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<div class="WordSection1">
<p class="MsoNormal"><i><span lang="SV" style="font-size:11.0pt;color:#1F497D">Dear Members of the SasView User List,</span></i><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D">We hope this email finds you safe and well and once again pushing back the frontiers of your science as the restrictions of the pandemic continue to ease.</span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="SV" style="font-size:11.0pt;color:#1F497D">GENERAL NEWS</span></b><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D">It is almost 6 months since we solicited your help in helping to test the first release candidate (rc1) of SasView 5.0.5, and we are now delighted to say that we have finally released
it (see below for further details)! The testing threw up an assortment of issues that, with our limited resources, inevitably took time to rectify, but we have learnt some valuable lessons in the process.</span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D">Version 5.0.5 is still just short of achieving feature-parity with SasView 4.x, but we are now very close and can see the end of the road. So we would like to take this opportunity
to encourage and remind any of you still using SasView 4.x to start actively making the transition to SasView 5.x.
<i>There is no active development of SasView 4.x, there has not been any for several years, and nor do we now envisage any in the future.</i></span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D">That said, moving to SasView 5.x will have consequences for some of you, particularly those of you using Mac’s. In some instances the only way you will be able to run SasView 5.x will
be to update your Mac OS or update your Mac. Unfortunately, the need for this is something that is simply beyond our control.</span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D">There is some good news for those of you that wish to use SasView on Linux. We recently learnt that Maksim Rakitin at the NSLS-II had been producing 64-bit conda packages of SasView
for Linux <i>and OSX</i>. If these are of interest, please visit <a href="https://github.com/SasView/sasview/wiki/Conda-installation">
https://github.com/SasView/sasview/wiki/Conda-installation</a>. And we remind you that for some years now, Stuart Prescott & Drew Parson have been maintaining a Debian implementation of SasView. You can find links to this on our Wiki at
<a href="https://github.com/SasView/sasview/wiki/DevNotes_Projects_Debian">https://github.com/SasView/sasview/wiki/DevNotes_Projects_Debian</a>.</span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D">The time spent finalising this new release has naturally impacted progress elsewhere in the collaboration, and so things like the paper on SasView are still not finished. However, there
are also some positive developments to report:</span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:54.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo1">
<![if !supportLists]><span lang="SV"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="SV" style="font-size:11.0pt;color:#1F497D">We are very pleased to welcome a new developer to the collaboration. Lucas Wilkins is based in the new Research Software Engineering Team at ISIS and will spend up to 80%
of his time working on SasView.</span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:54.0pt"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:54.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo1">
<![if !supportLists]><span lang="SV"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="SV" style="font-size:11.0pt;color:#1F497D">Annika Stellhorn at Lund University has put together an in-person
<a href="https://www.linxs.se/events/2022/6/13/linxs-workshop-magnetic-sans-data-analysis-and-software-prospects">
Workshop</a> in Lund later this month to explore what additional developments in SasView would be beneficial for the Magnetic-SANS community. This kind of community-led endeavour is something the Development Team is very pleased to see and encourage.</span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoListParagraph"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:54.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo1">
<![if !supportLists]><span lang="SV"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="SV" style="font-size:11.0pt;color:#1F497D">And the Magnetic-SANS Workshop will be followed by a 3-day ‘<a href="https://indico.esss.lu.se/event/3009/">new contributor event</a>’ for those who want to learn more about
the structure of the SasView codebase and how to pursue their own developments.</span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoListParagraph"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:54.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo1">
<![if !supportLists]><span lang="SV"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="SV" style="font-size:11.0pt;color:#1F497D">We have also added a couple of new videos to our
<a href="https://www.youtube.com/channel/UCxvD3ysXJ05l6MgY7YKjEFQ">YouTube channel</a> in the past year. Why not take a look!</span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="SV" style="font-size:11.0pt;color:#1F497D">NEW RELEASE</span></b><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D">The Development Team is pleased to announce the release of SasView 5.0.5, available for download as usual through the website at
