MKE 4 kick waveform scanTI 8 MD 6/6/09

Jan UythovenThanks to Mike B, Stephane and

Jerome

Calibration of BTV beam position vs. kicker voltage, all TI 8 screens

• Two best screens: BTV813 and BTV876

Raw data: BTV pos – timing delayfor BTV813

Apply Calibration, Swap Curve by 180 degrees

BTV813

BTV876

Mean and error bars (spread =)for both screens

Results of both screens agree rather well: Zoom on previous slide

Conclusions

• BTVs provide very precise measurement of kick waveform

• The kick used for LHC beams is just within the spec of 1 % ripple

• For LHC operation the MKE4 kick should be made longer, similar to CNGS, and the last part of the kick to be used after further measurements– Reduce ripple seen by the beam– Less stress on the clipper switch