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    Detector Seminar

    FGLD: a Novel and Compact Micro-pattern Gas Detector

    by David A. Watts (CERN-PH/ED)

    → Europe/Zurich
    13/2-005 (CERN)

    13/2-005

    CERN

    90
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    Description
    A new gas detector which combines in the same structure the gas amplification mechanism and the position sensitive readout, named the FGLD (Field Gradient Lattice Detector), is being developed in CERN‚s printed circuit workshop. A 3D FGLD detector has been successfully fabricated as copper tracks at a pitch of 150µm on polyimide film using modern photolithographic techniques. The result is a flexible gas detector which provides low capacitance, 3 readout axes, and multi-stage amplification in only 100µm thickness. A proof of concept design having no position sensitivity has been tested in a 3mm drift chamber containing an argon carbon-dioxide gas mixture and an Fe55 source. Preliminary results of the detector‚s gain characteristics and aging will be presented along with a discussion of current developments to build an FGLD detector with position sensitivity.
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