From spb46 at cam.ac.uk  Sun Oct 11 16:32:09 2009
From: spb46 at cam.ac.uk (spb46 at cam.ac.uk)
Date: Sun, 11 Oct 2009 15:32:09 +0100
Subject: [mcstas-users] The Difference between PowderN and Isotropic SQW
Message-ID: <D0BD0882EC290E1FC36101EA@COMPUTER.quns.cam.ac.uk>

Hello,
      I have been using the PowderN and Isotropic_SQW for some powder 
scattering simulations, and they seem to give functionally identical 
results. Should I be using one rather than the other?

Stephen Begley.


From farhi at ill.fr  Sun Oct 11 22:39:49 2009
From: farhi at ill.fr (Emmanuel FARHI)
Date: Sun, 11 Oct 2009 22:39:49 +0200 (CEST)
Subject: [mcstas-users] The Difference between PowderN and Isotropic SQW
In-Reply-To: <D0BD0882EC290E1FC36101EA@COMPUTER.quns.cam.ac.uk>
References: <D0BD0882EC290E1FC36101EA@COMPUTER.quns.cam.ac.uk>
Message-ID: <39231.193.49.43.111.1255293589.squirrel@195.83.126.3>

Hi Stephen

the PowderN is slightly faster than Iso Sqw, but this latter can also
handle multiple scattering. Also, Sqw was initially designed for liquids,
and was adapted for powders. Depending on the initial F2(q) range
specified in the powder struture file (Lau, Laz, Fullprof...) Sqw may miss
some events if it does not fit the available dynamic range (which depends
on incident energy).

I would recommend PowderN still for most cases.

Emmanuel.

> Hello,
>       I have been using the PowderN and Isotropic_SQW for some powder
> scattering simulations, and they seem to give functionally identical
> results. Should I be using one rather than the other?
>
> Stephen Begley.
> _______________________________________________
> mcstas-users mailing list
> mcstas-users at mcstas.org
> http://mailman.mcstas.org/cgi-bin/mailman/listinfo/mcstas-users
>


-- 
FARHI Emmanuel <farhi at ill.fr>
Groupe DS/CS, ILL4/156, Tel 04 76 20 71 35
ILL, Grenoble


From daniel.hussey at nist.gov  Fri Oct 16 22:10:00 2009
From: daniel.hussey at nist.gov (Hussey, Daniel S.)
Date: Fri, 16 Oct 2009 16:10:00 -0400
Subject: [mcstas-users] installation...
Message-ID: <A3FD81D57663BD41BF701B44F5E75CE712B8081FF2@MBCLUSTER.xchange.nist.gov>

Sorry to send this to the list, but my message to mcstas at risoe.dk was bounced by Riso....
I'm having some problems with installing...I've tried to install on Windows XP, 32-bit and 64-bit systems.  I used the McStas-1.12a-i686-Win32.exe, and clicked "Next" all the way through, accepting the defaults.  When I execute the "Test McStas Installation" in the Help menu, I get the following output in the Mcgui:

Plotters: Scilab PGPLOT/McStas HTML VRML Clustering methods: Single Threads # McStas self-test (mcrun --test='compatible graphics') McStas version 1.12a - Apr. 02, 2009

# Installing 'selftest' directory in C:/DOCUME~1/hussey/LOCALS~1/Temp # Copying instruments from C:\McStas\lib/examples/ # Counts: single=0, scans=0 # Output format: PGPLOT # Start Date: Fri Oct 16 15:43:27 2009
Executing: mcrun.pl   --dir=prisma2a prisma2.instr --ncount=0 TT=-30 PHA=22 PHA1=-3 PHA2=-2 PHA3=-1 PHA4=0 PHA5=1 PHA6=2 PHA7=3 TTA=44
[FAILED] ISIS prisma2: in focusing mode: (256): Bad file descriptor
Executing: mcplot.pl -psc linup_1_45
[Warning] Plot of Scan of parameters with Risoe TAS1 monochromator rocking curve (no collimator): (512): 
[FAILED] Plot of Scan of parameters with Risoe TAS1 monochromator rocking curve (no collimator)
Executing: mcplot.pl -psc h8_test
[Warning] Plot of Single simulation with Brookhaven H8 Termal TAS with vanadium sample: (512): 
[FAILED] Plot of Single simulation with Brookhaven H8 Termal TAS with vanadium sample # Installation check: FAILED. McStas has not been properly installed.
# >> Check that you have a C compiler, perl, and perl-Tk installed.
# End Date: Fri Oct 16 15:43:28 2009

