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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoPlainText>Dear All,<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>There is a design and test effort on going in Hall A, to build a detector very similar to our photon rejecting scintillator pad. It consists of scintillator pad, WLS fiber, and maPMT for readout:<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Experiment: Hall A GEP in the SBS program<o:p></o:p></p><p class=MsoPlainText>Spectrometer: BigCal<o:p></o:p></p><p class=MsoPlainText>Purpose: provide electron trigger <o:p></o:p></p><p class=MsoPlainText>Sensitive layer: Scintillator pads with WLS fiber imbedded for readout<o:p></o:p></p><p class=MsoPlainText>PMT: 16 channel maPMT retired from CDF. <o:p></o:p></p><p class=MsoPlainText>Electronics: (still in design) threshold detection with output for trigger and TDCs. Each maPMT channel processed <o:p></o:p></p><p class=MsoPlainText>Talk: <a href="https://sites.google.com/site/ghpworkshop/home/parallel-program#Parallel-Session-3a">https://sites.google.com/site/ghpworkshop/home/parallel-program#Parallel-Session-3a</a> by Adam Sarty<o:p></o:p></p><p class=MsoPlainText>Who to ask for more detail : Bogdan<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>What for SoLID:<o:p></o:p></p><p class=MsoPlainText>* We may copy this design for photon-rejecting scintillator pad for the SIDIS experiment<o:p></o:p></p><p class=MsoPlainText>* There are few hundred 16 channel maPMT left in the pool, which we may borrow or use!<o:p></o:p></p><p class=MsoPlainText>* Proto-type test result that we may cite<o:p></o:p></p><p class=MsoPlainText>* The amplitude/ADC info is not used and not implemented in their electronics, but necessary if we use it for preshower<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Cheers,<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Jin<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>__________________________________________<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Jin HUANG<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Los Alamos National Laboratory<o:p></o:p></p><p class=MsoPlainText>PO Box 1663, MS H846, Los Alamos, NM 87545<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Office:(505) 665-2523, Cell:(757) 604-9946<o:p></o:p></p><p class=MsoPlainText>__________________________________________<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p></div></body></html>