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Time Shifting Analysis for CFEB Peaking Times in Ohio State

Explore the impact of time shifting on CFEB peaking times at Ohio State, focusing on chip-to-chip variations and clock instabilities. Analyze tpeak vs. delay setting, LCT phases, and outliers to optimize data accuracy and reliability.

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Time Shifting Analysis for CFEB Peaking Times in Ohio State

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  1. Time Shifting CFEB Peaking Times S. Durkin Ohio State Mar. 5, 2010 1

  2. Raw tpeakvs Delay Setting Chip to Chip Time Variation Removed Preblkend=8 Preblkend=7 tpeak (nsec) tpeak (nsec) delay setting delay setting 2 Black LCT phase=0 Red LCT phase=1 Pulser time delays treated differently from Data time delays

  3. 50 nsec phase fixed tpeakvs Delay Setting Chip to Chip Time Variation Removed Preblkend=7 Preblkend=8 tpeak (nsec) tpeak (nsec) delay setting delay setting Black-Data Red-Delay Setting Delay set to shift 25 nsec at delay setting 16-17 Data far off Delay Settings due to Clock Instabities

  4. Pre_block_end =7 Outliers tpeak –tset(nsec) tpeak-tset (nsec) Outliers Red – Bin 17 Blue – Bin 5 Set Time versus Measured time is small ~1 nsec Avoid Bins 5 and 17

  5. Pre_block_end =8 Outliers tpeak –tset(nsec) tpeak-tset (nsec) Outliers Red – Bin 17 Blue – Bin 5 Set Time versus Measured time is small ~1 nsec Avoid Bins 5 and 17

  6. Bin Clock Instabilities

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