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Tim,<br>
<br>
Do we have a spec on the energy stability of the CEBAF 12 GeV beam? It
would not make sense to spec the stability of the tagger magnet any
better than the beam.<br>
<br>
-Richard J.<br>
<br>
Tim Whitlatch wrote:
<blockquote type="cite" cite="mid:4ACDEF73.30903@jlab.org">
Hi All,<br>
<br>
We plan on having an NMR probe (actually 2). The power supply will be
stable to 10ppm. I spoke with Stepan from Hall B and they are not using
feedback and have not had the need. They have a 0.1% energy resolution
requirement.They periodically look at the Hall probe data and have not
seen any changes that would affect their resolution.<br>
Shall we get rid of our feedback/control requirement?<br>
<br>
Tim<br>
<br>
<br>
</blockquote>
<br>
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