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News on time calibration

News on time calibration. Collaboration Meeting CERN, 7-10 Feb 2011. Agustín Sánchez Losa IFIC (CSIC – Universitat de València ). Outline. Reminder of the time calibration The last time calibrations performed Intraline calibration: T0s

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News on time calibration

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  1. News on time calibration Collaboration Meeting CERN, 7-10 Feb 2011 Agustín Sánchez Losa IFIC (CSIC – Universitat de València)

  2. Outline • Reminder of the time calibration • The last time calibrations performed • Intraline calibration: T0s • new T0s after reconnection of lines 6 and 9 and HV tuning updated (03/11/2010) • Interline calibration: Time offsets • Period: runs from 01/09/2009 to 02/11/2009 • Period: runs from 11/12/2009 to 08/03/2010 (12/07/2010) • To-Do List Agustín Sánchez Losa – CERN Collaboration Meeting

  3. Reminder of the time calibration F 10 F 9 • Time calibration recipe: • Flash various OMs at the same time by an OB • Plot the distribution of hit arrival times for each ARS • Fit such distribution with a Gauss@Exponential function • Determine Tpeak , the time of the function peak • Plot Tpeakvs distance • Deviations from the straight line fit will be used as corrections to the T0s F 8 F 7 F 6 F 5 F 4 F 3 F 2 Agustín Sánchez Losa – CERN Collaboration Meeting F 1

  4. Reminder of the time calibration Intraline calibration • T0 in thesame line • LED OB • Early-photonregion LED Interline calibration LED • time offsets between lines • Laser OB • Photo-electronlevelregion Laser Agustín Sánchez Losa – CERN Collaboration Meeting

  5. Reminder of the time calibration • Intraline • T0s • Scheme of theautomaticcalibration: • Humaninterventiononlyneeded at theend of theprocesstocheckthecalibration output, helpedby a programwhichmanagesthecorrectionstoapply • runfile & calibration (time & alignment) • Fill time OB-OM histograms • Tpeak • Interline • Time offsets • Processingrun • Autobinning Agustín Sánchez Losa – CERN Collaboration Meeting

  6. Reminder of the time calibration • Two new tables of T0s have been released: • (#6) including offsets until March'10: offsets should be studied after • (#8) now has a T0s table for after the HV tuning updated with the dark room values recalibrated NEW #1 #2 #3 #4 #5 #6 #7 #8 5 Lines 10 Lines 12 Lines HV L10-L12+offsets HV L6-L9+HV Agustín Sánchez Losa – CERN Collaboration Meeting

  7. Intraline(#8): new T0s after reconnection of lines 6 and 9 and HV tuning updated (03/11/2010) • Intraline calibration performed with: • 24 standard LED-OB calibration runs of 16/12/2010 • “2010:V6.5” online calibration: • ARS_T0_VERSION = 55415093 (the t0s to update, Nov'10, by Paco) • But ARS_TVC_VERSION = 57889518 (Last one, by Juan Pablo) • LED-OBs not available: L11F02, L11F21, L12F15 • Same list reported in Amsterdam'10 Agustín Sánchez Losa – CERN Collaboration Meeting

  8. Intraline(#8): new T0s after reconnection of lines 6 and 9 and HV tuning updated (03/11/2010) L09F21 LED-OB is a noisy OB: • the trigger in OB PMT is given by clock signal noise (thanks Paco and Ciro) • flash time is given ~75ns before it should • “time difference signal” shifted close to the end of the time window • Decided to add -75ns to the OB t0 for practical reasons MAX_TRIG_TH0 ~255mV → ADC ~186ch V (ch) ADC ~48ch (~75ns) time (ch) Agustín Sánchez Losa – CERN Collaboration Meeting

  9. Intraline(#8): new T0s after reconnection of lines 6 and 9 and HV tuning updated (03/11/2010) • Corrections summary: (Thanks to Paco, Ciro and Juande) • 466 ARSs couldn't be corrected (no data or dead channel) • 8 ARSs couldn't be corrected (not suitable for time calibration) • 1296 ARSs were corrected: • 1083 less than 1ns • 172 between 1ns and 2ns • 40 between 2ns and 5ns • 1 more than 5ns • And 76 ARSs are in a pair corrected more than 1ns: • 68 less than 2ns • 8 between 2ns and 5ns Agustín Sánchez Losa – CERN Collaboration Meeting

