[mcstas-users] Question regarding scan

[Peter Willendrup]

Hello El'ad,


Could it be that you are running McStas on windows? In that case, you  
are the victim of a known bug, see

http://mailman.mcstas.org/pipermail/mcstas-users/2008q3/000787.html

Replace your c:\McStas\bin\mcrun.pl with this one:
http://cvs.mcstas.org/cgi-bin/viewcvs.cgi/mcstas/mcrun.pl?revision=1.92&root=McStasStable

The problem will be fixed in mcstas-1.12a which is in preparation.


Regards and hope this helps,

Peter Willendrup

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On 17/03/2009, at 12.07, אלעד כספי wrote:

> Dear fellows,
>
> I am a neutron user, new to the field of neutron beam tracking. I  
> had started using mcstas few weeks ago. During my toying with the  
> program, I had managed to describe a simple diffraction setup with a  
> 1D disk detector. I would like to perform a scanning procedure with  
> this detector, using the scan option. However, it seems as if mcstas  
> (version 1.12), while in the scan option, "does not" take into  
> consideration the number of "neutron counts" I am asking it to use.  
> The resulting data have the same statistics when I use either 1000  
> neutron counts, or 100000000 neutron counts. Whenever I perform only  
> one point (NO SCAN) the difference between the data resulted from  
> different values of "neutron counts" is obvious both in the  
> calculation time and the statistics.
>
> I would appreciate any help regarding this problem.
>
> Sincerely,
>
> El'ad Caspi.
>
>
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