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I have prepared a new sample table of counter positions giving
roughly 30 MeV resolution with only 8 different counter widths (from
3 to 40 mm), and with gaps between the counter boundaries to
eliminate coincidences. You can find the table, with plots of the
entire focal plane in this configuration, at<br>
<a href="http://faculty.cua.edu/sober/HallD/counter_table.html">http://faculty.cua.edu/sober/HallD/counter_table.html</a><br>
There is nothing final about this particular configuration. It is
just a starting point for visualizing the situation and helping us
decide how to remove sections of the fixed array to accommodate the
Microscope.<br>
In this calculation, the fixed array counters are at the nominal
focal plane. It will probably be easier to construct if we move
them back a bit, say 10 or 20 cm -- this will not have appreciable
effect on performance.<br>
Dan <br>
<br>
<div class="moz-signature">-- <br>
<font color="#ff0000"><i>Daniel Sober<br>
Professor<br>
Physics Department<br>
The Catholic University of America<br>
Washington, DC 20064<br>
Phone: (202) 319-5856, -5315<br>
E-mail: <a href="mailto:sober@cua.edu">sober@cua.edu</a></i></font><br>
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