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Beam Profile at Target at the End of the Run

This report provides updates on the beam profile at the target and the current status of various projects and equipment at the facility. It also highlights the schedule for the Proton Source shutdown and upcoming activities.

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Beam Profile at Target at the End of the Run

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  1. Beam Profile at target at the end of the run. The implication is that we mkay have been running with a ground fault for some time before the end of the run. Another look at the upstream end as technician Ray holds back the bellows.

  2. The Proton Source shutdown schedule is available here:http://home.fnal.gov/~prebys/protonsource/shutdown_2004/called "schedule" in a variety of formats.Generally things are going well, and as you can seen bythe schedule, it looks like both the Linac and Boostershould be ready to begin turning on the week of October 11.Our priority will be to be in a position to deliver the highestpossible quality beam by Nov. 19.We have been careful to plan the shutdown so that we shouldbe able to come up more quickly than last time.  We are hopingto bring the Proton Source up to reasonable performance ina couple of weeks, and then transition into studies untilthe end of the shutdown.  We are working to schedule thesestudies now, and will pass the schedule on as it firms up.If turn-on goes particularly well AND the new as-founddata are available, we *might* consider going down todo some magnet moves, but it is not currently part ofour plan. -Eric Eric’s status Report for the Booster

  3. The major projects are:    Linac tank 5 quad replacement - Quad ready.  Working to      build fixturing to reduce radiation exposure during      operation.  Will do replacement first week of      October.    Booster Long 13 rearrangement - All hardware ready.      Waiting to start until next week to allow for cooldown.      Scheduled to take three weeks, which we feel is generous.    Booster RF19 in period 18 - Water work and striplines      installed.  Cavity will go in this week.  Service electrical      upstairs nearly complete.  Will begin installing modulator      and bias supply when that is done.    Booster kicker move - Kicker girder moved from period 9 to      period 5.  Should finish job today.    Alignment and 3 network/as-found - Proceeding on schedule.On the current schedule, both the Booster and the Linacshould come on the week of October 11.                         -Eric

  4. X Horn diagnostics will be done by physicists, engineers, and radiation safety personnel. Y The hazard analysis and provisions for beam permits must be complete. Revisions will be made to this schedule if we decide to extract the target separately from the horn. This is expected to increase week 9 requirements for MS group from 7 man-days to 15 man-days. After the horn is inserted and before the blocks are put back, two days of power tests are required. This puts restoration of the shield blocks into week 10.

  5. Anticipated costs of the horn #3. Figures given to Craig Moore for FY05 budget plan.

  6. Target & Instrumentation alignment stand. Testing for a tighter water barrier. Testing for a tighter water containment. Instrumentation DS. BPM & multi-wire. Instrumentation US. BPMs. Vacuum tests of beryllium window.

  7. Status of Horn #2 Hi-Pot: Found design flaw: Al chips created as part of assembly process. This took a few days to clear up.

  8. Horn #2 is safely in coffin Awaiting shipment to Mi12. The scene this morning. Horn #2 in coffin tucked away in a corner.

  9. What’s happening with Horn #1??

  10. The strip-line is exposed by pulling back the bellows section. The accumulation of white powder, or corrosion, on the strip-line can now be seen. The strip-line on the right side shows some discoloration, but is basically in good condition. The bellows was pulled back from the upstream side and shows a little less corrosion. The corrosion ends at the air barrier, as can be seen in this photo. The bellows was pulled back from the upstream side and shows a little less corrosion. The corrosion ends atthe air barrier, as can be seen in this photo.

  11. This morning, day 3. Shielding Removal This morning, day 3. This morning, day 3. After first day.

  12. Detector: Some electronic refurbishment is being done. We basically committed to keeping the detector running. lmc has replaced 6 bad phototubes. The low level supplies will be brought topside to eliminate one source of beam interruption. !! Their beginning to see minimum ionizing particles!! A wipe of the “water” found on the floor shows a brown color and the texture of oil. That is, it looks like “goop.”

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