And the following messages in the c-console:
Use of uninitialized value $dir in pattern match (m//) at C:\McStas\lib/tools/perl/mcrunlib.pl line 241.
'no' is not recognized as an internal or external command, operable program or batch file.
** Error exit **
Could not open file 'linup_1_45.sim' at C:\McStas\lib/tools/perl/mcfrontlib.pl l ine 299, <DATA> line 387.
Could not open file 'h8_test.sim' at C:\McStas\lib/tools/perl/mcfrontlib.pl line  299, <DATA> line 387.

Any ideas on how to make the install work????

Cheers-

Dan



From pkwi at risoe.dtu.dk  Sat Oct 17 09:23:21 2009
From: pkwi at risoe.dtu.dk (Peter Willendrup)
Date: Sat, 17 Oct 2009 09:23:21 +0200
Subject: [mcstas-users] installation...
In-Reply-To: <A3FD81D57663BD41BF701B44F5E75CE712B8081FF2@MBCLUSTER.xchange.nist.gov>
References: <A3FD81D57663BD41BF701B44F5E75CE712B8081FF2@MBCLUSTER.xchange.nist.gov>
Message-ID: <8D8AD83E-148B-4844-BBCD-B0B0D89A0D84@risoe.dtu.dk>

Hello Daniel,


On 16/10/2009, at 22.10, Hussey, Daniel S. wrote:

> I'm having some problems with installing...I've tried to install on  
> Windows XP, 32-bit and 64-bit systems.  I used the McStas-1.12a-i686- 
> Win32.exe, and clicked "Next" all the way through, accepting the  
> defaults.  When I execute the "Test McStas Installation" in the Help  
> menu, I get the following output in the Mcgui:


This is actually a known problem - but probably has not been  
documented properly - sorry about that!

Testing the installation from mcgui is broken in Windows. Instead try  
running

mcrun --test

from a windows command window (cmd.exe). This however, does not test  
the production of graphics.

If you want to test graphical output, please:

1) Pick Neutron_Site->Brookhaven->h8_test from the menu system in mcgui.
2) Press run for compilation, run again for simulation and assume  
defaults
3) After the simulation finishes, press plot and you should get  
something like the attached graphics.

Hope this helps,

Peter

--
-------------------------------------------------------------------
Peter Willendrup - Development engineer

RIS? DTU
Materials Research Division
Frederiksborgvej 399
DK-4000 Roskilde

Tlf.: (+45) 4677 5862
Mobil.: (+45) 2125 4612
Fax.: (+45) 4766 5758
Email: pkwi at risoe.dtu.dk
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From G.Burca at open.ac.uk  Wed Nov  4 09:48:37 2009
From: G.Burca at open.ac.uk (Genoveva Burca)
Date: Wed, 04 Nov 2009 08:48:37 GMT
Subject: [mcstas-users] PSD monitor
Message-ID: <fc.00249f7402848e5100249f7402848e51.2848ecd@first-class.open.ac.uk>



  Dear all,

Could you please tell me what is being plotted on the PSD plots? What do the
colours represent: flux, intensity or counted neutrons?

Thank you very much!

Best wishes,

Geno

The Open University is incorporated by Royal Charter (RC 000391), an exempt
charity in England & Wales and a charity registered in Scotland (SC 038302).