  10. Intraline(#8): new T0s after reconnection of lines 6 and 9 and HV tuning updated (03/11/2010) • 8 ARS were not corrected: they are not suitable for time calibration L03 F14 ARS2 L03 F14 ARS3 L07 F13 ARS4 L07 F13 ARS5 L07 F17 ARS4 L11 F11 ARS4 L11 F11 ARS5 L09 F15 ARS5 Agustín Sánchez Losa – CERN Collaboration Meeting

  11. Intraline(#8): new T0s after reconnection of lines 6 and 9 and HV tuning updated (03/11/2010) N N time (ns) time (ns) L03 F14 ARS2 L03 F14 ARS3 (L07 F13 ARS4) (L07 F13 ARS5) (L11 F11 ARS4) (L11 F11 ARS5) Agustín Sánchez Losa – CERN Collaboration Meeting

  12. Intraline(#8): new T0s after reconnection of lines 6 and 9 and HV tuning updated (03/11/2010) • Also 4 curious pairs of ARS were noticed, one without Token Ring peak, the other without Main Peak (at least some of them known as problematic in charge calibration too, thanks Bruny) N N L07 F17 ARS4 L09 F15 ARS4 time (ns) time (ns) N N L07 F17 ARS5 L09 F15 ARS5 time (ns) time (ns) Agustín Sánchez Losa – CERN Collaboration Meeting

  13. Intraline(#8): new T0s after reconnection of lines 6 and 9 and HV tuning updated (03/11/2010) • Those 2 pairs of ARS were still possible to calibrate N N L04 F17 ARS4 L06 F13 ARS0 time (ns) time (ns) N N L04 F17 ARS5 L06 F13 ARS1 time (ns) time (ns) Agustín Sánchez Losa – CERN Collaboration Meeting

  14. Intraline(#8): new T0s after reconnection of lines 6 and 9 and HV tuning updated (03/11/2010) • And a list of other 50 curious “time difference signals” have been reported in a calibration log available at: http://ific.uv.es/~agusanlo/calibrations/intratical_JPXmas (still thinking in ways to complete this info for E-LOG and internal TWiki) · L04 S13 ARS0 · L04 S13 ARS1 (weird pair, with an ugly signal, both miscalibrated around +3.5ns) · L04 S17 ARS4 · L04 S17 ARS5 (weird pair, one without Token Ring peak, the other nearly without Main Peak) · L05 S24 ARS4 · L05 S24 ARS5 (weird pair, with an ugly signal, both miscalibrated around +4.0ns) · L06 S07 ARS4 · L06 S07 ARS5 (weird pair, with an ugly signal, both miscalibrated around -3.0ns) · L06 S08 ARS0 · L06 S08 ARS1 (weird pair, with an ugly signal, both miscalibrated around -3.0ns) · L06 S09 ARS2 · L06 S09 ARS3 (weird pair, with an ugly signal, both miscalibrated around -2.0ns) · L06 S13 ARS0 · L06 S13 ARS1 (weird pair, one without Token Ring peak, the other nearly without Main Peak) · L06 S23 ARS0 (* This one has an ugly signal, very thin) · L06 S23 ARS1 (* This one has an ugly signal, very thin) · L06 S24 ARS5 (* This one has a specially funny DNLs: pattern change a little if you use a different calibration but same TVCs table) · L07 S17 ars4 (weird pair, one without Token Ring peak, the other without Main Peak) · L07 S17 ars5 · L08 S15 ARS0 · L08 S15 ARS1 (weird pair, with an ugly signal) · L08 S23 ARS3 (* This one has an ugly signal, very thin) · L08 S24 ARS2 (* This one has a specially funny DNLs) Agustín Sánchez Losa – CERN Collaboration Meeting

