Design and Construction of the High Threshold \v{C}erenkov Counter Mirror Assembly for the CLAS12 detector at JLab

ORAL

Abstract

An overview is presented of the design and construction of the High Threshold \v{C}erenkov Counter (HTCC) mirror assembly to be placed in the forward region of the CLAS12 detector at the Thomas Jefferson National Accelerator Facility (JLab). The $\mathrm{CO}_2$ gas HTCC has a pion momentum threshold of $4.9\;\mathrm{GeV}/c$, and will provide improved pion-electron separation at the higher engeries that will be produced after the JLab 12 GeV upgrade is complete. The location of the HTCC in the forward detector requires that it be built with a minimal amount of material to limit the contamination of the momentum resolution due to multiple scattering events. This talk will demonstrate how this was achieved by using low mass composites. Also presented will be highlights of the innovative geometry of the design as well as the manufacturing process being implemented in order to maximize quality control.

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Authors

  • Harneet Grewal

    CSU Dominguez Hills

  • John Price

    CSU Dominguez Hills

  • G.V. Brown

    Department of Physics at CSU, Fresno, Lawrence Livermore National Laboratory, Stanford University, Advanced Light Source, Lawrence Berkeley National Lab, Nanoelectronics Research Institute, Japan Atomic Energy Agency, University of Tokyo, Cornell University, Tokyo Institute of Technology, Suranaree University of Technology, Shandong University, Stanford Synchrotron Radiation Lightsource, UC Davis, CSU Dominguez Hills, Thomas Jefferson National Accelerator Facility, UC Berkeley, ANL, UChicago/ANL, UManitoba, Northwestern U/ANL, LLNL, UCB/LLNL, McGill U, McGill U/ANL, University of Nevada, Reno, Hitachi Global Storage Technology, Advanced Light Source, Stanford Synchrotron Radiation Laboratory, Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Materials Science and Engineering, Stanford University, Radiation Oncology, Stanford University School of Medicine, Missouri University of Science and Technology, International Institute of Physics, University of Missouri, University of Notre Dame du Lac, Department of Physics, California State University, Fresno, California, California State University Long Beach, BNL, IWF Dresden, Department of Physics, University of California, Davis, CA 95616, USA, University of California, Merced, Laboratoire Univers et Particules de Montpellier, IN2P3 (France), SLAC National Accelerator Laboratory/Stanford University/KIPAC, University of Perugia, University of Washington, CEA/Saclay, UNR, UNM, UCSD, RAL, ILE, MIT, LANL, LLE, NRL, SLAC National Accelerator Laboratory, Technische Universitaet Berlin, Max Born Institut, Hiroshima University, Western Michigan University, MPIK