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A N DY Status Commissioning with colliding beams (p  +p  at s=500 GeV)

A N DY Status Commissioning with colliding beams (p  +p  at s=500 GeV). L.C.Bland, for AnDY 15 February 2011 Time Meeting, BNL. Jet Trigger Commissioned on Saturday 12 February. ADC from Berkeley group (“QT”) has FPGA used to form 17-bit sum of 12-bit ADC from each of 32 channels

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A N DY Status Commissioning with colliding beams (p  +p  at s=500 GeV)

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  1. ANDY StatusCommissioning with colliding beams (p+p at s=500 GeV) L.C.Bland, for AnDY 15 February 2011 Time Meeting, BNL

  2. Jet Trigger Commissionedon Saturday 12 February • ADC from Berkeley group (“QT”) has FPGA used to form 17-bit sum of 12-bit ADC from each of 32 channels • 32-bit data from four QT per HCal module transferred to second FPGA board from Berkeley (DSM), where 19-bit sum of four terms is made • Threshold on 19-bit sum is then used as trigger • HCal energy scale still to be determined RHIC clock tick before trigger RHIC clock tick after trigger

  3. Jet Trigger Events • Select from jet-trigger events for HCal “high-tower” to be centered in module • Display for each detector of each module the ADC count as color scale (black=greatest count yellow=lowest count) • Events look “jetty”, as expected

  4. Issues and Plansfor next access possibility and beyond • Resolve a few remaining single-channel issues • Reduce HCal gain • We are in “production” now with a jet trigger >29M jet events recorded since Sunday. • No significant on luminosity at IP6,8 yet • Following access, in coming week… • ECal final calibration • Commission additional triggers

  5. Backup

  6. Schematic of detector for Run-11 • Equipment in place: • HCal is two existing 9x12 modules from E864 (NIM406,227) • ECal are two small lead-glass modules from BigCal at JLab • BBC (from PHOBOS) and ZDC • Preshower is newly constructed scintillator arrays • Goals: • Establish impact of 3IR operation on PHENIX/STAR luminosity • Calibrate HCal • relative gain via cosmic-ray m • absolute energy scale via r,L,KS… • Measure hadronic backgrounds to benchmark simulations • Measure jet analyzing power (Lint~10 / pb, P=50%)

  7. Trigger/DAQ electronics Left/right symmetric HCal Left/right symmetric ECal Blue-facing BBC Left/right symmetric preshower Beryllium vacuum pipe IP2 in January, 2011Run-11 Staging of ANDY See http://hena.lbl.gov/IP2/Business/status/<date> for pictures of progress

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