Hi!
> I remember overhearing conversation between vitaliy, tancredi and CCR
> about transversal holding field read back problem, which makes it look
> like the holding field is at 22 degrees although it is in fact 45.
People are very confident the angle is 45 degrees - I did the simulations
for 22.5 degrees anyway...
Adrian
> Chi
>
> On Tue, 12 Aug 2003, Adrian T Sindile wrote:
>
> > Hi!
> > Some time ago I sent out a few Monte Carlo plots I did in order to educate
> > myself... in them, I was showing reconstructed Monte Carlo epel asymmetry
> > (so they were not simply theoretical curves, I followed pretty much the
> > analysis chain - using blastmc generated files instead of real data).
> >
> > Today, because the ABS target display in the counting bay was showing a
> > holding field of about 22 degrees (not 45, as we think we are running)
> > Ricardo asked me to redo the simulations for a target holding field of
> > 22.5 degrees.
> >
> > I am attaching both the older 45 degree picture (Asymmetry.ps) and the
> > 22.5 degree picture (Asymmetry_225.ps) for comparison.
> >
> > I think this comparison shows how important it is to know the holding
> > field angle precisely... but everybody knows that. If the angle is around
> > 20 degrees, the right asymmetry goes from plus to minus (like we are
> > seeing in real data!)...
> >
> > Adrian
> >
> >
> > -------------------------------
> > Adrian Sindile
> > Research Assistant
> > Nuclear Physics Group
> > University of New Hampshire
> > phone: (603)862-1691
> > FAX: (603)862-2998
> > email: asindile@alberti.unh.edu
> > http://einstein.unh.edu/~adrian/
> >
> >
>
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