1. Sasmodels as example for QENS model library
Thomas Holm Rod
Group Leader for Data Analysis and Modelling
17 September, 2018

2. SasView History 2006 2012 Community driven project
2014
2016
Community driven project
Releases after code camps
ESS joined the project
SINE2020 two employees at ESS

3. SasView manpower 2017 Management Team: Paul Butler (NIST)
Jurrian Bakker (TUD)
Wim Bouwman (TUD)
Miguel Gonzales (ILL)
Richard Heenan (ISIS)
Dirk Honecker (ILL)
Paul Kienzle (NIST)
Jeff Kryzwon (NIST)
Ricardo Leal (ORNL)
David Mannicke (ANSTO)
Torben Nielsen (ESS)
Lewis O’Driscoll (ISIS)
Steve Parnell (TUD)
Wojciech Potrzebowski (ESS)
Piotr Rozyczko (ESS)
Adam Washington (Sheffield)
Tim Snow (Diamond)
Céline Durniak
Management Team:
Paul Butler (NIST)
Mathieu Doucet (ORNL)
Andrew Jackson (ESS)
Steve King (ISIS)
and thanks to the many previous contributors, particularly Jae Hie Cho and Alina Gervaise

4. SasView goals in SINE2020 Modularize & refactore
Python API/scripting interface
Enable usage of SasFit models
Qt based GUI
Python2 -> Python3
… and otherwise remove
technical debt
Past
Now

5. SasView Modularization
ScIentific Library for eXperimentalists
Model marketplace
SasFit
models
2D & 3D plotting module from ESRF
sasmodels
sascore
sasgui
Bespoke GUI e.g. web
silx
1D & 2D fitting
engine
BUMPS
Can be used separately from SasView via Python.
Examples of usage:
Can be run from python terminal (incl. Jupyter notebooks, Mantid)
As scattering kernels in McStas
Student project on Futark (GPU) (easily accessible for student)
SasFit models
Model Marketplace
Can we add models for other techniques than SANS?

7. Contributing your own model (http://marketplace.sasview.org/)

8. Conclusions
Providing access to models via separate module (library) with Python API, increases:
Maintainability
Flexibility
Transparency – opens up code for external contributions
Interoperability
Too early to say if marketplace will make a difference for the SANS community