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TED run

TED run. What we have learn or missed from the TED run ECAL/HCAL PS ( S. Monteil) SPD General time alignement. Calibrate Asymety curve. Done ECAL crate 19 ( 7 point) HCAL crate 24 (9 points) Choice of crate not optimum ( A-side) Crate delay change painfull. ECAL.

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TED run

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  1. TED run What we have learn or missed from the TED run ECAL/HCAL PS ( S. Monteil) SPD General time alignement

  2. Calibrate Asymety curve • Done • ECAL crate 19 ( 7 point) • HCAL crate 24 (9 points) • Choice of crate not optimum ( A-side) • Crate delay change painfull ECAL Asym = Next-Current/Next +Current ECAL T= Asym/0.12 HCAL T = Asym /0.135 Coherent with Yasmine studies - PS no scan done

  3. Relative timing: crate – feb - channel • Crate relative time alignement PS : +-1ns HCAL : +- 2ns ECAL: +-2 ns

  4. Asymetry in a crate ECAL HCAL Inside a crate feb average < 0.6 ns

  5. In Feb all channels are stable Crate 12 Dispersion +- 1ns - few points are off

  6. Odd channel behaviour • HCAL • Channel 23/371/30 • Channel 23/372/12 • Channel 23/381/27 • Channe l9/153/14 • ECAL • channel10/170/20 • channel10/172/28 • channel10/173/12 • channel11/189/14 • channel12/195/12 • channel12/197/12 • channel12/200/0 • channel13/213/28 channel13/215/22 • channel13/217/12 • channel13/219/11 • channel13/219/14 • channel13/219/23 • channel13/220/15 • channel14/226/12 • channel14/226/15 • channel14/232/14 • channel14/235/23 • channel16/266/20 • channel18/293/12 • channel18/294/20 • channel18/295/5 • channel18/301/29

  7. Delay files are produced • Delay files produced for all channels with at least 20 inputs. ECAL & HCAL 11 2 0 2.819585 • 11 2 1 1.501387 • 11 2 2 2.391971 To be used by Frederic input to FEB delay • 11 2 3 1.798781 Can also be donr for PS.

  8. SPD & TED • Calculate Asymetries in the same way Current-Next/Next+Current +1 At least 50 entries Need calibration

  9. Relative efficiency PS/SPD • PS & SPD entries > 20 ratio Nspd/NPs for each FEB channel Different behavior among the crates

  10. SPD /PS ratio Crate 4 Crate 1 Inner crate have lower efficiency repect to PS.

  11. Coherence of timing • Measured delays for • HCAL 15.6 to 12.5 - shift TED -5.5 ns • ECAL 14.2 - shift TED +4 ns • Back to physics settings • HCAL 10.1 to 7.5 • ECAL 18.2 • PS 14ns • Taking in account the particle flight -> Physics settings • HCAL PS-HCAL * 2 ~ 16 ns -> 26.1-23 centered • ECAL PS-ECAL * 2 ~ 6ns -> 24.2 centered • ECAL-HCAL *2 ~ 12 ns -> 8.2 -11. ns OK • With Physics setting HCAL/ECAL will be centered • But PS is at + 14ns

  12. To conclude • Open questions : • Shape of for ECAL/HCAL/PS • SPD difficult to understand mix • Threshold & time alignment • Next TED run to be prepare to gain in precision

  13. Crate 24 Timing HCAL As2 Ns*10 HCAL AS =0.135*T Ted Run recipee

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