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2006 Relative Luminosity Tai Sakuma MIT 3/19/2007.

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Presentation on theme: "2006 Relative Luminosity Tai Sakuma MIT 3/19/2007."— Presentation transcript:

1 2006 Relative Luminosity Tai Sakuma MIT 3/19/2007

2 Steps to Get Relative Luminosity To do list
Contents Web page Introduction Steps to Get Relative Luminosity To do list 3/19/2007 Tai Sakuma

3 Website 3/19/2007 Tai Sakuma

4 Introduction Important Piece of Spin Asymmetry Measured by
e.g. Measured by BBC (Beam-Beam Counter) ZDC (Zero Degree Calorimeter) Vertex Dependent East-West Coincidence With various timing 3/19/2007 Tai Sakuma

5 Steps to Get Relative Luminosity
8615 runs 358 fills Select Runs and Fills Determine Spin Pattern 175 fills 161 fills 2643 runs 175 fills 2198 runs 151 fills Get BBC Coincidence Counts (bit16) Combine 2140 runs 143 fills 3/19/2007 Tai Sakuma

6 Steps to Get Relative Luminosity
8615 runs 358 fills Select Runs and Fills Determine Spin Pattern 175 fills 161 fills 2643 runs 175 fills 2198 runs 151 fills Get BBC Coincidence Counts (bit16) Combine 2140 runs 143 fills 3/19/2007 Tai Sakuma

7 Choose Runs for Spin Physics
Select STAR Runs and RHIC Fills for which Relative Luminosity to be computed Get List of 2006 Runs Choose Runs for Spin Physics Keep “Physics” Runs Remove “Bad” and “Junk” Choose by “GlbSetup” Delete Short Runs (< 1min) Server: db01.star.bnl.gov Port: 3316 Database: RunLog_onl Table: beamInfo 8615 runs for 358 fills 2643 runs for 175 fills 3/19/2007 Tai Sakuma

8 2006 Runs 2643 runs for 175 fills 2006 3/19/2007 Tai Sakuma

9 Steps to Get Relative Luminosity
8615 runs 358 fills Select Runs and Fills Determine Spin Pattern 175 fills 161 fills 2643 runs 175 fills 2198 runs 151 fills Get BBC Coincidence Counts (bit16) Combine 2140 runs 143 fills 3/19/2007 Tai Sakuma

10 Steps to Get Relative Luminosity
8615 runs 358 fills Select Runs and Fills Determine Spin Pattern 175 fills 161 fills 2643 runs 175 fills 2198 runs 151 fills Get BBC Coincidence Counts (bit16) Combine 2140 runs 143 fills 3/19/2007 Tai Sakuma

11 Determine Spin Pattern
175 fills Get CDEV Files Choose CDEV files which were recorded after the first run of each fill started and before the last run of the fill ended. Server: onldb.starp.bnl.gov Port: 3502 Database: Conditions_rhic Table: kret DbBlobS Field: dataS 16263 CDEV files, 161 fills Compute Spin Pattern for each CDEV file Polarization Fill Pattern for Yellow and Blue Which yellow bunch crosses with which blue bunch? Determine Spin Pattern for each fill Found one spin pattern for 160 fills Two for one fill: 7672 161 fills 3/19/2007 Tai Sakuma

12 Recorded approximately every 200 seconds
CDEV files XML Files Recorded approximately every 200 seconds 3/19/2007 Tai Sakuma

13 Tags Used to Extract Spin Patterns
For both yellow and blue patternRotationM Determine cogging polarizationFillPatternS 360 RF buckets 120 bunches Abort gaps 3/19/2007 Tai Sakuma

14 Spin Bits Blue Pol. Yellow Pol. Spin4 dec 5 6 9 10 +1 1 -1 2 4 8
+1 1 -1 2 4 5 6 8 9 10 3/19/2007 Tai Sakuma

15 Which Yellow Bunch Crosses with which Blue Bunch?
If cogging is zero, 110 10 20 30 40 50 60 70 80 90 100 4 100 90 110 10 20 30 40 50 60 70 80 4 20 Bunches before The yellow bunch zero crosses with the blue bunch zero at 4 o'clock. The yellow bunch zero crosses with the blue bunch 80 at STAR. 3/19/2007 Tai Sakuma

16 For example, Fill 7957 Polarization pattern for yellow
Polarization pattern for blue Cogging was always zero in 2006 Spin Pattern for bunch crossing at STAR 3/19/2007 Tai Sakuma

17 Determine Spin Pattern
Tried to determine the spin patterns for 175 fills chosen in the previous step. Able to determine the spin patterns for 161 fills. Unique spin pattern for 160 fills Two spin patterns for 1 fill (fill 7672) 3/19/2007 Tai Sakuma

18 Spin Pattern Changed During The Fill 7672
3/19/2007 Tai Sakuma

19 Spin Pattern Changed During The Fill 7672
Both yellow polarization and blue polarization flipped R3 doesn’t change This fill will be rejected in a later step for different reason 3/19/2007 Tai Sakuma