  15. #8 IntralineExample of sections 1-4 for line 1(2 runs of 15-16/12/2010) Section 1 Floor4-10 Section 2 Floor 11-16 (11-17) Section 3 Floor 17-22 (17-23) Section 4 Floor 23-25 Agustín Sánchez Losa – CERN Collaboration Meeting

  16. #8 IntralineCorrections and Clock-Phases 41 out of 1296 have required corrections larger than 2ns Clockphases stable below 0.1ns Agustín Sánchez Losa – CERN Collaboration Meeting

  17. IntralineClock-Phases stored in the ARS_T0_VALUES • From now on the CLOCK_PHASE values stored in the T0s table refer to L1F0. • That makes easier to track the T0s changes (CLOCK_PHASE and the intrinsic OM time offset separately). T0 = Offset + Clock-Phase Agustín Sánchez Losa – CERN Collaboration Meeting

  18. Reminder of the time calibration • Two new tables of T0s have been released: • (#6) including offsets until March'10: offsets should be studied after • (#8) now has a T0s table for after the HV tuning updated with the dark room values recalibrated NEW #1 #2 #3 #4 #5 #6 #7 #8 5 Lines 10 Lines 12 Lines HV L10-L12+offsets HV L6-L9+HV Agustín Sánchez Losa – CERN Collaboration Meeting

  19. Interline • Two new sets of line offsets computed: • (#4B): 10 standard Laser-OB calibration runs from 01/09/2009 to 02/11/2009 (as a cross-check) • (#6): 13 standard Laser-OB calibration runs from 11/12/2009 to 08/03/2010 (in a first moment until 12/07/2010 with 26 runes) • First 3 runs using version 0.993 of alignment (thanks Andreas). Rest with version 0.994. • From March'10 to July'10 the Laser shows a strange behavior #4B #6 L9 L6 L10 L9 L12 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 Agustín Sánchez Losa – CERN Collaboration Meeting

  20. Example of interline(from 13/08/2009 to 06/11/2009) #4B Line 1 L1 L1 L2 L2 Line 2 L5 L5 L3 L3 L4 L4 L6 L6 L9 L9 L7 L7 L8 L8 L10 L10 L11 L11 L12 L12 Agustín Sánchez Losa – CERN Collaboration Meeting

  21. Example of interline(from 13/11/2009 to 08/03/2010) #6 Line 1 L1 L1 L2 L2 Line 2 L5 L5 L3 L3 L4 L4 L6 L6 L9 L9 L7 L7 L8 L8 L10 L10 L11 L11 L12 L12 Agustín Sánchez Losa – CERN Collaboration Meeting

  22. Interline #4 #4B #6 Interlineoffsetscomputedforseveralperiodscomparisons. Set (#4) was presented in Paris'10 (here added a +0.5ns shift). There is one year of difference between (#4) and (#4B). Between (#4B) and (#6) it was the reconnection of lines 10 and 12. Agustín Sánchez Losa – CERN Collaboration Meeting

  23. Interline • After March'10 some Laser Beacon calibration runs look not suitable for time calibration • Other shows important variations in the line offsets • There are no warranties that the common time reference given by the Laser Beacon is maintained along all the period • Further investigations should be done in order to clarify the offsets in Spring'10 and the cause #6 L6 L9 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 Agustín Sánchez Losa – CERN Collaboration Meeting

  24. Example of interline(from 13/11/2009 to 13/07/2010) #6 Line 1 L1 L1 L2 L2 Line 2 L5 L5 L3 L3 L4 L4 L6 L6 L9 L9 L7 L7 L8 L8 L10 L10 L11 L11 L12 L12 Agustín Sánchez Losa – CERN Collaboration Meeting

