Suggestions for McStas

[Thomas C Hansen]

Kristian Nielsen wrote:

> Thanks for your comments on McStas, they are most useful. I have already
> implemented strings and integers as instrument parameters in my current
> development version. I can send you a beta if you want, or you can wait
> for the next version if you prefer (maybe a few months?).

For the moment I shall wait, I may contact you again, if I really ready to test
a new beta ersion.

> I am not sure about the problems you mentioned with Beamstop_rectangular
> and mcdisplay, do you have an example that you can send me where the
> problem appears?

I'll have a look again ...

> I agree that it would be good to generalize the adaption algorithm for
> use in other components, and this is something I plan to do. I consider
> the adaptive source a first prototype that will enable us to learn more
> about how adaption can be used in practice, I have found it to be
> surprisingly complex to get right.

Oh yes, it is complex ... setting N_xdiv and N_xpos to 1 and setting N_E to
something around 70 brought something completely spiky to something reasonable
.... The simulation is learning all the time, it could be usefull to write out a
certain distribution as a file, and use this file as an optional input for a
next simulation with similar (not necessary equal - as the distribution eolutes)
configuration.

Regards,

Thomas

--
Dr. Thomas C HANSEN, Instrument Scientist D20, Diffraction Group
Institut Max von Laue-Paul Langevin, BP 156, 38042 Grenoble Cédex 9, France
ILL4-1st floor room 100, Phone +33(0)476207044, Fax +33(0)476207648
mailto:hansen at ill.fr, http://www.ill.fr/YellowBook/D20
Private: 13, allée des étangs, 38240 Meylan, France, +33(0)476180553