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In your Res_sample.comp , what is exatly the target_{x,y,z} ?
<br>could you send me an exemple of use of these components ?
<p>I guest that makes a lot of data to store, if you do so for each neutron
pack
<br>comming to the detector !
<p>EF.
<p>Kristian Nielsen wrote:
<blockquote TYPE=CITE>> Date: Thu, 16 Sep 1999 13:24:58 +0200
<br>> From: Farhi <farhi@ill.fr>
<p>> I mean production of data. In fact it is just an inquiery of the (k,w)
<br>> distribution around target (k,w), and possibly, a simple modelisation
of
<br>> this as a gaussian distribution (width and main ellipsoid axes))
<p>Well, what we do to produce the 4-D resolution ellipsoid is to define
an
<br>inelastic scattering sample where S(Q,w) is a constant for all Q and
<br>omega within a predefined 4-D volume. The detector then records the
<br>initial and final k vector for every neutron that reach the detector,
<br>together with the neutron weight p for that event. The expected value
of
<br>p (in the statistical sense) is then just the value of the resolution
<br>function at the (Q,w) computed from the ki and kf. You can then either
<br>do a 4D histogram of (qx,qy,qz,w), or (as we do) just store all the
<br>events in a file for later processing and visualization.
<p>> <br>Visualisation can be done through matlab, or whatever (PGPLOT
?)
<p>Yes (we use both Matlab and PDL).
<p> - Kristian.</blockquote>
<pre>--
Emmanuel FARHI, <A HREF="http://www.ill.fr/tas/people/Farhi.html">http://www.ill.fr/tas/people/Farhi.html</A> \|/ ____ \|/
TAS-Group, Institut Laue-Langevin (ILL) Grenoble ~@-/ oO \-@~
Avenue des Martyrs, BP 156, 38042 Grenoble Cedex 9,France /_( \__/ )_\
Work :Tel (33/0) 4 76 20 71 83. Fax (33/0) 4 76 48 39 06 \__U_/
La Grande Arche, Chateau d'Uriage, 38410 Saint Martin d'Uriage 04 76 59 73 94</pre>
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