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2006 Relative Luminosity Tai Sakuma MIT 4/5/2007
Tai Sakuma MIT 4/5/2007
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Proposal on unfilled bunches Relative Luminosity Update
Contents Proposal on unfilled bunches Relative Luminosity Update Board 11 and 12 Timebin Timestamp on Scaler Files 4/5/2007 Tai Sakuma
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Proposal on unfilled bunches
I would like to propose not to use any unfilled bunch for the spin analyses. 4/5/2007 Tai Sakuma
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Unfilled bunches are in the abort gaps kicked bunches
bunches which are lost before they enter RHIC after they enter RHIC 4/5/2007 Tai Sakuma
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For example, for the fill 7652, the bunch 14, 18, 23, 59, 61, 62, 64, 100 were not in the abort gaps or kicked bunches but still they were unfilled 4/5/2007 Tai Sakuma
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For the fill 7909, the bunch 2 was filled at the beginning of the fill but became almost empty by the end of this fill 4/5/2007 Tai Sakuma
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For the fill 7800, the bunch 20 and 60 were only halfway kicked.
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For the fill 7810, the bunch 20 and 60 were not kicked at all.
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Determine unfilled bunches
Input CDEV <measuredFillPatternM> BBC Coincidence Method Extract the fill pattern from each CDEV file If the fill pattern is not unique for a fill, look at the BBC coincidence and decide if the bunch is filled 4/5/2007 Tai Sakuma
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The list of the fill pattern that I propose to use for the spin analyses
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Relative Luminosity Update
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The conclusion that I think I am going to reach
The Board Number 5 6 (1st file) 6 (2nd file~) 7 8 11 12 Bit 16 Timebin N/A correct wrong 4/5/2007 Tai Sakuma
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Hank said The board 11 and 12 were well maintained.
The board 5 and 6 were moderately maintained. The board 7 and 8 cannot be trusted. 4/5/2007 Tai Sakuma
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The total rates for run 6. If you plot this with the linear scale, you will see two curves for each fill. 4/5/2007 Tai Sakuma
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These are the 2nd longitudinal runs.
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Transverse 4/5/2007 Tai Sakuma
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1st Longitudinal 4/5/2007 Tai Sakuma
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This phenomenon is not evident for 62 GeV but exists
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These are 2005 runs. Some fills have two curves.
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The board 11 and 12 agree with the 2nd and the subsequent to the 2nd files from the board 6
Fill 7892 (2006 2nd longitudinal) 4/5/2007 Tai Sakuma
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The same plot except each run has its own panel
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One pp production run from the same fill
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The rates for each bunch for this run
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The timebin BBC coincidence rates for this run
without bit16 Board 5 Board 7 Board 8 The peak is between timebin 7 and 8 These two boards don’t have good vertex distribution 4/5/2007 Tai Sakuma
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with bit16 with bit16 Board 5 Board 7 Board 8 Unlike 2005 runs, there are counts for the timebin 1, 2, 3, 12, 13, 14. 4/5/2007 Tai Sakuma
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The difference between with and without bit 16
Board 5 Board 7 Board 8 The vertex distribution can still be seen. 4/5/2007 Tai Sakuma
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This run has six scaler files from the board 6
4th file 5th file 6th file 1st file 2nd file 3rd file without bit16 4/5/2007 Tai Sakuma
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with bit16 4th file 5th file 6th file 1st file 2nd file 3rd file
Board 6 4th file 5th file 6th file 1st file 2nd file 3rd file with bit16 4/5/2007 Tai Sakuma
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Almost complete agreement from the 2nd to the 6th files
The difference Board 6 Almost complete agreement from the 2nd to the 6th files 4th file 5th file 6th file 1st file The 1st file has the similar situation with the board 5. 2nd file 3rd file 4/5/2007 Tai Sakuma
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The time window for the bit 16 was the timebin 4 ~ 11 in 2005
without bit16 Board 5 Board 7 Board 8 Run Board 6 with bit16 without bit16 Board 5 Board 7 Board 8 Board 6 Board 6 with bit16 Board 5 Board 7 Board 8 the difference the difference 4/5/2007 Tai Sakuma
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These are transverse runs
These are transverse runs. The board 5 and 6 timebin agree with the upper curve 4/5/2007 Tai Sakuma
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2nd Longitudinal runs 4/5/2007 Tai Sakuma
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62 GeV 4/5/2007 Tai Sakuma
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Timestamp is the stop time
run _5_ sca STAR run number Board number timestamp The clock was not accurate or synchronized. 4/5/2007 Tai Sakuma
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Compare the timestamp with the STAR stop time
Board 8 Board 11 Board 12 Board 5 Board 6 Board 7 4/5/2007 Tai Sakuma
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Around May 3rd 4/5/2007 Tai Sakuma Board 8 Board 11 Board 12 Board 5
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Comparison of the Scaler run length and the STAR run length
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Scaler boards ran more than 20% longer than STAR for these runs.
run fill bd GlbSetup seconds starsec ratio minbiasSetup minbiasSetup minbiasSetup ppProduction ppProduction ppProduction ppProduction ppProduction ppProduction pp2006MinBias ppProductionTrans pp2006MinBias pp2006MinBias pp2006MinBias 4/5/2007 Tai Sakuma
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To Do Compute R3 Bit 16 Timebin The board 11 The board 12 The Board 5
by changing timebin to include Timebin 7, 8 Timebin 7, 8, 9 Timebin 6, 7, 8, 9 Timebin 5, 6, 7, 8, 9, 10 Timebin 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 Timebin 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 4/5/2007 Tai Sakuma
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End
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