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<p>Folks,</p>
<p>Richard has produced a new version of HDGeant4 that supports
built-in generation of Bethe-Heitler muon pairs. It is <a moz-do-not-send="true" href="https://github.com/JeffersonLab/HDGeant4/releases/tag/2.25.0">version
2.25.0</a>.</p>
<p>There is a new version set that has the new HDGeant4 on-board. It
is <a moz-do-not-send="true" href="https://halldweb.jlab.org/halld_versions/version_4.42.0.xml">version
set 4.42.0</a>. It is built at JLab and is available now. It
will become the default at JLab at midnight tonight.</p>
<p> -- Mark</p>
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