measurement plan suggestions

[Bernhard Lauss <lauss@berkeley.edu>]

As, with big thanks to Brendan and Peter,
we have the kicker back,
I have 2 suggestions to the posted runplan
Elog:290 which we should consider for mu+ runs


1) we should change the muSR magnet polarity
   we did not do this last year and there was always
   some suspicion. This would disentangle any muSR effect
   from a detector related gondola effect
   I think we should do this and run 1/2 the kicked mu+
   statistics with the opposite polarity

   Attention! : to physically do this change, do not
   flip the polarity on the power supply but dismount
   the big capacitor covered lying on the experiment floor
   and mount it back the opposite direction.


2) Check of a possible timing effect of the kicker:
   We have now roughly 2x10^9 mu-e events in DC mode on AK3
   We can get 1x10^9 kicked mu-e events on AK3 in 2 days
   (believing Peter's rate estimate)
   This would eliminate TPC related effects.
   Though I have now a large new AK3 plate here (25 cm x25 cm)
   however, in order to not change in comparison with the DC runs
   I would use the patched target.
   We can do this e.g. at the end of the run, when the TPC filling is
   being changed.



	best regards


		Bernhard





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Bernhard Lauss                 E-Mail: lauss@socrates.berkeley.edu
Physics Department
366 LeConte Hall
University of California @ Berkeley
Berkeley, CA 94720                             Tel: (510)-642 4057
United States                                  Fax: (510)-642 9811
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