1 / 18

DHCAL Noise Filter

DHCAL Noise Filter. Analyze each ΔTS separately – assumption: noise is concentrated in 1TS  Eliminate the noise TS and use the rest of the event. Board Noise. 2. 3. 1. 4. MC. MC: DHCAL Oct10 setup, assume all hits in 1ΔTS e+: 2, 4, 6, 8, 10, 12, 16, 20, 25, 32 GeV

sezja
Download Presentation

DHCAL Noise Filter

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. DHCAL Noise Filter

  2. Analyze each ΔTS separately – assumption: noise is concentrated in 1TS  Eliminate the noise TS and use the rest of the event Board Noise 2 3 1 4 MC MC: DHCAL Oct10 setup, assume all hits in 1ΔTS e+: 2, 4, 6, 8, 10, 12, 16, 20, 25, 32 GeV pi+: 2, 4, 6, 8, 10, 12, 16, 20, 25, 32, 40, 50, 60 GeV Cut if MaxBoardOcc>120

  3. Verify NoiseFilter 2 1 In Time (using 2 ΔTS) Out Of Time

  4. 4 3 In Time (using 2 ΔTS) Out Of Time

  5. Board Frame Noise Previously: Cut if MaxBoardFrameOcc>30 Not so obvious now. For now, impose: Cut if (MaxBoardFrameOcc>10 && MaxBoardFrameOcc==CorrespondingBoardOcc) Clear the ASIC-related noise first. ASIC-related MaxBoardFrameOcc>10 && MaxBoardFrameOcc==MaxBoardOcc next slide

  6. In Time (using 2 ΔTS) Out Of Time MaxBoardFrameOcc>10 && MaxBoardFrameOcc<20 && MaxBoardFrameOcc==MaxBoardOcc && MaxBoardOcc<120 MaxBoardFrameOcc>20 && MaxBoardFrameOcc<30 && MaxBoardFrameOcc==MaxBoardOcc && MaxBoardOcc<120

  7. In Time (using 2 ΔTS) Out Of Time MaxBoardFrameOcc>30 && MaxBoardFrameOcc==MaxBoardOcc&& MaxBoardOcc<120

  8. But, modify based on MC MC - zoom MC Cut if (MaxBoardFrameOcc>15 && MaxBoardFrameOcc==CorrespondingBoardOcc)

  9. ASIC Noise MC MC Cut if (MaxASICOcc≥45 && Nhits<300 or MaxASICOcc≥55 && Nhits≥300) && (ASICOcc≥45+0.8xMeanNeighLayerASICOcc) Remark: No ASIC occupancy = 64 after MaxBoardOcc>120 cut – verified with 660210

  10. After the cuts so far 20

  11. 21 23 Board borders aligned along the x-direction 22 Board borders aligned along the y-direction

  12. 20 21 Cut all (ASICOcc≥45+0.8xMeanNeighLayerASICOcc)

  13. 22 23

  14. ASIC Frame Noise MC MC Cut if (ASICFrameOcc>13 && ASICFrameOcc==CorrespondingASICOcc) (24)

  15. 24 Cut if (ASICFrameOcc>13 && ASICFrameOcc==CorrespondingASICOcc) Helper for the board frame noise which is not yet implemented.

  16. Board Frame Noise For the Cases 21, 22 and 23 MC 21, 22, 23 all zoom MC • Implement two versions of cuts: • Loose: Require for each event, discard the event only if the noise is in time with the event. • Tight: Leave the implementation option to the analyzer. • Cuts related to these plots on next slide 

  17. Noise Filter Loose Selection: Cut if MaxBoardOcc>120 or (MaxBoardFrameOcc>15 && MaxBoardFrameOcc==CorrespondingBoardOcc) or (ASICOcc≥45+0.8xMeanNeighLayerASICOcc) or (ASICFrameOcc>13 && ASICFrameOcc==CorrespondingASICOcc) or BoardBorderHits≥10 && MeanBorderLineNeigh≤1 for borders along X or BoardBorderHits≥10 && MeanBorderLineNeigh≤1 for borders along Y Tight Selection: Cut if MaxBoardOcc>120 or MaxBoardOcc>90 && Nhits<400 or (MaxBoardFrameOcc>15 && MaxBoardFrameOcc==CorrespondingBoardOcc) or (ASICOcc≥45+0.8xMeanNeighLayerASICOcc) or (ASICFrameOcc>13 && ASICFrameOcc==CorrespondingASICOcc) or BoardBorderHits≥10 for borders along X or BoardBorderHits≥15 for borders along Y or BoardBorderHits≥10 && MeanBorderLineNeigh≤1 for borders along Y

  18. Noise Filter Statistics Total number of events analyzed:  55600593 1 Events with bad timing (MPEvent≠MPRun2):  745428(1.3%3) Events after timing veto:  54855165 Events with in time noise4:  608909 (1.1%) Events with out of time noise:  109040 (0.2%) Events after noise veto: 54246256(97.6% of grand total) 1FNAL Runs ~ 23M, CERN Runs ~ 33M = ~ 56M. 2 The most popular (MP) ΔTS bin is not one of the two MPs of the run. 3 See the top left figure in slide 11 of ΔTS analysis. 4 In time with any of the selection patterns in slide 16 of ΔTS analysis.

More Related