Good point Karen - I was not thinking last night! Sorry for the confusion
everyone!
Pete
On Fri, 9 May 2003, Karen Dow wrote:
>
> >
> > Also, CCR informed me that the way the chime works is to change 1/4-wave
> > plate position at a stored beam cutoff (44mA) [not just when we do a
> > fill].
> >
>
> Just to be sure everyone is clear: changing the half-wave plate at the
> polarized source when the stored current drops below a certain amount,
> while the beam is still stored in the ring, does NOT change the helicity
> of the beam in the ring. The helicity of the next FILL will be affected
> by the changed half-wave plate. You can change the half-wave plate any
> time after a fill has finished, and not affect the stored beam. The
> SPIN FLIPPER would affect the helicity of the stored beam, except it's
> not currently installed in the ring.
>
> Karen
>
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Pete Karpius
Graduate Research Assistant
Nuclear Physics Group
University of New Hampshire
phone: (603)862-1220
FAX: (603)862-2998
email: karpiusp@einstein.unh.edu
http://pubpages.unh.edu/~pkarpius/homepage.htm
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