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FAR DETECTOR: Rik Gran

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Surface temperature transition on Saturday trips surface heat ... on furlough. All Exp Mtg Feb 18, 2008. NuMI-MINOS Status Report Alec Habig. Protons/pulse: ... – PowerPoint PPT presentation

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Title: FAR DETECTOR: Rik Gran


1
  • FAR DETECTOR Rik Gran
  • 99.9 livetime last week
  • Surface temperature transition on Saturday trips
    surface heat exchangers, crew called in and
    resets things before coil gets too hot
  • NEAR DETECTOR Alec Habig
  • 97.2 live
  • Routine electronics maintenance only source of
    downtime

2
  • Horn 2 Leak Update
  • Within a day of last weeks AEM showing a nice
    linear projection of the Horn 2 leak rate leading
    to repairs in April
  • The leak rate jumped and derivative increased
  • Now will get too bad in 3 weeks
  • NuMI beam will go down on Thursday, Feb. 21 for
  • Horn 2 leak repair and pre-emptive replacement of
    two other suspect connections
  • Dehumidifier repair
  • Pre-target area water re-routing

- Peter Lucas
Horn 2 Leak Rate (gal/day)?
Plan is to resume beam evening of March 11
3
  • Protons/pulse
  • 25x1012 29 7-turns mixed
  • 30x1012 NuMI only (during pbar recycler
    transfers)
  • Some 6-turn running
  • 22x1012 booster troubles
  • New 8-turn tests during MI collimator
    commissioning!
  • An exciting taste of the future

4
A very consistent week! 6x1018 pot, a record
lt200kW when MTEST is running, 220kW in mixed
mode, 250kW in NuMI only
5
Protons per day (E17)
end of 2007 shutdown
6
end of 2007 shutdown
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