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News

The Computing for Science (CS) group supports ILL scientists, students and visitors in a number of activities including data analysis, instrument simulation and sample simulation.

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News

Projects in Computing Science (2007)

C-lab and High-performance computing

The Computing for Science Group operates several clusters mainly used for molecular dynamics calculations and instrument/experiment simulations. The C-lab will offer the ILL's knowhow, cpu time and softwares to external users through a proposal/approval procedure similar to that for neutron experiments.


Sample simulations for virtual experiments

M. Taylor, supervised by E. Farhi, is computing sample simulations (liquids and powders) for virtual experiments (e.g. Cu, Al, etc.) This will substantially widen the range of neutron sample environments and experiments that one would be able to simulate using McStas.

 

Web interface for easy instrument simulation
A. Akki, supervised by E. Farhi, is designing a web interface providing an easier access to instrument simulation. This will allow the input of all parameters for a given neutron instrument and will return the corresponding McStas simulation.

 

Class objects for Matlab
E. Farhi is developping a set of Matlab class-objects for data processing.

 

SANS_SETTINGS: a new application in Lamp
From determining an experiment configuration to complete data correction and reduction. By Didier Richard and Miguel Gonzales.

 

Backscattering data processing: a new version for Lamp
A complete on site software suite for data correction and reduction, and an application on BARNS for external users. By Miguel Gonzales and Didier Richard.

 

iFitIt for polarised neutron data processing
iFitIt is a JAVA graphical interface which partially automates and simplifies the processing of polarised neutron data. It drives a set of FORTRAN scientific programs, unites their parameter and data sets and computes standard deviations using a perturbation method.
Five students worked or are working on the project: Jonathan Raffin (2004), Olivier Pernet (2005), Antoine Francais (2006), Emmanuel Perrier (2007). (supervised by A. Filhol)

Filing and PkFit for Mac OS X
Filing and PkFit are two user friendly software intended to handle and process data files of neutron Three-Axis Spectrometers (TAS). Both programs were designed in 1997 (A. Bouvet, A.Filhol) and used successfully until Apple discontinued the support for Mac OS Classic.

A new version of PkFit and Filing with a PGplot interface is now available (2007).
A multiplatform version with better interface is currently being developed.

 

vTAS: an instrument simulator for TASs
vTAS is a tool facilitating the use of a Three Axis Spectrometer (TAS), an instrument for which one has constantly translate parameters from real space to reciprocal space and vice versa. vTAS provides an interactive and graphical display of both the instrument configuration and the corresponding measured space thus making easier to understand the behavior of the instrument and its limits.
Noelle Le Delliou (2006) and Peter Braden (2007), supervised by Martin Boehm and Alain Filhol, are resurrecting an old JAVA 1.0 application by A. Bouvet. vTAS is expected to become an everyday tool for TAS users.

 

Diffraction: for teachers and students
Diffraction is an interactive application for Mac OS demonstrating some aspects of diffraction (Laue diffraction, lattice plans, single crystal and powder diffraction).
The first version was developed for a science festival in 1994.
A Mac Os X version (universal binary) was recently released (A. Filhol).
A JAVA version is currently being developed (A. Filhol, N'Sigma)

 

Multimedia projects
Interactive visit of the ILL (now completed)
Movies of instruments and experiments. New movie soon to come: preparing a new experiment on the RED magnet of PN1.

 

Modernising the ILL model
While the ILL model was never designed to resist travels it travelled a lot and is now partially broken.
The project is to design stronger frame and cover, upgrade the model itself, change the computer and screen, and fully redesign the software using modern multimedia techniques (A. Filhol).

 

Last Modified: Tue Sep 18 17:49:08 2007

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