[neutron-mc] No peak

Gutmann, MJ (Matthias) M.J.Gutmann at rl.ac.uk
Wed Oct 2 16:25:44 CEST 2002

    following the previous messages about problems with a single crystal
sample, it
seems that everything is working fine now. Apparently, seeing a peak in the
monitor corresponds to seeing that peak in the center of the 4PI monitor.
So, to
summarize, I think everything is fine with the single crystal sample in
just a bit confusing in the beginning.

-----Original Message-----
From: Emmanuel Farhi [mailto:farhi at ill.fr]
Sent: Tuesday, October 01, 2002 4:28 PM
To: neutron-mc at risoe.dk
Subject: Re: [neutron-mc] No peak

I think your tof monitor is not placed/oriented as it should. 
Put an Arm at the same place as the sample, rotated by GamD, and then place
your monitor at the required distance on Z axis. 
I'm afraid your neutrons just do not go presently on the Tof monitor. 


"Gutmann, MJ (Matthias)" wrote: 


        I am trying to simulate a TOF Laue single-crystal diffractometer. 
There is 
a peak showing up for a 4Pi Laue monitor when using a single-crystal sample.

placing a TOF monitor at that position not a single neutron seems to arrive 

The peak should show up at approximately 80000 usecs. 

What am doing wrong? Attached are the input files used in the simulations. 
I am using McSTAS 1.6-ILL on Linux i386. 

Many thanks in advance, 


 <<hrsxdringrot.instr>>  <<YBaCuO4.dat>> 

                         Name: hrsxdringrot.instr 
   hrsxdringrot.instr    Type: unspecified type (application/octet-stream) 
                     Encoding: QUOTED-PRINTABLE 

                  Name: YBaCuO4.dat 
   YBaCuO4.dat    Type: unspecified type (application/octet-stream) 
              Encoding: BASE64


What's up Doc ?


Emmanuel FARHI,  http://www.ill.fr/tas/people/Farhi.html
<http://www.ill.fr/tas/people/Farhi.html>    \|/ ____ \|/

CS-Group ILL4/156, Institut Laue-Langevin (ILL) Grenoble  ~@-/ oO \-@~

6 rue J. Horowitz, BP 156, 38042 Grenoble Cedex 9,France  /_( \__/ )_\

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