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L0 trigger report @ exp55

L0 trigger report @ exp55. Svd gemba meeting 2006 / 11 / 22 YoungJin Kim. Hold efficiency 1. - calsvd bug in run 1-5 - TOF trigger was down during run 18-23 - No TOF trigger in run233, 270. Hold efficiency 2. RUN 929 run summary Sequence Control: Accepted 139763 event

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L0 trigger report @ exp55

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  1. L0 trigger report @ exp55 Svdgemba meeting 2006 / 11 / 22 YoungJin Kim

  2. Hold efficiency 1 - calsvd bug in run 1-5 - TOF trigger was down during run 18-23 - No TOF trigger in run233, 270

  3. Hold efficiency 2 RUN 929 run summary Sequence Control: Accepted 139763 event Input rate 36267.84 Hz (affected by readout noise) Alive rate 36561.78 Hz (counted only when DAQ is alive) Accept rate 515.71 Hz Run time 275.00 s Total Deadtime 274.39 s 98.59 % Readout Deadtime 274.27 s 98.54% (98.59% intrinsic) CDC cur.limit time 0.12 s 0.04% 12 times HVtrip time 0.00 s 0.00% RF-clock 515.04 MHz

  4. TOF Multi and Single hit rate

  5. L0 rate and Timing plots

  6. Summary and Plan New L0 trigger system is working well except some run. We expect to showed better performance than old L0 trigger. Finally, new L0 trigger has good performance.Hold and L0 efficiency value are around 97.7% ( ~97.0% @ exp51) I will fix my eyes on L0 trigger and make inquiries into the matter.

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