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GRETINA Gamma - ray Tracker Status and EPICS Usage

GRETINA Gamma - ray Tracker Status and EPICS Usage. Carl Lionberger Lawrence Berkeley National Laboratory. GRETINA Intro. Diminutive form of GRETA (Gamma Ray Energy Tracking Array) = ¼ GRETA Developed by same group as Gammasphere

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GRETINA Gamma - ray Tracker Status and EPICS Usage

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  1. GRETINAGamma-rayTrackerStatusandEPICSUsage Carl Lionberger Lawrence Berkeley National Laboratory EPICS Meeting 2005

  2. GRETINA Intro • Diminutive form of GRETA (Gamma Ray Energy Tracking Array) = ¼ GRETA • Developed by same group as Gammasphere • Ge crystals segmented and much closer together than in GS; no BGO separators • 36 segments/crystal • 28 crystals in 7 cryostats • http://grfs1.lbl.gov/ EPICS Meeting 2005

  3. Schedule (Fiscal Years) EPICS Meeting 2005

  4. Data Acquisition system Local Trigger Module Readout Computer Signal Digitizers 2.2 MB/s 66 MB/s Processing Farm Global Trigger Module Network Switch 70 dual Processors 30 Crystals 6.9 MB/s Aux. Det. Trigger Workstations, Servers Aux. Det. Data Data Storage 2.3 MB/s + Aux. Data EPICS Meeting 2005

  5. EPICS Meeting 2005

  6. Status • Testing detectors • Have custom digitizer (VME) • Developing EPICS support • Developing software requirements and algorithms • Cd2a/3a EPICS Meeting 2005

  7. EPICS Meeting 2005

  8. EPICS Meeting 2005

  9. EPICS Meeting 2005

  10. EPICS Meeting 2005

  11. EPICS Meeting 2005

  12. EPICS Status • Drivers • GRETINA Digitizer • CAEN V977 Digital I/O • CAEN V830 Scaler • One test IOC EPICS Meeting 2005

  13. EPICS Tools • Edm • Vdct • CaPython • Sequencer • Channel Archiver • SCA EPICS Meeting 2005

  14. Projected PV count • Global 100– • expect several times increase • Per crate 625 * 28 crates = 17,500 • Might double EPICS Meeting 2005

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