnetic field. The six sectors are instrumented individually to form six independent spectrometers. The forward region (8deg < (theta) < 45deg) of each sector is equipped with a lead-scintillator electromagnetic sampling calorimeter (EC), 16 radiation lengths thick, using a novel triangular geometry with stereo readout. With its good energy and position resolution, the EC is used to provide the primary electron trigger for CLAS. It is also used to reject pions, reconstruct pi-0 and eta decays and detect neutrons, This paper treats the design, construction and performance of the calorimeter.

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2571 Kilobytes pages

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  • Journal Name: Nucl.Instrum.Meth.A; Journal Volume: 460; Other Information: Submitted to Nucl.Instrum.Meth.A, Volume 460

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  • Report No.: JLAB-PHY-00-28
  • Report No.: DOE/ER/40150-1998
  • Grant Number: FG02-97ER41018
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 791621
  • Archival Resource Key: ark:/67531/metadc735191

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  • May 1, 2001

Added to The UNT Digital Library

  • Oct. 19, 2015, 7:39 p.m.

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  • Feb. 5, 2016, 8:42 p.m.

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Amarian, M.; Asryan, Geram; Beard, Kevin; Brooks, Will; Burkert, Volker; Carstens, Tom et al. The CLAS Forward Electromagnetic Calorimeter, article, May 1, 2001; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc735191/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.