[NOBUGS] Release of Mantid v6.11.0

[Sarah Foxley - STFC UKRI]

Hello,



We are proud to announce version 6.11.0 of Mantid. Installation packages can be found on our download page<https://download.mantidproject.org/> along with updated instructions for installing the latest release via Conda. You can also access the source code on the GitHub release page<https://github.com/mantidproject/mantid/releases/tag/v6.11.0>.



 In this release we gave extra attention to fixing bugs and improving algorithms (for example by making them run faster or use less memory). We also added several new algorithms. These are the highlights for this release:

  *   There is a new Deprecation Policy<https://docs.mantidproject.org/nightly/deprecation.html> for Mantid. One of the main changes is that we will deprecate algorithms that have not been used for 3 years or more.
  *   For single crystal diffraction, we added a new algorithm FindMultipleUMatrices to find multiple UB matrices when given lattice parameters for sample with multiple domains or spurious peaks.
  *   Also for single crystal diffraction, IntegratePeaksSkew is better at determining background bins by minimising third-moment (skew). This is achieved by forcing skew > 0 (minimum skew we would expect in background). This change stops peak mask of IntegratePeaksSkew including too many pixels due to small diffuse scattering (seen in the figure above).
  *   For powder diffraction, the algorithms AlignAndFocusPowder, AlignAndFocusPowderFromFiles, SNSPowderReduction and LoadEventAndCompress were updated to use logarithmic compression, which uses less memory.
  *   For reflectometry, we added a new algorithm PolarizationEfficienciesWildes for calculating the efficiencies of the polarizing components of an instrument with two flippers. This algorithm implements the approach from the A. R. Wildes 2006 paper doi: 10.1080/10448630600668738<https://doi.org/10.1080/10448630600668738>.
  *   For SANS, we added new algorithm PolarizerEfficiency for calculating the efficiency of a polariser.
  *   For Inelastic, renamed tabs of QENS Fitting from MSD Fit, I(Q,t) Fit, ConvFit and F(Q) to MSD, I(Q,t), Convolution and Function(Q) respectively.
  *   For Inelastic, the Elwin Tab of Data Processor Interface now includes access to the Slice Viewer or 3D Plot from the output plot widget of the output workspaces containing more than 1 histogram.
  *   Again for Inelastic, QENS Fitting Interface now allows loading a _Result workspace from the I(Q, t) fitting tab into the Function (Q) fitting tab if one of the fit parameters is A0.
  *   Finally, for developers, the Mantid developer environments are now created using a new mantid-developer Conda meta-package, hosted on our Conda channel. This change does not affect users but greatly simplifies our development process, as package dependencies are now automatically sorted on different operating systems.

Please take a look at the release notes<https://docs.mantidproject.org/nightly/release/v6.11.0/index.html>, which are filled with details of all the changes and improvements in many other areas. The development team has put a great effort into making all of these improvements and we would like to thank all of our beta testers for their time and effort helping us to make this another reliable version. Thank you to everyone that has reported any issues to us and please keep on reporting any problems you have on our forum<https://forum.mantidproject.org/> or by email on mantid-help at mantidproject.org<mailto:mantid-help at mantidproject.org>.



Kind regards,

The Mantid Team


Sarah Foxley
Mantid Team Lead and Engineering Manager
Science and Technology Facilities Council
Phone - 01235 446938
sarah.foxley at stfc.ukri.org<mailto:sarah.foxley at stfc.ukri.org>
She/Her/Hers
[stfc_logo]

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