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Test of the SSD Electronics for the STAR HFT Upgrade

Test of the SSD Electronics for the STAR HFT Upgrade. Howard Matis - LBNL. Previous Uses (2007) of Electron Test Beams LBNL’s Advanced Light Source – 1.5 GeV e’s. LHC luminosity monitor. 1.5 GeV electron source (ALS). Quadrant with (left) and without (right) electron source applied.

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Test of the SSD Electronics for the STAR HFT Upgrade

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  1. Test of the SSD Electronics for the STAR HFT Upgrade Howard Matis - LBNL SLAC ESTB Workshop – March 2011

  2. Previous Uses (2007) of Electron Test Beams LBNL’s Advanced Light Source – 1.5 GeV e’s LHC luminosity monitor SLAC ESTB Workshop – March 2011

  3. 1.5 GeV electron source (ALS) • Quadrant with (left) and without (right) electron source applied. Test of MAPS pixel sensor H. Matis (hsmatis@lbl.gov)

  4. Usefulness of the ex-ALS Beam • Easy to schedule time • Flexible use of beam • Lots of setup and debug time • Access detector almost anytime • Good technical support • Platform for mounting apparatus • Trigger counters in line • Not useful for physics experiments • Experts to beam tune • Other wishes • Patch panels • Easy way to have single point ground • Silicon telescope (not sure how to interface it with our system) SLAC ESTB Workshop – March 2011

  5. STAR at BNL is adding an inner tracking detector • Building a 2 layer MAPS detector – very thin with 20 µm pixels (See L. Greiner’s Talk) • A larger Silicon Pixel Detector - IST • A “refurbished” Silicon Strip detector – SSD • Originally designed to run at 1 Hz • Must now run at 1000 Hz SLAC ESTB Workshop – March 2011

  6. SSD upgrade • Detector silicon remains the same • Dual sided silicon • 768 strips/module • 75 mm × 42 mm • 95 µm strip pitch • 35 mrad angle • r-φ= 20 µm; z =740 µm • New • Analog to Digital Readout • RDO – Collector of Digital Data which sends it to DAQ • We need a test beam to verify performance of new electronics SLAC ESTB Workshop – March 2011

  7. Schematic SLAC ESTB Workshop – March 2011

  8. Actual SSD Module Module Before electronics folded Final version SLAC ESTB Workshop – March 2011

  9. Why we want a real beam • Test of electronics with real particles • Proper ionization values • Too often tricked with Fe55 • Good way to measure rate affects • Can trigger on a beam • Efficiency Tests SLAC ESTB Workshop – March 2011

  10. Layout of Test SLAC ESTB Workshop – March 2011

  11. Parameters required for Beam Tests

  12. Not my project SLAC ESTB Workshop – March 2011

  13. UCLA IEP/RHI Group • (Huan Z. Huang, G. Igo, S. Trentalange, O. Tsai) • New R&D for W powder SciFi (scintillating fiber) calorimeters • Possible applications in STAR at RHIC: • STAR forward upgrades • Transformation STAR➞ eSTAR • Dedicated EIC (Electron Ion Collider) detector • Simple to build in a university environment, cost effective, flexible technique to build compact sampling calorimeters. • We plan to have test run in the fall 2011. SLAC ESTB Workshop – March 2011

  14. INTERACTION POINT (June 20, 2003) “Cooperative Spirit of SLAC Pays Off for UCLA Researchers.” Test Run T466 at SLAC • In 2003, tested small • EMC prototype at SLAC • Refined constructiontechnique in 2004 • Scheduled for a test run atSLAC in the fall of 2004 • Test run was postponed • Not able to continue R&D inthis direction • Now ready to resume • This method of building ScFi calorimeters has yet to be proven! • A SLAC Test Beam Facility is very important for calorimetryR&Ds! SLAC ESTB Workshop – March 2011

  15. As a proof of principle, we want to build 4 towers x 4 towers EMC prototype using new technique. We call it “spacardeon” • Each tower will be about 20 rad. length long • a bit more then 1" x1” • If funds available will try toinvestigate possibility of building a “SPACAL” • hadronic calorimeter using W powder/SciFi. Beam SLAC ESTB Workshop – March 2011

  16. Parameters required for Beam Tests SLAC STB Workshop – March 2011

  17. Summary • Test beams have been very useful in the past • Detector R & D • Production of detectors • Lack of test beams in the US • BNL does not have one • ALS stopped providing it • Fermilab? • Jefferson Lab? • CERN is expensive and difficult to use • A SLAC test beam would fill a natural gap • Easy to use for those on the west coast SLAC ESTB Workshop – March 2011

  18. Backup SLAC ESTB Workshop – March 2011

  19. Example. Possible evolution of calorimeters in STAR. Forward direction (West side). Should consider: Available space Magnetic Field Radiation Installation/Integration SLAC ESTB Workshop – March 2011

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