20 Steps to Get Relative Luminosity
8615 runs 358 fills Select Runs and Fills Determine Spin Pattern 175 fills 161 fills 2643 runs 175 fills 2198 runs 151 fills Get BBC Coincidence Counts (bit16) Combine 2140 runs 143 fills 3/19/2007 Tai Sakuma

21 Steps to Get Relative Luminosity
8615 runs 358 fills Select Runs and Fills Determine Spin Pattern 175 fills 161 fills 2643 runs 175 fills 2198 runs 151 fills Get BBC Coincidence Counts (bit16) Combine 2140 runs 143 fills 3/19/2007 Tai Sakuma

22 Get BBC Coincidence Counts
2643 runs for 175 fills Get Scaler Files for Board 5, 6, 7, 8 Read BBC Coincidence Counts Apply Selections Run Time > 1 min Total Counts > 10000 2145 scaler files for 2137 runs for 149 fills from board 5 5180 scaler files for 2228 runs for 153 fills from board 6 1962 scaler files for 1954 runs for 128 fills from board 7 2172 scaler files for 2165 runs for 151 fills from board 8 11559 scaler files for 2341 runs for 162 fills combined 2075 scaler files for 2075 runs for 144 fills from board 5 5071 scaler files for 2166 runs for 148 fills from board 6 1807 scaler files for 1807 runs for 118 fills from board 7 2021 scaler files for 2021 runs for 140 fills from board 8 10974 scaler files for 2198 runs for 151 fills combined 3/19/2007 Tai Sakuma

23 Scaler Inputs for 2006 BBC Coincidence (Bit16) Bunch Number (0 - 119)
3/19/2007 Tai Sakuma

24 Remove Runs with very short run time (< 1 min)
3/19/2007 Tai Sakuma

25 Remove runs with total coincidence counts fewer than 10000
3/19/2007 Tai Sakuma

26 Timestamp is a part of the filename
run _5_ sca STAR run number Board number timestamp 3/19/2007 Tai Sakuma

27 Scaler runs were gradually getting ahead of the STAR runs.
scaler timestamp - STAR run start time 3/19/2007 Tai Sakuma

28 scaler timestamp - STAR run start time
Big shift on May 3rd scaler timestamp - STAR run start time 3/19/2007 Tai Sakuma

29 scaler runtime / STAR runtime
Scaler runtimes are consistent with STAR runtime except the board 6 is sampling. scaler runtime / STAR runtime 3/19/2007 Tai Sakuma

30 Same variable as time series
scaler runtime / STAR runtime 3/19/2007 Tai Sakuma

31 STAR runtime - scaler runtime
3/19/2007 Tai Sakuma

32 Scaler timestamp 3/19/2007 Tai Sakuma

33 timestamp - runtime 3/19/2007 Tai Sakuma

34 BBC Coincidence Rates 2198 runs for 151 fills 3/19/2007 Tai Sakuma

35 Steps to Get Relative Luminosity
8615 runs 358 fills Select Runs and Fills Determine Spin Pattern 175 fills 161 fills 2643 runs 175 fills 2198 runs 151 fills Get BBC Coincidence Counts (bit16) Combine 2140 runs 143 fills 3/19/2007 Tai Sakuma

36 Steps to Get Relative Luminosity
8615 runs 358 fills Select Runs and Fills Determine Spin Pattern 175 fills 161 fills 2643 runs 175 fills 2198 runs 151 fills Get BBC Coincidence Counts (bit16) Combine 2140 runs 143 fills 3/19/2007 Tai Sakuma

37 Runs with spin pattern and BBC coincidence
2140 runs for 143 fills Those runs have the information necessary to compute relative luminosity: spin patterns BBC coincidence counts (bit16) 3/19/2007 Tai Sakuma

38 Steps to Get Relative Luminosity
8615 runs 358 fills Select Runs and Fills Determine Spin Pattern 175 fills 161 fills 2643 runs 175 fills 2198 runs 151 fills Get BBC Coincidence Counts (bit16) Combine 2140 runs 143 fills 3/19/2007 Tai Sakuma

39 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

40 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

41 BBC Coincidence Counts in Abort Gaps
Last ~10 bunches which are not filled Used to abort beams Spin Bits for Abort Gaps: 0, 1, 2, 4, 8 When abort gaps are crossing, there should be few coincidence counts Many coincidence counts in the abort gaps indicate problems 3/19/2007 Tai Sakuma

42 Counts in Abort Gaps Wrong bunch addresses
A lot of counts in the last bunch in the blue abort gap. Few counts in the one bunch before the yellow abort gap. About twice as high as the counts in the other bunches. Few counts in the one bunch before the blue abort gap. Zero count in the last bunch. 3/19/2007 Tai Sakuma

43 Counts in Abort Gaps Wrong bunch addresses 3/19/2007 Tai Sakuma

44 Counts in Abort Gaps Wrong bunch addresses
All runs in the fill 7654 and 7655 All runs in the fill 7657 ~ 7672 All runs in the fill 7672 ~ 7718 3/19/2007 Tai Sakuma