  25. To-Do List • Intraline calibration: • Recompute T0s of 2010 with the updated TVCs in order to “complete 2010” • Recompute old T0s with the updated TVCs and study the impact of using the updated ones or not • Perform T0s calibrations for G/2 and G/4 (G/8 LED-OB calibration runs not available) • Study unstable PMTs since HV tuning in Summer'10 • Research & Improvements in intraline calibration: Calibrate the first floors of each line, study the impact of a calibration with independent sections, etc. • Interline calibration: • Study and compute time offsets after March'10 in order to “complete 2010” • Obtain time offsets for other periods • Research & Improvements in interline calibration: Study time offsets evolution along long periods, use LED-Beacons as a standard cross-check for the time offsets, etc. • Start to use the Nanobeacons on L9F1 for time calibration Agustín Sánchez Losa – CERN Collaboration Meeting

  26. Thankyou foryourattention

  27. PLEASE STAND BY BACK UP

  28. Interline • Two new sets of line offsets computed: • (#4B): 10 standard Laser-OB calibration runs from 01/09/2009 to 02/11/2009 (as a cross-check) • (#6): 13 standard Laser-OB calibration runs from 11/12/2009 to 08/03/2010 (in a first moment until 12/07/2010 with 26 runes) • First 3 runs using version 0.993 of alignment. Rest with version 0.994. • From March'10 to July'10 the Laser shows a strange behavior #4B #6 L10 L9 L12 L8 L11 L12 L3 L6 L7 L6 L9 L10 L4 L1 L2 L5 Agustín Sánchez Losa – CERN Collaboration Meeting

  29. Interline • After March'10 some Laser Beacon calibration runs look not suitable for time calibration • Other shows important variations in the line offsets • There are no warranties that the common time reference given by the Laser Beacon is maintained along all the period • Further investigations should be done in order to clarify the offsets in Spring'10 and the cause #6 L6 L11 L8 L9 L12 L3 L7 L10 L4 L1 L2 L5 Agustín Sánchez Losa – CERN Collaboration Meeting

  30. Intraline(#8): new T0s after reconnection of lines 6 and 9 and HV tuning (03/11/2010) L03 F14 ARS2 L03 F14 ARS3 (L07 F13 ARS4) (L07 F13 ARS5) (L11 F11 ARS4) (L11 F11 ARS5) Agustín Sánchez Losa – CERN Collaboration Meeting

  31. Intraline(#8): new T0s after reconnection of lines 6 and 9 and HV tuning (03/11/2010) L07 F13 ARS4 L07 F13 ARS5 Agustín Sánchez Losa – CERN Collaboration Meeting

  32. Intraline(#8): new T0s after reconnection of lines 6 and 9 and HV tuning (03/11/2010) L11 F11 ARS4 L11 F11 ARS5 Agustín Sánchez Losa – CERN Collaboration Meeting

  33. Intraline(#8): new T0s after reconnection of lines 6 and 9 and HV tuning (03/11/2010) L09 F15 ARS4 L09 F15 ARS5 Agustín Sánchez Losa – CERN Collaboration Meeting

  34. Intraline(#8): new T0s after reconnection of lines 6 and 9 and HV tuning (03/11/2010) L07 F17 ARS4 L07 F17 ARS5 Agustín Sánchez Losa – CERN Collaboration Meeting

  35. Intraline(#8): new T0s after reconnection of lines 6 and 9 and HV tuning updated (03/11/2010) • Also 4 curious pairs of ARS were noticed, one without Token Ring peak, the other nearly without Main Peak but it could still be calibrated (also known as problematic in charge calibration too, thanks Bruny) L04 F17 ARS4 L06 F13 ARS0 L04 F17 ARS5 L06 F13 ARS1 Agustín Sánchez Losa – CERN Collaboration Meeting

  36. Laser OB in Spring'10 • Last Laser calibration run “normal”: • 47141 (08/03/2010) • First Laser calibration run “no normal”: • 47498 (22/03/2010) • Web-checklist info: • 20/03/2010: L8 F0 OK • 21/03/2010: No info available • 22/03/2010: L8 F0 RED • 23/03/2010: L8 F0 RED • 24/03/2010: L8 F0 OK • First Laser calibration run looks to become “normal” again: • 50128 (12/07/2010)

