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Proton Source Startup

Detailed overview of the Proton Source Upgrade Project including the completion status of various tasks and the startup plan for the Booster. The plan outlines specific steps for commissioning and optimizing the system.

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Proton Source Startup

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  1. Proton Source Startup Eric Prebys, Proton Source Dept. Head

  2. Proton Source Shutdown Projects • Linac: • New Lambertson: DONE • Major LCW upgrade: DONE • Modified “notchable” ion source in H-: DONE • Booster: • New collimator system: DONE • Four new MI-8 (EDWA) magnets: DONE • Rearrangement of Long 3 extraction region to reduce “dogleg problem”: DONE except for final alignment • New power supply on MP01: DONE • New Mode 16 damping system: DONE • “Beam whacker” beam profile monitor: DONE • Swap planes of ionization profile monitor: DONE • Replace all hoses on 96 magnet water “candy canes” (unplanned):DONE. • Booster vertical network: DONE, being processed. • Complete new vacuum redout system: Being completed • Install protoype RF cavities: deferred • Vertical magnet moves: deferred Booster startup plan - Prebys

  3. Startup Plan (pre-Nov 17) • Week of 10/27 • Bring Booster up, verify basic operation. • Zero trims and re-measure 3-mults with new lattice. • Studies evenings. • 11/1,11/2 • Test extraction to MiniBooNE • Week of 11/3 -> End of shutdown: • Optimize new lattice. • Move radial feedback to Long 6 (for collimators). • Limited collimator tests. • Begin to establish tight limits on individual loss locations. • Studies evenings • Extract on weekends if requested by MI. • 11/17: Complex back up. Proton source “better” than before Booster startup plan - Prebys

  4. Booster Collimator System • Problem: • One of our existing safety systems (B:BPL5MA) calculates beam power loss by counting lost protons. • This will not work with the collimation system. • Must tighten up our limits on the individual loss monitors. Basic Idea… A scraping foil deflects the orbit of halo particles… …and they are absorbed by thick collimators in the next periods. Booster startup plan - Prebys

  5. Post-shutdown commissioning • Lattice optimization: 2 weeks – 1 month of “ordinary tuning”: • Begin collimator commissioning (1-2 months semi-parasitic): • Bypass B:BPL5MA limit. • Run secondaries in until the begin to attenuate the beam, then back off slightly. • Adjust primary positions to minimize (uncontrolled loss)/(transported beam) • Re-optimize orbit for each collimator setting. • Measure loss patterns and establish tight limits. • Integrate collimators into normal operation. Booster startup plan - Prebys

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