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Outline. RHIC and STAR STAR Time of Flight (TOF) High and Low Voltage Power Supply Control Interface Daya Bay Detector Physics of Interest PMT testing system: Single Photo-electrons (SPE) Layout Result. Relativistic Heavy Ion Collider (RHIC). Solenoidal Tracker at RHIC (STAR). TOF.

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Outline

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  1. Outline • RHIC and STAR • STAR Time of Flight (TOF) • High and Low Voltage Power Supply • Control Interface • Daya Bay • Detector • Physics of Interest • PMT testing system: Single Photo-electrons (SPE) • Layout • Result Bertrand H.J. Biritz

  2. Relativistic Heavy Ion Collider (RHIC) Bertrand H.J. Biritz

  3. Solenoidal Tracker at RHIC (STAR) TOF Bertrand H.J. Biritz

  4. TOF System • Multi-gap Resistive Plate Chamber (MRPC) was developed by CERN • US and China did R&D on the detector • MRPC modules produced in China and TOF tray assembled in US • Completion date: 2009 • UCLA’s responsibility • High/Low Voltage Power Supplies • Control Interface for Power Supplies Bertrand H.J. Biritz

  5. Power Supplies • High Voltage: • CAEN SY1527LC: 8kV @ 200 A per Channel, 12 Channels Total (19.2 W) • Experimental Physics and Industrial Control System (EPICS) Interface • Low Voltage: • Wiener PL512: 8V @ 20A per Channel, 12 Channels Per Crate, 10 crates (19.2kW) • LabVIEW Interface for 2007 Run • Eventually in EPICS as well Bertrand H.J. Biritz

  6. HV EPICS Bertrand H.J. Biritz

  7. LV LabVIEW Bertrand H.J. Biritz

  8. Bertrand H.J. Biritz

  9. Daya Bay • 3 GWth give • 17.5 GWth in 2010 Bertrand H.J. Biritz

  10. +  2  (1.2 MeV) (prompt) Daya Bay Detector & Signal • + p  D +  (2.2 MeV) (delayed, 30-40 s) 0.3 b 49,000 b • + Gd  Gd*  Gd + ’s (8 MeV) (delayed, 30-40 s) Bertrand H.J. Biritz

  11. Physics of Interest Bertrand H.J. Biritz

  12. Physics of Interest Continued Bertrand H.J. Biritz

  13. PMT Test Stand PMT Test Stand (schematically) Bertrand H.J. Biritz

  14. Steel Box PMT LED PMT Test Stand LabVIEW DAQ Bertrand H.J. Biritz

  15. Single Photo-electron gain = 1.88 x 107 Count 25 fC/bin QADC bins Bertrand H.J. Biritz

  16. THANK YOU Bertrand H.J. Biritz

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