November 18, 2008 John Haggerty 1 PHENIX In Run 9 John Haggerty Brookhaven National Laboratory

November 18, 2008 John Haggerty 2 Run 9 assumptions PAC recommendation: 3. Longitudinally polarized proton-proton collisions at √s = 500 GeV for 5 weeks to allow beam development and commissioning by C-AD, a first measurement of W boson production in PHENIX, and background studies in STAR.

November 18, 2008 John Haggerty 3 Run 9 planning Run 9 planning is fairly far along Beam Use Proposal and PAC guidance Planning document (TN-427) 200 GeV pp October DC meeting parade of systems December physics/trigger/daq/analysis DC meeting Steve Pate agreed to serve as Spin Coordinator

November 18, 2008 John Haggerty 4 Physics goals at 500 GeV Measure backgrounds under high p T muons Test muon trigger electronics (currently being installed) Measure production cross sections  0,  to p T ~ 30 GeV, J/ ,  Measure A LL for  0,  With 25 pb -1 record W’s in central arm –~500 W + and ~90 W - –First look at A L and cross section

November 18, 2008 John Haggerty 5 Central arm W  Central arms W +  e + ~21 pb W -  e - ~3 pb Modify EMCAL gain Develop analysis Cross section measurement First look at A L

November 18, 2008 John Haggerty 6 Detector issues for 500 GeV running Magnetic field configuration –HBD needs “field free” bucked central field (“+-”) –But momentum resolution in central arms is compromised by reduced field –EC agreement to switch field to “++” after first week of physics running Gain changes in EMCAL (present dynamic range set to 20 GeV); mostly done with laser, should be close at beam startup

November 18, 2008 John Haggerty 7 Upgrade detectors in run 9 Upgrade detectors in Run 9 are partial installations or engineering runs: –HBD –Muon Trigger (MUTR FEE upgrade) –Muon RPC prototype –Absorber in muon arm First goal of upgrade detectors: do no harm

November 18, 2008 John Haggerty 8 HBD HBD.W installed HBD.E scheduled for installation December 16 Will need to gain operational experience with DAQ, HV, monitoring, calibration, analysis “+-” field configuration necessary for HBD operation

November 18, 2008 John Haggerty 9 Muon trigger upgrade Major installation effort under way… will complete North arm MuTr FEE upgrade in this shutdown 3 components MuTr electronics RPC layers Trigger logic RPC3 RPC1

November 18, 2008 John Haggerty 10 RPC prototype Resistive Plate Chambers –Fast response –Good spatial resolution –Low cost, CMS experience Installing prototype sector and electronics Engineering run

November 18, 2008 John Haggerty 11 Muon trigger board VME Interface P1 P0 P2 P3 12 x xcvr Virtex-5 LX110T 2.8Gbit) (MuTr 2.8Gbit) (MuTr 2.8Gbit) (MuTr 2.8Gbit) One board processes four trigger octants (one octant per tile) Testing of prototype late in the run Virtex-5 LX110T (9 fibers per octant) Virtex-5 LX110T Virtex-5 LX110T Virtex-5 LX110T 12 x xcvr 12 x xcvr 12 x xcvr

November 18, 2008 John Haggerty 12 Many other detector repairs/improvements Run 6 ERT turnon 8 kHz DAQ improvements to increase livetime, event rate EMCAL/RICH trigger efficiency improvements DC and PC repairs MUTR high voltage stability Could be some additional small tests/prototypes for upgrades

November 18, 2008 John Haggerty 13 Operational Efficiency Review of operational efficiency at S&T Review July 7-9, 2008 Short summary (from Run 8 d+Au): –50% in vertex cuts (no change expected) –77% uptime (modest improvements possible, but less with development) –89% livetime (slight improvement possible with higher rates)

November 18, 2008 John Haggerty 14 Final days schedule Need to complete MuTrig installation, remove scaffolding; install HBD, RPC prototype Expecting closing up the shield wall beginning of January, 2009 then safety and detector checkout

November 18, 2008 John Haggerty 15 RHIC/PHENIX interaction Magnetic field change “+-” to “++” shortly after physics run begins Tunnel access for RPC3 prototype during startup Optimizing the big three: luminosity, polarization, background Improve communication with MCR (discussion with Lee Hammons)