[mcstas-users] Question regarding scan

[אלעד כספי]

Thanks Peter.

Yes, that as the problem. Now it works.

El'ad.

 

________________________________

From: mcstas-users-bounces at mcstas.org [mailto:mcstas-users-bounces at mcstas.org] On Behalf Of Peter Willendrup
Sent: Tuesday, March 17, 2009 2:06 PM
To: McStas users list at mcstas.org
Subject: Re: [mcstas-users] Question regarding scan

 

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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