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Paul,<br>
<br>
Not yet, but I will make it an agenda item for our next working group
meeting, scheduled for a week from today. Thanks for bringing this to
my attention. If you need something in the mean time, you can state
that we have two needs for disordered radiators.<br>
<ol>
<li>For endpoint running, esp. the Primex measurement in which having
a bremsstrahlung target that behaves like an atomic scatterer
(Bethe-Heitler) without CB corrections makes computing and fitting the
endpoint spectrum much simpler.</li>
<li>For setting up and commissioning the beam line and tagger, we
will certainly want a small array of targets with different
thicknesses, in order to be able to distinguish different contributions
to the background in the tagger, and also to be able to study how the
tagging efficiency depends upon electron beam current. The latter
point is related to variations in beam shape and motion that are seen
as the S/N in various electron beam control loops improves with
increasing beam current.</li>
</ol>
For item #2, we will want 2-3 radiators with different thicknesses that
vary by factors of 3-10. For item #1, we will ask the Primex team to
specify what they want to see. They may be content with one of the
radiators we specify for item #2, but we will leave that up to them.<br>
<br>
-Richard Jones<br>
<br>
-Richard J.<br>
<br>
On 6/21/2010 11:42 AM, Paul Eugenio wrote:
<blockquote type="cite" cite="mid:AD230E59-4ED3-49EF-B226-53D6D54AD428@fsu.edu">
<pre wrap="">Richard,
Are there any write up on plans for non-diamond radiators? I would like to put some description other than a single line in the MOU stating that FSU will provide access to its thin-foil target making facility.
Paul
--
Prof. Paul Eugenio
Florida State University
Department of Physics
Tallahassee, Florida, USA 32306
(850) 644-2585
<a href="mailto:eugenio@fsu.edu">eugenio@fsu.edu</a>
</pre>
</blockquote>
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