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The PrimEx HyCal Calorimeter. Outline HyCal calorimeter PbW0 4 detectors Resolutions Transition region. A. Gasparian NC A&T State University, Greensboro, NC. 1. The PrimEx HyCal Calorimeter. 1152 PbWO4 individual crystal detectors (70 x 70 cm 2 insertion). - PowerPoint PPT Presentation

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  • 5/10/2010*GlueX Col meeting, A. Gasparian*The PrimEx HyCal Calorimeter A. GasparianNC A&T State University, Greensboro, NCOutline

    HyCal calorimeter PbW04 detectors Resolutions Transition region

    GlueX Col meeting, A. Gasparian

  • 5/10/2010*The PrimEx HyCal Calorimeter 1152 PbWO4 individual crystal detectors (70 x 70 cm2 insertion)GlueX Col meeting, A. Gasparian 576 Lead Glass detectors

    GlueX Col meeting, A. Gasparian

  • 5/10/2010*The HYCAL Calorimeter (Crystal part)GlueX Col meeting, A. Gasparian

    GlueX Col meeting, A. Gasparian

  • Calor-2004, March 30A. Gasparian*PbWO4 Crystal Dimensions Geometrical size:

    20.5 x 20.5 x 180.0 mm3Tolerances (mm):

    20.5 + 0.0 - 0.1 180.0 + 0.3 -0.0Specified Measured

    A. Gasparian

  • Calor-2004, March 30A. Gasparian*PbWO4: Optical Properties

    A. Gasparian

  • **PbWO4: Position Resolution vs. Energy Detector characteristics and resolution have been done in different ways: with secondary electron beam (PS in Hall B); with low intensity tagged photon beam (Hall B tagger) =2.7 mm @ 1. GeV

  • **PbWO4: Position Resolution vs. impact coordinate

  • **Lead-Glass: Position Resolutionvs. Energy =5.6 mm @ 1. GeV

  • **PbWO4: Energy Resolution vs. Energy =2.45% @ 1. GeV

  • **Lead-Glass: Energy Resolution vs. Energy =5.7% @ 1. GeV

  • **Transition Region: PbWO4 - Lead-Glass

  • **Transition Region: PbWO4 - Lead-GlassReconstructed Coordinate

  • **Transition Region: PbWO4 - Lead-GlassReconstructed Coordinate (E = 5.2 GeV)

  • **Transition Region: PbWO4 - Lead-GlassPosition Resolution (E = 5.2 GeV)

  • **Transition Region: PbWO4 - Lead-GlassReconstructed Energy (E = 5.2 GeV)

  • **Transition Region: PbWO4 - Lead-GlassEnergy Resolution (E = 5.2 GeV)

  • 5/10/2010* Sensitivity to Magnetic FieldGlueX Col meeting, A. GasparianPossible modifications:

    change the G10 housing to sift ion housing and extend it to ~1

    insert optical extension

    extend the brass strips (look at different options first)

    No need to change the optical wrapping The current design do not have extended -metal on photocathode Try to shield the FCAL frame with some -metal, if it is all possible

    GlueX Col meeting, A. Gasparian

  • 5/10/2010* Summary The Hybrid Calorimeter concept have been successfully reapproved with the HyCal calorimeter in the PrimEx experiment.

    Technical and methodical aspects of the Hybrid calorimeter are well understood and tested. On-site expertise is available.

    HyCal is equipped with ~2000 channel power supply (CAEN) unit; Trigger and analog electronics are old.

    1152 PbWO4 high resolution, radiation hard crystal detectors are available for future experiments.

    HyCal will stay in Hall B up to the end of PrimEx-II experiment.GlueX Col meeting, A. Gasparian

    GlueX Col meeting, A. Gasparian

  • 5/10/2010*A. GasparianGlueX Col meeting, A. Gasparian*The End

    GlueX Col meeting, A. Gasparian

  • **Invariant Mass ResolutionPbWO4onlyPb-Glassonly

    A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008A. Gasparian, Hall D, May 9, 2008**A. Gasparian, Hall D, May 9, 2008A. Gasparian, Hall D, May 9, 2008*A. Gasparian, Hall D, May 9, 2008

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