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STAR Report  Time Meeting

STAR Report  Time Meeting. March 18, 2014 Olga Evdokimov. Start of the 200GeV Run. Begun trigger setup work on Friday, the 14 th Set up three essential triggers for data taking and HFT commissioning Over the weekend – overall good beam conditions, tuned the base-line trigger set

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STAR Report  Time Meeting

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  1. STAR Report  Time Meeting March 18, 2014 Olga Evdokimov

  2. Start of the 200GeV Run • Begun trigger setup work on Friday, the 14th • Set up three essential triggers for data taking and HFT commissioning • Over the weekend – overall good beam • conditions, tuned the base-line trigger set • Additional (physics-based) triggers are • being set: , , e, HT • Monday, the 17th - start elevating triggers • to physics IDs

  3. HFT Commissioning • The HFT is commissioning the three system PXL, IST and SSD • Many pedestal runs collected for calibration by all subsystems. • All three detectors are included in multiple tests runs in the past few days. • STAR priorities for the 200 GeV run: beam stability first, lumi second.

  4. Beam Event 3/18 @9:25 • A few beam loss events prior to March 18th went without notable impact on STAR • We hoped that was a good indication of the protection bump success. • Pre-fire abort & quench today tripped (almost) all STAR systems • A major concern for STAR

  5. Beam Event 3/18 @9:25 HFT Before After • No obvious critical damage for most of the HFT • One of the inner layer sensors lost half of the read out – under investigation.

  6. Plan for Wed. Access • STAR would like to request restricted access • Work plan: • MTD (4 people) • replace TDIG board • damage assessment from pre-fire abort • Gas system (4 people) • ED visitors inspecting the gas system • PXL (2 people) • temperature interlock installation • IST(1 person) • fiber swap for an RDO • BTOW (2 people)

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