Second WG Discussion

Notes from canSAS 2024 Second Working Group Discussion Session

Includes:

• Data Formats
• TOF SANS
• SESANS
• Tomograph

SESANS Session Notes SAS2024 - Sun 2024-11-03

Topic: Cross-calibration

• Following round-robin reference samples have been used so far for SESANS at several sources (according to Wim Bouwman): Flexi-Por, Papyex. These measurements have also been compared to SANS/USANS results from the same samples.
• But: these kinds of samples have the disadvantage that they show artifacts when used for TOF-SESANS.
• Also, the presented reference data had differences in peak-minima of measured reverence samples at different sources. The reason for this difference still has to be identified.
• General consens: We need more sets of standard samples at all facilities

Notes from the discussion round:

• What is needed: New standard samples with shorter length scales of around 50nm (but such gratings are difficult to make)
• The question was raised if new round robin samples should be fabricated which can be handed from facility to facility. On the other hand, a good reference sample depends on each use-case - there is no perfect standard sample for several techniques/facilities. Instead, good existing standard samples (like the above mentioned and already measured Flexi-Por/Papyex) should be used.