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Beam test of signal cross-talk and transmission for LMPRC

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arxiv 1101.0224 v1 pith:2QUHOPSJ submitted 2010-12-31 physics.ins-det hep-ex

Beam test of signal cross-talk and transmission for LMPRC

classification physics.ins-det hep-ex
keywords areachambercross-talkdetectorlmrpcmulti-gapplateprototype
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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A new prototype of large area Multi-gap Resistive Plate Chamber (MRPC) with long readout strips was built. This Long-strip Multi-gap Resistive Plate Chamber (LMRPC) is double stacked and has ten 250 $\mu$m-thick gas gaps. Signals are read out from two ends of strip with an active area of 50 cm$\times$2.5 cm in each. The detector was tested at FOPI in GSI, using the secondary particles of proton beams ($E = 3.5 GeV$) colliding with a Pb target. The results show that the LMRPC prototype has a time resolution of about 60$\sim$70 ps; the detecting efficiency is over 98% and the ratio of cross-talk is lower than 2%. The detector also has a good spatial resolution of 0.36 cm along the strip direction.

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