<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
Hello McStas users,
<p>I've updated my Monitor_nD component so that one can monitor correlations
between one parameter in one place and the neutron reaching an other place
(i.e. what was the characteristics of my neutron reaching the detector
when it was at this position...?).
<br>Ulrich will probably like it...
<p>One just need to put a PreMonitor in a place where to look at the neutron,
and the Monitor_nD will use that data if the "use premonitor" option was
specified.
<p>Typically, one can obtain guide acceptance diagrams with:
<p> <tt>MyPreMonitor = PreMonitor_nD(</tt>
<br><tt> comp = MyMonitor)</tt><tt></tt>
<p><tt>(... for instance a curved Guide ...)</tt><tt></tt>
<p><tt>MyMonitor = Monitor_nD(</tt>
<br><tt> xmin = -0.1, xmax = 0.1,</tt>
<br><tt> ymin = -0.1, ymax = 0.1,</tt>
<br><tt> options = "hdiv x, all bins=25, auto limits, use premonitor");</tt><tt></tt>
<p><tt>/* this is a phase-space monitor that determines automatically its
dimensions */</tt>
<br><tt>/* uses 25 bins for each dimension, and gets the data from the
PreMonitor position */</tt>
<p>You may also obtain these components via the ILL web page <<A HREF="http://www.ill.fr/tas/mcstas/components/">http://www.ill.fr/tas/mcstas/components/</A>>
<br>The Risoe page still provides the 0.13.3 that has an awful bug when
using the automatic limits.
<br>Get the Monitor_nD v0.13.7, it can do all the job you like.
<p>I'm also working on monitoring any variable in the simulation (not only
from the neutron parameters).
<br>Cheers.
<p>Emmanuel.
<br>
<br>
<pre>--
What's up Doc ?
--------------------------------------------
Emmanuel FARHI, <A HREF="http://www.ill.fr/tas/people/Farhi.html">http://www.ill.fr/tas/people/Farhi.html</A> \|/ ____ \|/
CS-Group ILL4/156, Institut Laue-Langevin (ILL) Grenoble ~@-/ oO \-@~
6 rue J. Horowitz, BP 156, 38042 Grenoble Cedex 9,France /_( \__/ )_\
Work :Tel (33/0) 4 76 20 71 35. Fax (33/0) 4 76 48 39 06 \__U_/</pre>
</html>