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

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