Yuanpeng Zhang authored Aug 24, 2021 and Peterson, Peter committed Aug 27, 2021

Co-authored-by: Pete Peterson <peterfpeterson@gmail.com>

Absorption and Multiple Scattering concept page (ornlnext)

Resolve ornl-next FindGlobalBMatrix

IntegrateEllipsoids share background with satellite peaks ornl-next

This pulls in work from https://github.com/mantidproject/mantid/pull/32210/

brought all changes together

Signed-off-by: Jose Borreguero <borreguero@gmail.com>

Add check to convert PropertyManager value directly to pointer (ornl-next)

Modernize CalculatePlaczekSelfScattering (ornlnext)

* Move slow LoadWANDSCD unittest to systemtest

* Update Testing/SystemTests/tests/framework/LoadWANDSCDTest.py

Co-authored-by: StephenSmith25 <56431339+StephenSmith25@users.noreply.github.com>

Merged as ORNL companion to #32130 which has been merged.

The previous version used the same b_tot^2 for all elements, effectively
splitting the sum into the product of two sums. It was not noticed
before because the unit test was for a single element material, Si,
where the sum only has one value.

SetSampleFromLogs (ornlnext)