<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Hi Dan,</div><div><br></div><div>I have the survey group looking through their fiducialization data closely again.</div><div><br></div><div>Tim<br><br>Sent from my iPhone</div><div><br>On Feb 6, 2014, at 7:26 PM, Daniel Sober <<a href="mailto:sober@cua.edu">sober@cua.edu</a>> wrote:<br><br></div><blockquote type="cite"><div>
I have added some new plots for Configuration 6 (the entry beam
pipe) and Configuration 3 to the web page<br>
<a href="http://faculty.cua.edu/sober/halld/mapping/">http://faculty.cua.edu/sober/halld/mapping/</a><br>
<br>
The Config. 3 plots vs X look a little choppy, but I have not yet
applied the probe calibrations (which are all in the right
directions).<br>
<br>
The data points in the entry region align pretty well with the
nominal beam line (a few mm, 7 mr), but there is a disturbing
longitudinal offset of about 4 mm with respect to the Tosca field
(although the field shapes agree very well.) How convinced are you
about the reliability of the surveys? <br>
<br>
Dan<br>
<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>
</div>
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