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Correcting order of ultra and very small angle scattering#346

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kara-mela wants to merge 1 commit intoExPaNDS-eu:masterfrom
kara-mela:ISS318-USANS
Open

Correcting order of ultra and very small angle scattering#346
kara-mela wants to merge 1 commit intoExPaNDS-eu:masterfrom
kara-mela:ISS318-USANS

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@kara-mela kara-mela commented Jan 14, 2026

Motivation

Issue #318 stated that 'very small angle neutron scattering technique' (VSANS) is not a subclass of the 'ultra small angle neutron scattering technique' (USANS). After a discussion during the DAPHNE TA1 meeting on 14 Jan 2026, it was clarified that the order is SANS - VSANS - USANS.

Modification

The equivalence of VSANS to SAND and USAS was deleted. Instead, VSANS has now the new parent SANS.

The parent VSANS of USANS was deleted. Instead, USANS is now equivalent to SANS and USAS.

Before:
image

After (only neutron branch:
image

Result

The intended order of the angles is established.

Related Issues

Closes #318

Motivation

Issue ExPaNDS-eu#318 stated that 'very small angle neutron scattering technique' (VSANS)
is not a subclass of the 'ultra small angle neutron scattering technique' (USANS).
After a discussion during the DAPHNE TA1 meeting on 14 Jan 2026, it was clarified
that the order is SANS - VSANS - USANS.

Modification

The equivalence of VSANS to SAND and USAS was deleted. Instead, VSANS has now
the new parent SANS.

The parent VSANS of USANS was deleted. Instead, USANS is now equivalent to
SANS and USAS.

Result

The intended order of the angles is established.
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very small angle and ultra small angle neutron scattering technique

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