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Collaboration Meeting CERN, 6-10 Feb 2012 Collaboration Meeting CERN, 6-10 Feb 2012 Agustín Sánchez Losa IFIC (CSIC – Universitat de València)

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Presentation on theme: "Collaboration Meeting CERN, 6-10 Feb 2012 Collaboration Meeting CERN, 6-10 Feb 2012 Agustín Sánchez Losa IFIC (CSIC – Universitat de València)"— Presentation transcript:

1 Collaboration Meeting CERN, 6-10 Feb 2012 Collaboration Meeting CERN, 6-10 Feb 2012 Agustín Sánchez Losa IFIC (CSIC – Universitat de València)

2 Outline Reminder of the time calibration with OBs Time calibrations performed since Moscow meeting – Intraline calibration: T0s #9 (after HV Jun’11) #10 (after HV Dec’11) LED-OB 1263 (L09F21): Chronicle of a Death Foretold – Interline calibration: Time offsets #8 (after L6 & L9 reconnection and HV Nov’10) #9 (after HV Jun’11) To-Do List 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting2

3 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting3 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 T peak, the time of the function peak – Plot T peak vs distance – Deviations from the straight line fit will be used as corrections to the T0s 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 T peak, the time of the function peak – Plot T peak vs distance – Deviations from the straight line fit will be used as corrections to the T0s Reminder of the time calibration

4 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting4 Reminder of the time calibration T 0 in the same line LED OB Early-photon region T 0 in the same line LED OB Early-photon region Intraline calibration time offsets between lines Laser OB Photo-electron level region time offsets between lines Laser OB Photo-electron level region Interline calibration

5 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting Scheme of the automatic calibration: – Human intervention needed at the end of the process to check the output and the most problematic corrections in case of T0s calibration run file & calibration (time & alignment) Fill time OB-OM histograms T peak T0s Time offsets Processing run Autobinning Intraline Interline Reminder of the time calibration 5

6 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting T0s in the same line by means of the LED OBs 6

7 7 T0s #1 5 Lines #2 10 Lines #3 12 Lines #4 HV #5 #6 L10-L12+offsets G/2G/4 #7 HV #8 L6-L9+HV #9 HV #10 HV 29/Jan/200707/Dec/200730/May/200813/Aug/200907/Nov/200913/Nov/200922/Jun/201023/Jun/201013/Jul/201006/Nov/201029/Jun/201112/Dec/2011 ~10 months~7 months~15,5 months~3 months~5 days~8 months--~4,5 months~7 months~8 months~4,5 months 10.746.202 (NO OFFSETS) 16.703.026 (NO OFFSETS) 16.722.429 (NO OFFSETS) 35.045.036 (NO OFFSETS) 36.934.336 (NO OFFSETS) 37.347.048 (NO OFFSETS) 60.460.029 (NO OFFSETS) 60.460.030 (NO OFFSETS) 53.408.684 (NO OFFSETS) 59.241.588 (NO OFFSETS) 65.091.301 (NO OFFSETS) 94.617.161 (NO OFFSETS) 54.497.692 (mix PACO-AART) 54.497.693 (mix PACO-AART) 54.497.694 (mix PACO-AART) 55.212.410 (mix PACO-AART) 59.246.765 (#6) 59.223.340 (#6) 61.464.136 (#7) 61.464.151 (#7) 60.410.605 (#7) 61.419.526 (#8pre) 60.419.546 (BAD PATCHED) 60.459.844 (PATCHED) 60.459.865 (PATCHED) 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting Two new Intraline calibrations (T0s without offsets): – #9 (after HV Jun’11) – #10 (after HV Dec’11) #1 #2 #3 #5 #4 #6 #7 #8 5 Lines 10 Lines 12 Lines HV L10-L12+offsets HV L6-L9+HV G/N HV #9 #10

8 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting Intraline calibration performed with: – 24 standard LED-OB calibration runs of 29/06/2011 – “2011:V1.0” online calibration LED-OBs not available: L09S21, L10S21, L11S02, L11S21, L12S15 More info available at: http://ific.uv.es/~agusanlo/calibrations/intratical_9/ 8

9 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting Corrections summary: – 526 ARSs couldn't be corrected (no data or dead channel) – 8 ARSs couldn't be corrected (not suitable for time calibration) – 1236 ARSs were corrected: (70%) 1023 less than 1ns (83% of corrected) 141 between 1ns and 2ns (11% of corrected) 60 between 2ns and 5ns (5% of corrected) 12 more than 5ns (1% of corrected) – And 30 ARSs are in a pair corrected more than 1ns: (2% of corrected) 26 less than 2ns 4 between 2ns and 5ns 0 more than 5ns – 6 were fitted and corrected by hand (0.4%) 9

