PHOTON MULTIPLICITY DETECTOR

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PHOTON MULTIPLICITY DETECTOR (PMD) for STAR _at_
BNL and ALICE _at_ CERN
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THE PMD TEAM
JAMMU CHANDIGARH JAIPUR

• Institute of Physics, Bhubaneswar
• Panjab University, Chandigarh
• Rajasthan University, Jaipur
• Jammu University, Jammu
• Variable Energy Cyclotron Center, Kolkata

KOLKATA (Calcutta)
BHUBANESWAR
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PMD in STAR
Pb
P R R S H O W E R

• Gas detector with hexagonal cells
• Cell cross section 1.0 cm2, depth 0.8 cm
• Total no. of cells 82,944
• Distance from vertex 550cm
• h Coverage 2.3 3.9
• Area of the detector 4.2m2

V E T O
Side view
Front View
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PMD in STAR
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PMD installation Details
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How will PMD look?
Veto Preshower
FRONT VIEW
CROSS SECTION
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Modular Design of PMD
UNITMODULE
SUPERMODULE
UNIT CELL
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Test Beam Results with 96 cell prototype
With pions
Electron Preshower
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PMD Unit Module Prototype
Components of Unit module
Honeycomb under fabrication
576 cell Unit module
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Support Mechanism of PMD
Run Time Configuration
Split view