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PHENIX Run 12 Achievements: Precision Measurements and New Detector Installations

The PHENIX collaboration reported significant advancements in the Run 12 meeting on May 11, 2012. Key achievements include integrated luminosity enhancements, precision low-x ∆G measurements, and the installation of new electronics for the forward EM calorimeter. Enhanced triggering capabilities, specific fills for systematic error studies, and commissioning of offline data readout were also highlighted. The FVTX, a new detector for this year, is operational, and efforts are focused on improving data-taking efficiency and polarization measurement strategies moving forward.

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PHENIX Run 12 Achievements: Precision Measurements and New Detector Installations

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  1. PHENIX Run12 Spin John KosterRBRCRSC Meeting2012/05/11

  2. PHENIX Integrated Luminosity

  3. Achievements • Precision/low-x ∆G measurements • New forward EM calorimeter electronics installed • Better triggering • Several special fills for studying systematic errors • Wμ • RPC1 installed • Offline data readout commissioned • Online trigger is in fine-tuning stage • Trigger is in fine-tuning stage • VTX/FVTX installed and commissioned • FVTX is a new detector for this year • Increased use of online polarimetry.

  4. Muon Trigger Rejection Slide from Yoshi-mitsuImazu

  5. Muon Trigger Turn-on Curve Slide from Yoshi-mitsuImazu

  6. Local Polarimetry Goal zone for residual polarization Some large outliers LPOL team: Ciprian Gal, Sanghwa Park, Josh Perry

  7. FVTX and MuTrMatching MuTr Absorber x FVTX FVTX-MuTr Match, dx x x (dx, dy) South x X x x • Loop over MuTr tracks and look for matched FVTX tracks. • Best matching tracks peaks at 0. • We expect a few cm window due to the multiple scattering in absorber. Simulations use 3cm windows for matching. • It will be improved once we finish the detector alignment. (FVTX alignment and global alignment) dx (cm) Slide by XiaorongWang and Jin Huang

  8. For next year • I expect less commissioning time  better data-taking efficiency at the beginning of the run. • Would be great to continue taking 1 polarization measurement half-way through the fill. • Will work on data-taking efficiency during the CuAu run • Would be great to improve this number.

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