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Special Report NuMI Target Updates

Kris Anderson 28-Mar-2011. Special Report NuMI Target Updates. Status Update Target Hall • Target module ready to accept new target • General target hall working ongoing (e.g., dehumidifier maintenance ) NT-06 Preparation for Beamline Installation

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Special Report NuMI Target Updates

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  1. Kris Anderson 28-Mar-2011 Special Report NuMI Target Updates Status Update Target Hall • Target module ready to accept new target • General target hall working ongoing (e.g., dehumidifier maintenance) NT-06 Preparation for Beamline Installation • Successful downstream water turnaround retrofit of NT-06 • QA of weldments revealed excellent results (X-ray shows no internal defects and target pressure tested to 150 psig for 40 minutes with no pressure loss) • Reassembled target core in canister • Completed survey- all features fall within specified tolerance (~ ¼ mm) • Target will be installed and surveyed in carrier frame assembly this week • Expect to start installation in NuMI Target Hall Monday 4/4 III. Reclaim NT-02 as a contingency spare • ALARA plan in preparation to remedyslipping couplers and install a new DS screw drive bearing block • Efforts should re-start later this week • May require ~2 weeks of effort to reclaim z-drive motion (if possible)

  2. Previously Identified Potential Failure Location Special Report NuMI Target Updates Downstream Water Turnaround Weldments NuMI Low Energy Target General Assembly Layout

  3. Special Report NuMI Target Updates NT-06 Retrofit NT-06 Cooling tube transition sleeves cleaned and ready for new water channel design

  4. Special Report NuMI Target Updates NT-06 Retrofit NT-06 Retrofit ready for welding and X-ray inspection Tuesday 3/22

  5. Special Report NuMI Target Updates NT-06 Retrofit Successful Installation of Welded Retrofit Turnaround

  6. Special Report NuMI Target Updates NT-06 Assembly Reassembled NT-06 Target Core into Canister Assembly •Survey shows can features compared to previous referencing within 0.002” •Target tube straight vertically within ± 0.005” • Target tube straight horizontally within +0.009”/-0.003” Excellent Results

  7. Special Report NuMI Target Updates NT-07 and NT-08 Approach NT-07 and NT-08 Current proposal is IHEP will send finished target core with the exception of the downstream water turnaround and we will install our design and finish target assembly here NT-07 and NT-08 are expected from IHEP 9/30/2011

  8. Key Dates Special Report NuMI Target Updates Estimated Key Dates-Nominal Scenario NT-06 Installation • NT-06 Target/Baffle Carrier final outfitting at MI-8, survey, and Q/A this week 3/28 thru 4/2 • Installation of NT-06 intobeamlinechase 4/4 – 4/9 • Estimate for beam ~12:00 on Sunday 4/10 II. NT-02 Path (Contingency Target) • NT-02 is leak tight but status of z-drive reclamation is still TBD • Likely to take about 2 weeks of effort to define and implement procedure to assess and return z-drive mechanism to operational status; Will resume work to recover z-drive later this week pending approval of ALARA plan

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