<a href="http://www.sasview.org">www.sasview.org</a>.</span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D">This release fixes several issues:</span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoNormal" style="mso-list:l1 level1 lfo2;background:white"><span lang="SV" style="font-size:11.0pt;color:#1F497D">The long standing issue with the Levenberg-Marquardt optimiser not respecting parameter bounds has been resolved by the move to a later
version of the Bumps package.</span><span lang="SV" style="font-family:"Times New Roman",serif"><o:p></o:p></span></li></ul>
<p style="mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:0cm;margin-left:36.0pt;margin-bottom:.0001pt;background:white;box-sizing: border-box">
<span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoNormal" style="mso-list:l1 level1 lfo2;background:white"><span lang="SV" style="font-size:11.0pt;color:#1F497D">A bug which prevented the
<i>radius_effective</i> parameter from being updated in <i>P(Q)</i>*<i>S(Q)</i> models when the data were resolution smeared has been fixed.</span><span lang="SV" style="font-family:"Times New Roman",serif"><o:p></o:p></span></li></ul>
<p style="margin:0cm;margin-bottom:.0001pt;background:white;box-sizing: border-box">
<span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoNormal" style="mso-list:l1 level1 lfo2;background:white"><span lang="SV" style="font-size:11.0pt;color:#1F497D">A bug that prevented the formation of composite mixture models with multiplicity (for example, models such as
<i>core_multi_shell </i>* <i>hardsphere</i> + <i>cylinder</i> or <i>core_multi_shell</i> @
<i>hardsphere</i> + <i>cylinder</i>) has been fixed.</span><span lang="SV" style="font-family:"Times New Roman",serif"><o:p></o:p></span></li></ul>
<p style="margin:0cm;margin-bottom:.0001pt;background:white;box-sizing: border-box">
<span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoNormal" style="mso-list:l1 level1 lfo2;background:white"><span lang="SV" style="font-size:11.0pt;color:#1F497D">The button to reset the selected Q-limits for fitting now works again!</span><span lang="SV" style="font-family:"Times New Roman",serif"><o:p></o:p></span></li></ul>
<p style="margin:0cm;margin-bottom:.0001pt;background:white;box-sizing: border-box">
<span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoNormal" style="mso-list:l1 level1 lfo2;background:white"><span lang="SV" style="font-size:11.0pt;color:#1F497D">There has been a technical change to the point in the calculation at which the volume normalisation of
<i>P(Q)</i>*<i>S(Q)</i> models is applied by the move to a later version of the Sasmodels package. This change was actually incorporated into v5.0.4 but due to an oversight was omitted from the release notes at the time, although a note was added to the web
version after the release. In most instances this change will go un-noticed unless you happen to be plotting the individual contributions of
<i>P(Q)</i> or <i>S(Q)</i> and comparing them with similar calculations performed in versions of SasView before v5.0.4, at which point the scaling of the functions will be seen to be different.</span><span lang="SV" style="font-family:"Times New Roman",serif"><o:p></o:p></span></li></ul>
<p style="margin:0cm;margin-bottom:.0001pt;background:white;box-sizing: border-box;font-variant-ligatures: normal;font-variant-caps: normal;orphans: 2;text-align:start;widows: 2;-webkit-text-stroke-width: 0px;text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;word-spacing:0px">
<span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt;background:white"><span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">There are also some <strong><span style="font-family:"Calibri",sans-serif">new features</span></strong> in this
version. Most notably:</span><span lang="SV"><o:p></o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt;background:white"><span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoNormal" style="mso-list:l2 level1 lfo3;background:white"><span lang="SV" style="font-size:11.0pt;color:#1F497D">The Generic Scattering Calculator Tool has been overhauled and its capabilities significantly expanded. In particular, it will now
perform magnetic/polarised SANS computations. As part of this upgrade, coordinate data in some VTK formats are now also supported.</span><span lang="SV" style="font-family:"Times New Roman",serif"><o:p></o:p></span></li></ul>
<p style="mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:0cm;margin-left:36.0pt;margin-bottom:.0001pt;background:white;box-sizing: border-box">
<span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoNormal" style="mso-list:l2 level1 lfo3;background:white"><span lang="SV" style="font-size:11.0pt;color:#1F497D">The data loaders have also been improved. SasView will now read CanSAS1D XML data files with multiple</span><span lang="SV" style="font-size:11.0pt;color:#404040"> </span><code><span lang="SV" style="font-size:10.0pt;color:#C7254E;background:#F9F2F4"><SASdata></span></code><span lang="SV" style="font-size:11.0pt;color:#404040"> </span><span lang="SV" style="font-size:11.0pt;color:#1F497D">blocks
in a single</span><code><span lang="SV" style="font-size:10.0pt;color:#1F497D;background:#F9F2F4"> </span></code><code><span lang="SV" style="font-size:10.0pt;color:#C7254E;background:#F9F2F4"><SASentry></span></code><span lang="SV" style="font-size:11.0pt;color:#404040">.
