1 / 7

PHENIX Status, 4/19/11

PHENIX Status, 4/19/11. Takao Sakaguchi. p+p physics run ended IR work for 18GeV and 200GeV is in progress VTX maintenance, muon arm maintenance. Integrated luminosity (Final). Goal: 20/pb. Final. 16.7/pb in |z|<30cm, 27.6/pb in wide vertex. Achievement of p+p running.

casey
Download Presentation

PHENIX Status, 4/19/11

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. PHENIX Status, 4/19/11 Takao Sakaguchi • p+p physics run ended • IR work for 18GeV and 200GeV is in progress • VTX maintenance, muon arm maintenance..

  2. Integrated luminosity (Final) Goal: 20/pb Final 16.7/pb in |z|<30cm, 27.6/pb in wide vertex

  3. Achievement of p+p running • W-physics run completed • Longitudinal beam. • W-candidate muons were seen, which are consistent with expectation • Both north and south RPC were brought up into online trigger • VTX is successfully taking data on beam • Took physics data on beam with other detectors. • Data being analyzed to obtain performance (DOE requirement: position resolution, etc,) • Last vernier scan successfully taken on Sunday. Thanks for supporting physics goals of the PHENIX experiments

  4. A Look at Run 11 Muon Data • Tracks triggered with MuID&&BBC&&SG1 • SG1 uses track sagita in Muon Tracker • From first 7.5 pb-1 recorded • Yellow is Run9 • Blue is old trigger (lower due to added absorber) • Purple is SG1 triggered tracks • Green is with RPC • With SG1, we did not need to prescale even at highest rates This dataset gives ~10% to our integrated luminosity goal for the W-physics program.

  5. Beam size from pixel VTX (shown) • RMS of (phi0c-phi1c) would give beam spot size • Fit by Gaus + straight line. Sigma of the peak is 0.0137 • This corresponds to the beam spot size of 0.0137*2.5cm = 0.342 mm • Using all track. Most of them are in low pT, being affected by multiple scattering and magnetic bending.

  6. Pixel-strip association • phip: projected phi angle from two correlated hit in pixel • phi: phi angle in the first layer of the strip • Clear correlation seen at phip-phi = 0

  7. 18GeV Au+Au planning • Assumption • RHIC uptime 55%, PHENIX uptime 77% • Average luminosity expected: 6×1025 /(cm2 sec) • 25% of delivered luminosity falls in |z|<30cm • BUP estimate: 1 week 18GeV running -> 24M events • Physics target • pT spectra and anisotropic flow (v_n) of identified hadrons 30M evts case 10M evts case

More Related