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10JuneTom

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									        MI Flying Wire Measurements
              and Confirmations
                  Tom Meyer
                 June, 10 2009



6/10/2009
 On Friday May 29, Ming decided to do a study to determine the
   linearity of the flying wire centroid to the BPM at 102. The
  results showed that the MI Flying Wires might be believable.




6/10/2009
 On Monday Denton, Tom and Jim looked at getting the IPM to show
the whole $2B ramp. A noticeable drop in sigma was seen at the time
  of coalescing. Shoulders were also seen to be forming at this same
                                time.




6/10/2009
We also looked at the Flying Wires both at 8 GeV and 150GeV to
               see the relative change in sigma




6/10/2009
    We looked at beam before and after coalescing and found a
   decrease in sigma that agreed with the drop in sigma seen on
                             the IPM.




6/10/2009
   We turned off coalescing and saw no drop in the sigma at the
                  same time period on the IPM




6/10/2009
      We were then able to use the Flying Wires to confirm our
                  measurements with the IPM.




6/10/2009
                Conclusions
• The Flying Wire appears to work with every test
  we have given it. This can now be confirmed with
  the IPMs.
• We can now use both IPMs and Flying Wires to
  confirms the others measurements.
• The beta value used by the Flying Wires probably
  needs changing.
• The measured sigma in MI drops during
  coalescing.
• We have no IPM or FW data to show if this was
  happening 1 month ago.
6/10/2009

								
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