</span><span lang="SV" style="font-size:11.0pt;color:#1F497D">And, by popular demand, 1D data can now be saved in CSV format. SESANS data files with the extension .sesans are now also recognised.</span><span lang="SV" style="font-family:"Times New Roman",serif"><o:p></o:p></span></li></ul>
<p style="margin:0cm;margin-bottom:.0001pt;background:white;box-sizing: border-box">
<span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoNormal" style="mso-list:l2 level1 lfo3;background:white"><span lang="SV" style="font-size:11.0pt;color:#1F497D">A Boucher-type interfacial profile function has been added to the spherical_sld model.</span><span lang="SV" style="font-family:"Times New Roman",serif"><o:p></o:p></span></li></ul>
<p style="margin:0cm;margin-bottom:.0001pt;background:white;box-sizing: border-box;font-variant-ligatures: normal;font-variant-caps: normal;orphans: 2;text-align:start;widows: 2;-webkit-text-stroke-width: 0px;text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;word-spacing:0px">
<strong><span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span></strong><span lang="SV"><o:p></o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt;background:white"><strong><span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">New Models</span></strong><span lang="SV"><o:p></o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt;background:white;box-sizing: border-box;font-variant-ligatures: normal;font-variant-caps: normal;orphans: 2;text-align:start;widows: 2;-webkit-text-stroke-width: 0px;text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;word-spacing:0px">
<span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The following models have been added to the</span><span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#404040"> <a href="http://marketplace.sasview.org/"><span style="color:#008AFF">Model
Marketplace</span></a> </span><span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">since v5.0.4 was released:</span><span lang="SV"><o:p></o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt;background:white"><span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<ul style="margin-top:0cm;box-sizing: border-box;font-variant-ligatures: normal;font-variant-caps: normal;orphans: 2;text-align:start;widows: 2;-webkit-text-stroke-width: 0px;text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;word-spacing:0px" type="disc">
<li class="MsoNormal" style="color:#1F497D;mso-list:l0 level1 lfo4;background:white;box-sizing: border-box">
<span lang="SV" style="font-size:11.0pt">Magnetic Whirl</span><span lang="SV"><o:p></o:p></span></li><li class="MsoNormal" style="color:#1F497D;mso-list:l0 level1 lfo4;background:white;box-sizing: border-box">
<span lang="SV" style="font-size:11.0pt">Maier-Saupe distribution</span><span lang="SV"><o:p></o:p></span></li><li class="MsoNormal" style="color:#1F497D;mso-list:l0 level1 lfo4;background:white;box-sizing: border-box">
<span lang="SV" style="font-size:11.0pt">Cyclic Gaussian distribution</span><span lang="SV"><o:p></o:p></span></li><li class="MsoNormal" style="color:#1F497D;mso-list:l0 level1 lfo4;background:white;box-sizing: border-box">
<span lang="SV" style="font-size:11.0pt">Superball Model - Neither Sphere nor Cube</span><span lang="SV"><o:p></o:p></span></li><li class="MsoNormal" style="color:#1F497D;mso-list:l0 level1 lfo4;background:white;box-sizing: border-box">
<span lang="SV" style="font-size:11.0pt">OrientedMagneticChains</span><span lang="SV"><o:p></o:p></span></li></ul>
<p style="margin:0cm;margin-bottom:.0001pt;background:white;box-sizing: border-box;font-variant-ligatures: normal;font-variant-caps: normal;orphans: 2;text-align:start;widows: 2;-webkit-text-stroke-width: 0px;text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;word-spacing:0px">
<strong><span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span></strong><span lang="SV"><o:p></o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt;background:white"><strong><span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Known Issues</span></strong><span lang="SV"><o:p></o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt;background:white;box-sizing: border-box;font-variant-ligatures: normal;font-variant-caps: normal;orphans: 2;text-align:start;widows: 2;-webkit-text-stroke-width: 0px;text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;word-spacing:0px">
<span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The ‘rpa’ (Random Phase Approximation, for polymer scattering) model has been temporarily withdrawn. Some gremlins had crept into how the model parameters interacted with
the Fit Page which meant you were not performing the calculation you thought you were. This is being investigated. Should you need it, a separate binary blend model (the most performed calculation) is available from the</span><span lang="SV" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#404040"> <a href="http://marketplace.sasview.org/"><span style="color:#008AFF">Model
Marketplace</span></a> .</span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D">Of course, as always, there remain many things that could be added, improved or, sadly, that need fixing. So please continue to provide feedback, bug reports (issues), and, when possible,
fixes, either to the code or the documentation or tutorials, as GitHub pull requests, for those who can, or by simply emailing
<a href="mailto:help@sasview.org">help@sasview.org</a>.</span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="SV" style="font-size:11.0pt;color:#1F497D">FUTURE PLANS</span></b><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D">It is likely that some of the Development Team will be present at
<i>SAS 2022</i> this September. If you are also heading there, please do take the opportunity to look us up and say ‘Hello’!</span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D">Thank you for your continued support!</span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><i><span lang="SV" style="font-size:11.0pt;color:#1F497D">The SasView Development Team</span></i><span lang="SV"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV" style="font-size:11.0pt;color:#1F497D"> </span><span lang="SV"><o:p></o:p></span></p>
</div>
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