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Innovative Detector Design for SoLID with Enhanced Functionality

A large-angle EC detector with 2 sectors, 33 layers each, totaling 19 m2 area, using 0.2 cm thick lead and 1.5 cm thick scintillator of various lengths (2.2-4.5m). This design could potentially be adapted for SoLID, considering ways to cut it into smaller sections, implement preshower/shower stacks, and use clear or WLS fibers for readouts. Concerns include section size, readout channels, radiation hardness, performance, and cost compared to module prices.

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Innovative Detector Design for SoLID with Enhanced Functionality

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  1. CLAS Large Angle EC • 2 sectors, 33 layers each, 19 m2 total area • 0.2cm (0.35X0) thick lead • 1.5cm thick scintillator,10cm wide, various length (2.2-4.5m)

  2. Can it be used for SoLID? • Possible way to do it • Total area similar • cut it into small sections and hold the structure • Separate preshower/shower stacks • Use clear fibers on side of scintillators for readout or use WLS fibers for readout • Concerns • Due to high rate, how small do the sections need to be? How many number of readout channel we can save? • Radiation hardness could be less (need 500krad) • Performance could be worse (need 100:1 rejection) • Cost? (comparing to about $2.5M for module)

  3. Other things • Use scintillator for pad preshower • Use lead layer for pad preshower • 318 EMI Thorn EMI 9954A 2” PMT • Any fiber to use?

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