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Overview of Hardware R&D

Overview of Hardware R&D. George Lolos University of Regina GlueX Meeting, Glasgow, August 4, 2003. Outline. BCAL R&D Progress at Regina Regina plans for 2004 FSU MoU IU R&D. BCAL R&D Progress at Regina. 2-m long, 17-cm thick module completed Light transmission testing under way

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Overview of Hardware R&D

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  1. Overview of Hardware R&D George Lolos University of Regina GlueX Meeting, Glasgow, August 4, 2003

  2. Outline • BCAL R&D Progress at Regina • Regina plans for 2004 • FSU MoU • IU R&D

  3. BCAL R&D Progress at Regina • 2-m long, 17-cm thick module completed • Light transmission testing under way • HPD/MCP+ circuits ongoing • Ray tracing code complete • GEANT/ROOT progress (tomorrow) • Regina Grid Portal v.1.0 works (tomorrow)

  4. 2-m Module Gallery - 1 Now that’s a toilet paper roll!

  5. 2-m Module Gallery - 2 No we have no bananas.

  6. 2-m Module Gallery - 3 Hair salon? Combs nonetheless!

  7. 2-m Module Gallery - 4 All that glue for GlueX.

  8. 2-m Module Gallery - 5 Machined to perfection.

  9. 2-m Module Gallery - 6 … but on closer look:

  10. 2-m Module Gallery - 7 The Great White North

  11. 2-m Module Gallery - 8 The Canuck Crew.

  12. Next Steps for Pb/SciFi • 2-m testing with cosmics and beam (Hall B?) • 1-m prototype with Scint sheets (IU). • 4-m prototype construction at CSR/UofA • MOU with UofA signed. • 100-km fibers ordered, Pb and glue. • Softer Pb being ordered from Vulcan • 4.5-m press in design stage • Spooling apparatus R&D • Clean room facilities at UofA being setup • Timetable: completion June 2004

  13. HPD/MCP Electronics • HPDs • Limitations in timing resolution • New preamp/shaper from Cremat • Collaboration with P. Smith (IU) • MCP and other devices (under study) • Conventional PMTs?

  14. Ray Tracing in Fibers • Objective: • find light transmission, timing resolution • Compare air vs. glue “cladding” • ncore=1.59, ninner=1.49, nouter=1.42 • Photons: random origin and direction • Geometry and Electrodynamics • Compare to reflection coefficient • Tally escaped s, calculate traversal time for others

  15. Ray Tracing Results - 1 Transmission: 58.1%

  16. Ray Tracing Results - 2 Transmission: 12.1%

  17. Ray Tracing Results - 3 Transmission: 57.0%

  18. Ray Tracing Results - 4 Transmission: 21.3%

  19. UPV – FSU MOU • Back angle soft photon detection • Use soft iron to recover uniform B-field • Photons greater than 20 MeV • Photon multiplicity capability • Fast timing and trigger feeding • UPV • 18 layers of 1-cm thick scintillator • Each layer has 7 34cm x 238 cm paddles (x,u,v) • Wavelength shifter, single PMT per paddle • 12 layers of 0.635-cm Pb sheets • 6 layers of 1.270-cm Pb sheets • Construct & Test Fe- and Pb-based module

  20. Particle ID IU R&D

  21. Particle Identification TOF tests in Russia - Serpukhov Magnetic shielding studies Cerenkov counter

  22. TOF Prototype

  23. Magnetic Shielding Helmholtz coils built by undergrads lastyear - upgraded this year new power supplies

  24. Magnetic Shielding

  25. Barrel Calorimeter Dan Krop and IU will build a lead/scintillatorsheet calorimeter module and we will do a direct comparison with scifi/lead design to seeif a less expensive design is feasible. Beam tests will be performed at IHEP This work in conjunction with U of Regina

  26. Barrel Calorimeter

  27. Barrel Calorimeter

  28. Straw-tubes We have made 4 out of 16 endplate pieces, and checked their accuracy. We have purchased 250 1.6 cm diameter straw tubes. We are getting glue samples. We are prototyping feed throughs We are carrying out gas studies using Garfield.

  29. Straw-tubes from Euclid Sample Tubes 250 tubes arrived in 1 week at 50 cents each. (High reject rate.) 10000 rpm 10 mil saw to cut the tubes

  30. Straw-tube Chamber Status The four prototype endplates set up with some straws inserted. The Goal is to put a few hundred tubes in, and then instrument 10s of Channels.

  31. Feed Through’s Hand making each one.

  32. Items under study Conductive epoxies for the straws, looking at both conductivity and gas tightness. Radiation hardness of materials. Gas mixtures for the chamber. Construction techniques.

  33. GigaBit 100Mbit PSC CMU RAID OC48 (2480Mbit/s) Internet 2 ESNET OC3 (155Mbit/s) JLab Network Bandwidth Studies We have carried out a number of tests to see the data rates At which we are able to move large amounts of data from JLab to CMU. Currently can get ~70Mbits/second! Move to GigaBit bottleneck bottleneck Will move to OC12 (620Mbit/s) We can move 1GigaByte of data in ~115 seconds. We can cut this by 2-3 with upgrades.

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