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From pkwi at risoe.dtu.dk  Wed Nov  4 12:31:33 2009
From: pkwi at risoe.dtu.dk (Peter Willendrup)
Date: Wed, 04 Nov 2009 12:31:33 +0100
Subject: [mcstas-users] PSD monitor
In-Reply-To: <fc.00249f7402848e5100249f7402848e51.2848ecd@first-class.open.ac.uk>
References: <fc.00249f7402848e5100249f7402848e51.2848ecd@first-class.open.ac.uk>
Message-ID: <43CF8053-08A4-489C-A2A4-69DF5C5C9514@risoe.dtu.dk>

Hello Geno,


What is plotted is the intensity (i.e. the sum of the monte-carlo  
weight 'p' of the arriving neutron rays).  Intensities in McStas are  
always 'per time-unit', i.e. a kind of flux. The normalization of  
course depends on what starting value of the neutron weight is  
assigned in the source component.

For further information, please consult chapter 4 in the McStas users  
manual.


Best regards,

Peter Willendrup


--
-------------------------------------------------------------------
Peter Willendrup - Development engineer

RIS? DTU
Materials Research Division
Frederiksborgvej 399
DK-4000 Roskilde

Tlf.: (+45) 4677 5862
Mobil.: (+45) 2125 4612
Fax.: (+45) 4766 5758
Email: pkwi at risoe.dtu.dk
-------------------------------------------------------------------


On 04/11/2009, at 09.48, Genoveva Burca wrote:

>
>
>   Dear all,
>
> Could you please tell me what is being plotted on the PSD plots?  
> What do the colours represent: flux, intensity or counted neutrons?
>
> Thank you very much!
>
> Best wishes,
>
> Geno
>
> The Open University is incorporated by Royal Charter (RC 000391), an  
> exempt charity in England & Wales and a charity registered in  
> Scotland (SC 038302).
> _______________________________________________
> mcstas-users mailing list
> mcstas-users at mcstas.org
> http://mailman.mcstas.org/cgi-bin/mailman/listinfo/mcstas-users


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From pkwi at risoe.dtu.dk  Tue Dec  8 10:00:39 2009
From: pkwi at risoe.dtu.dk (Peter Willendrup)
Date: Tue, 08 Dec 2009 10:00:39 +0100
Subject: [mcstas-users] Ubuntu 9.10 and McStas 1.12a
Message-ID: <84823C11-15B9-4D59-BAFF-90DD252597A8@risoe.dtu.dk>

Hello everyone,


People running Ubuntu versions prior to 9.10 and McStas installed from the mcstas-1.12a.deb debian package are adviced NOT TO UPGRADE Ubuntu, as PGPLOT/Fortran related package dependencies can not easily be resolved.

If you upgrade anyway or install from scratch on Ubuntu 9.10, the easiest way of getting McStas 1.12a working is:

1) Install certain Ubuntu packages:

apt-get install gcc gfortran pdl pgplot5 libpgplot-perl perl-tk make
(optionally also mpich2 libmpich2-dev)

2) Run sudo dpkg-reconfigure dash,  say "no" to installing dash as /bin/sh

2) Get the mcstas-1.12a-src.tar.gz package via http://www.mcstas.org/downloads/mcstas-1.12a-src.tar.gz

3) Unpack, build and install by

tar xzf mcstas-1.12a-src.tar.gz
cd mcstas-1.12a
./configure
make
sudo make install

Alternatively, wait 1-2 months and McStas 2.0 should be ready.


Best regards,

Peter Willendrup

--
-------------------------------------------------------------------
Peter Willendrup - Development engineer

RIS? DTU
Materials Research Division
Frederiksborgvej 399
DK-4000 Roskilde

Tlf.: (+45) 4677 5862
Mobil.: (+45) 2125 4612
Fax.: (+45) 4766 5758
Email: pkwi at risoe.dtu.dk
-------------------------------------------------------------------