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KEK Beam Test Analysis Update

KEK Beam Test Analysis Update. Hideyuki Sakamoto MICE Tracker Workshop Imperial College London 07/04/2006. Contents. Mapping Mapping check using Aron’s information Version12: Result by checking with beam data Version13: Result by Aron’s check Efficiency study

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KEK Beam Test Analysis Update

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  1. KEK Beam Test AnalysisUpdate Hideyuki Sakamoto MICE Tracker Workshop Imperial College London 07/04/2006

  2. Contents • Mapping • Mapping check using Aron’s information • Version12: Result by checking with beam data • Version13: Result by Aron’s check • Efficiency study • This is almost same as presented at CM14

  3. Mapping Summary of mapping check with Version12 and Version13 Residual distribution at inconsistency case Summary & Discussion

  4. Version12 = Version13 Summary of mapping Version12 ≠ Version13 Only in Version12

  5. Station:B View:W Version12 Version13 ? 115117

  6. Station:C View:X Version12 Version13 ? 67 & 6970

  7. Station:C View:W Version12 Version13 ? 109110

  8. Station:D View:V Version12 Version13 ? 86 It seems offset …

  9. Station:D View:X Version12 Version13 ? 102103

  10. Summary & discussion • Mapping table of version13 is created by data from Aron’s check • For station D, I am now asking to him whether there was alignment error or not. If there is no error at station D, version13 is correctly affected by Aron’s data. • Some of data at v.13 is matching with v.12, but not for all. I’m not sure why…There is an error at conversion of Channel#(1-128)Fiber#(1-220)?

  11. Efficiency study Checking scheme Light yield (DATA) Summary & Discussion

  12. D C A B Checking Scheme BEAM • Efficiency is determined by residual distribution after linear fitting • Efficiency is defined by N1/N2 • N1: # of events within residual cut • N2: # of events after event selection • Only X-View is studied, because there is only 2 points for V&W-view for fitting. 3 GeV/c p

  13. Event Selection L.Y.vsL1A StationA StationB • PID • Using TOF of D1&D2 • L1A cut is • 860 - 900 [nsec] For all Station StationC StationD

  14. D C A B Efficiency -MC BEAM A B 3 GeV/c p • Efficiency is calculated by simulating for each station. C D 90% Station B A C D

  15. Residual distri. & efficiency（DATA） X view Station B Station A cm Station D Station C

  16. Light yield distribution (DATA) X view • Efficiency is changed according to its’ light yield • L.Y. cut in this study is • 2.5 p.e. for all • StationB (Xview) • 8.1 ± 0.1 p.e. • StationA (Xview) • 10.2 ± 0.1 p.e. • StationC (Xview) • 8.8 ± 0.1 p.e. • StationD (Xview) • 5.3 ± 0.1 p.e. Station B Station A Station D Station C

  17. Efficiency（MC）　vs L.Y.

  18. Efficiency -DATA Station2 Station1 Efficiency (DATA) VS FIBER# Station4 Station3

  19. Summary & discussion • Efficiency: • L.Y. for each view is matched with DATA. • L.Y. for each fiber for each view is estimated to estimating more correctly

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