PHOBOS Run 5 Progress - PowerPoint PPT Presentation

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PHOBOS Run 5 Progress

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Run 5 Progress. Peter Steinberg. Brookhaven National Laboratory. February 9, 2005 ... We recognize the difficulty, but this has always been part of our run plan ... – PowerPoint PPT presentation

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Title: PHOBOS Run 5 Progress


1
PHOBOSRun 5 Progress
  • Peter SteinbergBrookhaven National Laboratory
  • February 9, 2005

2
This Week in Chipmunk 2
  • A great week, especially after we came back online

lost
3
Run Statistics Last Week
4nb-1 deliveredfrom RHIC 1.6B (25
overallefficiency)
Goals 1B events(as for every run!)Expecting4
00-500M events
Polarity flips still once/day
4
Si Problems
  • After last meeting, 1 hour access
  • No effect
  • Took very short access Thursday night
  • No effect
  • 1 hour access noon on Friday
  • Removed crate to work in CH
  • Problem resolved ? System back running!
  • 1 hour access at 10pm Friday
  • Full data taking by 1am Saturday

THANKS TO C-AD FOR SUPPORT
5
Run Statistics Last Week
4nb-1 deliveredfrom RHIC 1.6B (25
overallefficiency)
Goals 1B events(as for every run!)Expecting4
00-500M events
Polarity flips still once/day
6
Run Statistics This Week
End62.4
End200
350-500M
Goal O(1B) events(as for every
run!)Expecting400-500M eventsfor full 9 week
run 350-500M eventsat current ratew/ low
energy runs
30!
Polarity flips now lt once/day
7
Requests
  • As usual, as many magnet flips as we can have
  • We recognize the difficulty, but this has always
    been part of our run plan
  • Uptime vs. Development
  • Low energy runs 62.4 GeV injection
  • 15 days 3 setup 18 ? March 5-6
  • High energy pp data
  • Schedule?

8
Calibrating Luminosity
Even with downtime, still approximately 1nb-1
100M events
(deliveredto PHOBOS)
(recordedby PHOBOS)
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