45 Counts in Abort Gaps Backgrounds
This happens in the beginning of the fills. As examples, these are three consecutive runs in the fill 7872 3/19/2007 Tai Sakuma

46 To reject the runs with many counts in the abort gaps,
take the maximum coincidence rate in the abort gaps. log of max count rate in the abort gaps If this is high, the run is bad. 3/19/2007 Tai Sakuma

47 Compare the max counts in the abort gaps
with the median of the coincidence rate in the filled bunches. log of median of count rate in the filled bunches 3/19/2007 Tai Sakuma

48 The ratio If this is high, the run is bad. log of the ratio 3/19/2007
Tai Sakuma

49 Selection in two steps Fill by fill Run by run
Remove fills for which no run from any board is good Run by run log of the ratio 3/19/2007 Tai Sakuma

50 Take the minimum for each fill. It is clear which fills are bad.
3/19/2007 Tai Sakuma

51 1728 runs, 113 fills 3/19/2007 Tai Sakuma

52 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

53 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

54 Run by Run Cut at For those runs, the counts in the abort gaps are
backgrounds noise due to the wrong bunch address Cut at 2 % for 200 GeV runs 10% for 62 GeV runs 3/19/2007 Tai Sakuma

55 2% for 200 GeV, 10% for 62 GeV 3/19/2007 Tai Sakuma

56 1653 runs, 113 fills 3/19/2007 Tai Sakuma

57 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

58 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

59 For some runs, the rates are very low.
1653 runs, 113 fills 3/19/2007 Tai Sakuma

60 After linear fit, remove if the residual is large.
3/19/2007 Tai Sakuma

61 1648 runs, 113 fills 3/19/2007 Tai Sakuma

62 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

63 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

64 Select fills during which at least one run is pp production
1648 runs, 113 fills Select fills during which at least one run is pp production 1608 runs, 108 fills 3/19/2007 Tai Sakuma

65 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

66 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

67 The total rates have two curves for each fill.
3/19/2007 Tai Sakuma

68 The total rates have two curves for each fill.
3/19/2007 Tai Sakuma

69 5, 7, 8 and the 1st 6 for each run form one curve
5, 7, 8 and the 1st 6 for each run form one curve. 2nd and later 6 form another curve. fill 7892 3/19/2007 Tai Sakuma

70 This has bunch dependency.
run 1st 6 2nd 6 1st over 2nd 3/19/2007 Tai Sakuma

71 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

72 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

73 Determine Kicked bunches
I determined the unfilled bunches based on the BBC coincidence and the CDEV files for each fill. 3/19/2007 Tai Sakuma

74 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

75 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

76 3/19/2007 Tai Sakuma

77 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

78 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

79 Scaler Inputs for 2006 BBC Time Bin BBC Coincidence (Bit16)
Bunch Number ( ) 3/19/2007 Tai Sakuma

80 Do you need require bit 16? w/ bit 16 w/o bit 16 3/19/2007 Tai Sakuma

81 w/o bit16 timebin 8 has huge counts for board 7 and 8
3/19/2007 Tai Sakuma

82 Board 7 and 8 have two peaks.
3/19/2007 Tai Sakuma

83 w/o bit16 - w/ bit16 3/19/2007 Tai Sakuma

84 w/o bit16 - w/ bit16 are zero for 2nd ~ last board 6
3/19/2007 Tai Sakuma

85 w/o bit16 3/19/2007 Tai Sakuma

86 Again, 1st 6 agrees with 5. The rest of 6 agree with one another but not with 5.
3/19/2007 Tai Sakuma

87 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

88 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

89 Vertex Distribution 3/19/2007 Tai Sakuma

90 The center of the vertex distribution was between timebin 7 and 8
board 5 3/19/2007 Tai Sakuma

91 The width was between 1.4 and 2.0
board 5 3/19/2007 Tai Sakuma

92 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

93 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

94 R3 in 2006 3/19/2007 Tai Sakuma

95 3/19/2007 Tai Sakuma

96 Steps to Get Relative Luminosity
Combine Background Study Sampling issue 2140 runs 143 fills 1728 runs 113 fills 1653 runs 113 fills Counts in Abort Gap (fill) Counts in Abort Gap (run) Total Counts 1648 runs 113 fills 1608 runs 108 fills R3 Vertex Distribution Timebin counts Determine Kicked Bunches Select Fills 3/19/2007 Tai Sakuma

97 Timestamp on Scaler Files Sampling (Board 6) Problem
Problems and To Do Timestamp on Scaler Files Sampling (Board 6) Problem It seems the the 1st scaler files for each run and the rest of the files are treated differently. Bit 16 and timebin Bit 16 might need to be required for timebin coincidence counts Backgrounds Study the counts in the unfilled bunches. ZDC 3/19/2007 Tai Sakuma

98 End

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