tuesday plans

[Brendan Kiburg <kiburg@npl.uiuc.edu>]

Dear Peter,
  Tim and I switched the muSR magnet and all seems fine.  I can show you
what we changed on Wednesday when there is no beam for future
reference.  It is obvious once you poke around, but having the circuit
diagram in your head helps a lot and knowing which plastic wrapping to
take apart is the most important thing.

  I tried to correct the noise problem on ePC1 today but was
unsuccessful.  Nothing looks obviously wrong with the grounds and I made
sure the card was properly seated.  Tomorrow, please ask Genna to take a
look at this.  The sector is 23, it is an outer stip and corresponds to
cable 135 (at least according to our conversion table, which is on page 38
(yellow) of the physical paper logbook for the detectors, in the barrack).
Hopefully Genna will have better luck with this than we did.

  Also, just after lunch, we can switch to the mulanmucap tune at p=1.35
to check the 'split beam' effect as documented in 190.  I am curious if
this has gone away with the collimator out, and it will only take a five
minutes to switch the magnets and to check the spot before we go to mu
minus.  We should then go to mu minus and run a few shifts there before
the samples.  

  We can discuss more Wednesday based on the sample results and the
capture impurity trend plots.  Also, depending on the results of the
teleconference for the analysis tomorrow, we may decide to try and again
balance mu+ and mu- for this run.

Best regards,

Brendan