10 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting 8 ARS were not corrected: they are not suitable for time calibration 10 (L03 F14 ARS2) (L03 F14 ARS3) L07 F13 ARS4 (L07 F13 ARS5) (L11 F11 ARS4) (L11 F11 ARS5) time (ns) N N N L08 F15 ARS1 L07 F17 ARS4

11 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting11 Section 2 Floor 11-16 (11-17) Section 2 Floor 11-16 (11-17) Section 1 Floor 4-10 Section 1 Floor 4-10 Section 3 Floor 17-22 (17-23) Section 3 Floor 17-22 (17-23) Section 4 Floor 23-25 Section 4 Floor 23-25 #9

12 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting 72 out of 1236 have required corrections larger than 2ns: 6 % 72 out of 1236 have required corrections larger than 2ns: 6 % Clockphases stable below ~0.1ns #9 12

13 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting Intraline calibration performed with: – 24 standard LED-OB calibration runs of 16/01/2012 – “2011:V4.0” online calibration LED-OBs not available: L09S21, L10S21, L11S02, L11S21, L12S15 More info available at: http://ific.uv.es/~agusanlo/calibrations/intratical_10/ 13

14 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting Corrections summary: – 516 ARSs couldn't be corrected (no data or dead channel) – 9 ARSs couldn't be corrected (not suitable for time calibration) – 1245 ARSs were corrected: (70%) 1094 less than 1ns (88% of corrected) 105 between 1ns and 2ns (8% of corrected) 38 between 2ns and 5ns (3% of corrected) 8 more than 5ns (1% of corrected) – And 20 ARSs are in a pair corrected more than 1ns: (2% of corrected) 14 less than 2ns 6 between 2ns and 5ns 0 more than 5ns – 7 were fitted and corrected by hand (0.4%) 14

15 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting 8 ARS were not corrected: they are not suitable for time calibration 15 L02 F10 ARS2 (L02 F10 ARS3) (L03 F14 ARS2) (L03 F14 ARS3) (L07 F13 ARS4) (L07 F13 ARS5) time (ns) N N L11 F11 ARS4 Unbalanced section #4 of line 5

16 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting16 Section 2 Floor 11-16 (11-17) Section 2 Floor 11-16 (11-17) Section 1 Floor 4-10 Section 1 Floor 4-10 Section 3 Floor 17-22 (17-23) Section 3 Floor 17-22 (17-23) Section 4 Floor 23-25 Section 4 Floor 23-25 #10

17 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting 46 out of 1245 have required corrections larger than 2ns: 4 % 46 out of 1245 have required corrections larger than 2ns: 4 % Clockphases stable below ~0.1ns #10 17

18 L09F21 LED-OB was a noisy OB: the trigger in OB PMT was given by clock signal noise (thanks Paco and Ciro) flash time was 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 ADC ~ 48ch ( ~ 75ns) ADC ~ 48ch ( ~ 75ns) time (ch) V (ch) MAX_TRIG_TH0 ~ 255mV → ADC ~ 186ch time (ns) N CERN’11 15/12/2010 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting18 L09 S23 ARS0

19 15/12/2010 time (ns) N 01/02/2011 time (ns) N 07/02/2011 time (ns) N 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting19 -75ns L09 S23 ARS0 time (ns) N 29/06/2011 time (ns) N +75ns -75ns 16/01/2012

20 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting Time offsets between lines by means of the Laser OB 20

21 21 T0s #1 5 Lines #2 10 Lines #3 12 Lines #4 HV #5 #6 L10-L12+offsets G/2G/4 #7 HV #8 L6-L9+HV #9 HV #10 HV 29/Jan/200707/Dec/200730/May/200813/Aug/200907/Nov/200913/Nov/200922/Jun/201023/Jun/201013/Jul/201006/Nov/201029/Jun/201112/Dec/2011 ~10 months~7 months~15,5 months~3 months~5 days~8 months--~4,5 months~7 months~8 months~4,5 months 10.746.202 (NO OFFSETS) 16.703.026 (NO OFFSETS) 16.722.429 (NO OFFSETS) 35.045.036 (NO OFFSETS) 36.934.336 (NO OFFSETS) 37.347.048 (NO OFFSETS) 60.460.029 (NO OFFSETS) 60.460.030 (NO OFFSETS) 53.408.684 (NO OFFSETS) 59.241.588 (NO OFFSETS) 65.091.301 (NO OFFSETS) 94.617.161 (NO OFFSETS) 54.497.692 (mix PACO-AART) 54.497.693 (mix PACO-AART) 54.497.694 (mix PACO-AART) 55.212.410 (mix PACO-AART) 59.246.765 (#6) 59.223.340 (#6) 61.464.136 (#7) 61.464.151 (#7) 60.410.605 (#7) 61.419.526 (#8pre) 61.419.526 (#9) 60.419.546 (BAD PATCHED) 94.288.297 (#8) 60.459.844 (PATCHED) 60.459.865 (PATCHED) 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting Two new Interline calibration (time offsets between lines): – #8 (after L6 & L9 reconnection and HV Nov’10) and #9 (after HV Jun’11) – Completed all the periods until end 2011! #1 #2 #3 #5 #4 #6 #7 #8 5 Lines 10 Lines 12 Lines HV L10-L12+offsets HV L6-L9+HV G/N HV #9 #10

