2006 relative luminosity

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20062006 Relative Luminosity Relative Luminosity

Tai SakumaTai Sakuma MITMIT

4/5/20074/5/2007

http://deltag5.lns.mit.edu/~sakuma/protected/star/scaler/2006/index.shtml

http://deltag5.lns.mit.edu/~sakuma/protected/star/scaler/2006/index.shtml

4/5/2007 Tai Sakuma 2QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.

ContentsContents

• Proposal on unfilled bunches

• Relative Luminosity Update– Board 11 and 12– Timebin– Timestamp on Scaler Files


Proposal on unfilled bunchesProposal on unfilled bunches

• I would like to propose not to use any unfilled bunch for the spin analyses.


Unfilled bunches areUnfilled bunches are

• in the abort gaps• kicked bunches• bunches which are lost

– before they enter RHIC

– after they enter RHIC

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For example, for the fill 7652, the bunch 14, 18, 23, 59, 61, 62, 64, 100 were 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 unfillednot in the abort gaps or kicked bunches but still they were unfilled




For the fill 7909, the bunch 2 was filled at the beginning of the fill For the fill 7909, the bunch 2 was filled at the beginning of the fill but became almost empty by the end of this fillbut became almost empty by the end of this fill




For the fill 7800, the bunch 20 and 60 were only For the fill 7800, the bunch 20 and 60 were only halfway kicked.halfway kicked.




For the fill 7810, the bunch 20 and 60 were not For the fill 7810, the bunch 20 and 60 were not kicked at all.kicked at all.




Determine unfilled bunchesDetermine 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


The list of the fill pattern that I propose to use The list of the fill pattern that I propose to use for the spin analysesfor the spin analyses

http://deltag5.lns.mit.edu/~sakuma/protected/star/scaler/2006/data/fillPatternBxRun6_070405.txt

http://deltag5.lns.mit.edu/~sakuma/protected/star/scaler/2006/data/fillPatternBxRun6_070405.txt


Relative Luminosity UpdateRelative Luminosity Update


The conclusion that I think I am going to reachThe 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 N/A

correct wrong


• The board 11 and 12 were well maintained.

• The board 5 and 6 were moderately maintained.• The board 7 and 8 cannot be trusted.

Hank saidHank said


The total rates for run 6. If you plot this with the The total rates for run 6. If you plot this with the linear scale, you will see two curves for each fill.linear scale, you will see two curves for each fill.




These are the 2nd longitudinal runs.These are the 2nd longitudinal runs.






TransverseTransverse




1st Longitudinal1st Longitudinal




This phenomenon is not evident for 62 GeVThis phenomenon is not evident for 62 GeV but exists but exists




These are 2005 runs. Some fills have two curves.These are 2005 runs. Some fills have two curves.


The board 11 and 12 agree with the 2nd and the The board 11 and 12 agree with the 2nd and the subsequent to the 2nd files from the board 6subsequent to the 2nd files from the board 6



Fill 7892 (2006 2nd longitudinal)




The same plot except each run has its own panelThe same plot except each run has its own panel


One pp production run from the same fillOne pp production run from the same fill




The rates for each bunch for this runThe rates for each bunch for this run




The timebin BBC coincidence rates for this runThe timebin BBC coincidence rates for this run



Board 5 Board 7 Board 8

without bit16without bit16

The peak is between timebin

7 and 8

The peak is between timebin

7 and 8

These two boards don’t have good vertex distributionThese two boards don’t have good vertex distribution




with bit16with bit16



Unlike 2005 runs, there are counts for the timebin 1, 2, 3, 12, 13,

14.

Unlike 2005 runs, there are counts for the timebin 1, 2, 3, 12, 13,

14.




The difference between with and without bit 16The difference between with and without bit 16


The vertex distribution can still be seen.

The vertex distribution can still be seen.


This run has six scaler files from the board 6This run has six scaler files from the board 6



Board 6

1st file 2nd file 3rd file

4th file 5th file 6th file





with bit16with bit16Board 6

1st file 2nd file 3rd file






The differenceThe differenceBoard 6

1st file

2nd file 3rd file


Almost complete agreement from the 2nd to the 6th filesAlmost complete agreement from the 2nd to the 6th files

The 1st file has the similar situationwith the board 5.

The 1st file has the similar situationwith the board 5.


The time window for the bit 16 was The time window for the bit 16 was

the timebin 4 ~ 11 in the timebin 4 ~ 11 in 20052005
















Board 6



the differencethe difference

Board 6

Board 6



the differencethe difference

Run 6174012Run 6174012


These are transverse runs. The board 5 and 6 These are transverse runs. The board 5 and 6 timebin agree with the upper curvetimebin agree with the upper curve




2nd Longitudinal runs2nd Longitudinal runs




62 GeV62 GeV




Timestamp is Timestamp is the stop timethe stop time

run7142024_5_1148293515.sca

STAR run numberSTAR run number Board numberBoard number

timestamptimestamp

The clock was not accurate or synchronized. The clock was not accurate or synchronized.


Compare the timestamp Compare the timestamp with the STAR stop timewith the STAR stop time








Around May 3rdAround May 3rd




Comparison of the Scaler run length Comparison of the Scaler run length and the STAR run lengthand the STAR run length




Scaler boards ran more than 20% longer than Scaler boards ran more than 20% longer than STAR for these runs.STAR for these runs.

run fill bd GlbSetup seconds starsec ratio 7069017 7586 6 minbiasSetup 497.886 93 5.353613 7069017 7586 11 minbiasSetup 499.250 93 5.368280 7069017 7586 12 minbiasSetup 523.098 93 5.624710 7090046 7674 5 ppProduction 741.579 478 1.551421 7090046 7674 6 ppProduction 741.113 478 1.550446 7090046 7674 7 ppProduction 740.729 478 1.549642 7090046 7674 8 ppProduction 740.346 478 1.548841 7090046 7674 11 ppProduction 739.387 478 1.546835 7090046 7674 12 ppProduction 739.067 478 1.546165 7099020 7729 5 pp2006MinBias 1984.320 358 5.542793 7101042 7744 5 ppProductionTrans 2015.230 207 9.735411 7135007 7858 5 pp2006MinBias 629.219 521 1.207714 7135007 7858 7 pp2006MinBias 629.006 521 1.207305 7135007 7858 8 pp2006MinBias 628.917 521 1.207134


To DoTo Do

• Compute R3 – Bit 16

• The board 11• The board 12

– Timebin• The Board 5• The board 6• 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


EndEnd

2006 relative luminosity

Documents

tai sakumathe board

tai sakumathe total

tai sakumathe time window

tai sakumathis

filltai sakumathe rates

nd longitudinaltai sakumathe

filledtai sakumathe

filltai sakumafor