  37. LED OB - Intratical intratical_JPXmas (24 runs of 15-16/12/2010) #8

  38. #8 IntralineExample of sections #1-4 for line 1(2 runs of 15-16/12/2010) Section #1 Floor4-10 Section #2 Floor 11-16 (11-17) Section #3 Floor 17-22 (17-23) Section #4 Floor 23-25 Agustín Sánchez Losa – CERN Collaboration Meeting

  39. #8 IntralineExample of sections #1-4 for line 2(2 runs of 15-16/12/2010) Section #1 Floor4-10 Section #2 Floor 11-16 (11-17) Section #3 Floor 17-22 (17-23) Section #4 Floor 23-25 Agustín Sánchez Losa – CERN Collaboration Meeting

  40. #8 IntralineExample of sections #1-4 for line 3(2 runs of 15-16/12/2010) Section #1 Floor4-10 Section #2 Floor 11-16 (11-17) Section #3 Floor 17-22 (17-23) Section #4 Floor 23-25 Agustín Sánchez Losa – CERN Collaboration Meeting

  41. #8 IntralineExample of sections #1-4 for line 4(2 runs of 15-16/12/2010) Section #1 Floor4-10 Section #2 Floor 11-16 (11-17) Section #3 Floor 17-22 (17-23) Section #4 Floor 23-25 Agustín Sánchez Losa – CERN Collaboration Meeting

  42. #8 IntralineExample of sections #1-4 for line 5(2 runs of 15-16/12/2010) Section #1 Floor4-10 Section #2 Floor 11-16 (11-17) Section #3 Floor 17-22 (17-23) Section #4 Floor 23-25 Agustín Sánchez Losa – CERN Collaboration Meeting

  43. #8 IntralineExample of sections #1-4 for line 6(2 runs of 15-16/12/2010) Section #1 Floor4-10 Section #2 Floor 11-16 (11-17) Section #3 Floor 17-22 (17-23) Section #4 Floor 23-25 Agustín Sánchez Losa – CERN Collaboration Meeting

  44. #8 IntralineExample of sections #1-4 for line 7(2 runs of 15-16/12/2010) Section #1 Floor4-10 Section #2 Floor 11-16 (11-17) Section #3 Floor 17-22 (17-23) Section #4 Floor 23-25 Agustín Sánchez Losa – CERN Collaboration Meeting

  45. #8 IntralineExample of sections #1-4 for line 8(2 runs of 15-16/12/2010) Section #1 Floor4-10 Section #2 Floor 11-16 (11-17) Section #3 Floor 17-22 (17-23) Section #4 Floor 23-25 Agustín Sánchez Losa – CERN Collaboration Meeting

  46. #8 IntralineExample of sections #1-4 for line 9(2 runs of 15-16/12/2010) Section #1 Floor4-10 Section #2 Floor 11-16 (11-17) Section #3 Floor 17-22 (17-23) Section #4 Floor 23-25 Agustín Sánchez Losa – CERN Collaboration Meeting

  47. #8 IntralineExample of sections #1-4 for line 10(2 runs of 15-16/12/2010) Section #1 Floor4-10 Section #2 Floor 11-16 (11-17) Section #3 Floor 17-22 (17-23) Section #4 Floor 23-25 Agustín Sánchez Losa – CERN Collaboration Meeting

  48. #8 IntralineExample of sections #1-4 for line 11(2 runs of 15-16/12/2010) LED-OB NOT AVAILABLE Section #1 Floor4-10 Section #2 Floor 11-16 (11-17) LED-OB NOT AVAILABLE Section #3 Floor 17-22 (17-23) Section #4 Floor 23-25 Agustín Sánchez Losa – CERN Collaboration Meeting

  49. #8 IntralineExample of sections #1-4 for line 12(2 runs of 15-16/12/2010) Section #1 Floor4-10 Section #2 Floor 11-16 (11-17) LED-OB NOT AVAILABLE LED-OB NOT AVAILABLE Section #3 Floor 17-22 (17-23) Section #4 Floor 23-25 Agustín Sánchez Losa – CERN Collaboration Meeting

  50. LASER OB - Intertical (runsfrom01/09/2009 to 02/11/2009) #4B

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