22 Lines #2 10 Lines #3 12 Lines #4 HV #5 #6 L10-L12+offsets #7 HV #8 L6+L9+HV #9 HV 07/Dec/0730/May/0813/Aug/0907/Nov/0913/Nov/0913/Jul/1006/Nov/1029/Jun/11 #2#3A#3B#3C#4- #6 (DIRTY) #6#7#8pre#8#9 12 runs (25/02/08 → 12/05/08) 1 run (02/06/08) 10 runs (09/09/08 → 22/12/08) 29 runs (23/12/08 → 12/08/09) 10 runs (01/09/09 → 02/11/09) - 26 runs (11/12/09 → 12/07/10) 13 runs (11/12/09 → 08/03/10) 14 runs (19/07/10 → 25/10/10) 4 runs (24/11/10 → 27/12/10) 26 runs (24/11/10 → 03/06/11) 25 runs (19/06/11 → 12/12/11) PACO (0.992) auto (0.992) auto (0.994) Not Done PACO (0.992) AART (0.992) AVERAGE Paco-Aart auto (0.992) auto (0.994) DIFF (0.994- 0.992) auto - 1-2,1 -1,5--3,0-2,28-2,83-3,0 0,0-3,0-2,9--2,7 -3,0-2,3-2,4-2,6 2-1,9-2,1-1,9--2,6-2,12-2,55-2,6 0,0-2,6-2,8--2,9-3,0 -2,9 -3,0 30,80,50,9-0,3-0,63-0,360,1 0,0-0,30,1- 0,30,5 0,4 4-----1,7-2,56-2,32-1,4-1,5-0,1-1,6-1,7--1,5-1,6-2,1 -2,0 5-2,4-2,2 --3,6-3,31-3,65-3,5 0,0-3,5 --4,0 -3,4-3,2 -3,4 6-0,9 -0,8--0,1-1,10-0,79-0,5 0,0-0,30,3-----0,6-0,3 7-0,2-0,30,1--0,20,33-0,13-0,4 0,0-0,5-0,8--0,7 -0,3-0,5-0,1 87,17,57,6-7,55,336,227,87,90,17,97,2-8,18,07,86,86,97,0 91,00,80,9-0,30.04-0,020,0 0,2------0,8 -1,0 10-1,6-1,3-1,2--0,8-1,00-0,09-0,9-0,70,2----1,3-1,2-0,5-0,3 -0,2 11----5,43,974,495,23,5-1,73,64,3-3,94,04,13,94,14,4 12----3,13,313,013,00,7-2,30,4--1,1 0,31,20,91,0 Mean -0,02-0,010,21-0,38-0,010,080,320,00-0,320,030,02-0,010,00-0,02-0,01 0,00 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting22

23 #7 #8 #9 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting23

24 Line 1 Line 2 Example of interline (from 03/11/2010 to 20/06/2011) #8 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting24

25 Line 1 Line 2 Example of interline (from 29/06/2011 to 12/12/2011) #9 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting25

26 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting26 Official offset Validity period Laser average ±1ns Laser offset period Laser offset RMS

27 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting27

28 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting28

29 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting29

30 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting To-Do List Intraline calibration by OB: – Compute intermediate T0s, starting for the ones from 2011 – Recompute old T0s with updated TVCs and study the impact of using ones or another – Research & Improvement on intraline calibration: Calibrate the first floors of each line, study the impact of a calibration with independent sections, Study unstable PMTs since HV tuning in Summer'10, etc. Interline calibration by OB: – Research & Improvement on interline calibration: Keep studying time offsets evolution along long periods, use LED-Beacons as a standard cross- check for the time offsets, impact of the noise in the line offset measurements, etc. 30

31

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