2012 Standards Discussion
From canSAS
- The following is the agenda of work posted under business for canSAS-2012. Please add comments and expand on details here:
- Purpose and goals: Intercomparison of data measured on the same sample with different instruments and different techniques (SAXS, SANS, light scattering etc.) can prove valuable in a number of ways. In particular it aids understanding of details of the experimental methods and it can help assess reliability. In a similar way, looking at results of data reduction or analysis generated with different software can provide valuable information about performance and verification of methodology. Specifically these activities should:
- Provide Quality Assurance/Quality Control,
- Improve (reduce) uncertainties of SAS measurements in general,
- Help each facility continuously improve performance and quality of data.
- We will discuss what types of tests are interesting/important:
- Beam intensity standards - there are several different ways to quantify this
- Standards to test resolution
- Absolute intensity calibrations,
- Materials for Q calibration,
- etc. etc,
- Some other related issues:
- Inelastic,
- Multiple scattering,
- Wavelength contamination,
- Detector efficiencies at different wavelengths
- limits in signal to noise - how weak a signal can be reliable extracted;
- etc.
- Outcomes needed are:
- A written plan to sustain long term effort in this area
- This should describe how to seed, co-ordinate and publicise “ad-hoc” projects ,
- Assess how frequently exercises can be undertakem
- Define good ways to disseminate/share results. This will including “advertising” projects and using them as input for other activities.
- We should aim to define a list of 2 or 3 projects for work in the near term. This should include a plan of action and participants for each.
- We shoud have a plan for presentation at SAS 2012. (This might just be an announcement of the plan and see who wants to participate?.)
- Purpose and goals: Intercomparison of data measured on the same sample with different instruments and different techniques (SAXS, SANS, light scattering etc.) can prove valuable in a number of ways. In particular it aids understanding of details of the experimental methods and it can help assess reliability. In a similar way, looking at results of data reduction or analysis generated with different software can provide valuable information about performance and verification of methodology. Specifically these activities should:
