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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 • 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
Relativistic Heavy Ion Collider (RHIC) Bertrand H.J. Biritz
Solenoidal Tracker at RHIC (STAR) TOF Bertrand H.J. Biritz
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
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
HV EPICS Bertrand H.J. Biritz
LV LabVIEW Bertrand H.J. Biritz
Daya Bay • 3 GWth give • 17.5 GWth in 2010 Bertrand H.J. Biritz
+ 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
Physics of Interest Bertrand H.J. Biritz
Physics of Interest Continued Bertrand H.J. Biritz
PMT Test Stand PMT Test Stand (schematically) Bertrand H.J. Biritz
Steel Box PMT LED PMT Test Stand LabVIEW DAQ Bertrand H.J. Biritz
Single Photo-electron gain = 1.88 x 107 Count 25 fC/bin QADC bins Bertrand H.J. Biritz
THANK YOU Bertrand H.J. Biritz