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<div class="moz-cite-prefix">Alex and all,<br>
<br>
The microscope should extend some distance above the coherent edge
so as to have as continuous as possible a measurement the peak
region, for the sake of systematics in the CBSA extraction of
polarization. However the fixed array can easily provide 100%
coverage above 9 GeV, whereas there are rate problems trying to do
the same thing with fixed array counters on the low side of the
peak. In light of this, here are some trial concepts to
consider.<br>
<ol>
<li>100 energy bins in the microscope: 8.15 - 9.10 GeV</li>
<li>120 energy bins in the microscope: 7.96 - 9.10 GeV</li>
<li>150 energy bins in the microscope: 7.68 - 9.10 GeV<br>
</li>
</ol>
-Richard Jones<br>
<br>
<br>
On 10/18/2012 6:18 PM, Alexander Somov wrote:<br>
</div>
<blockquote cite="mid:Pine.LNX.4.64.1210181813140.9445@jlabl1.jlab.org" type="cite">
<pre wrap="">
Hi,
One thing we have to discuss regarding the final
microscope location. We've already started discussing
this long time ago.
To cover the photon energy range between 8.3 GeV and
9.1 GeV we will need about 78 columns of microscope
counters. The energy range per counter is ~ 10 MeV.
The microscope consists of 100 columns so that it should
cover about 200 MeV larger range. I think that we should
'distribute' this 200 MeV equaly for both low- and
high- energies, i.e., to cover the range
8.2 GeV < E_gamma < 9.2 GeV.
Any suggestions ?
Thanks,
Alex
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</pre>
</blockquote>
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