Add missing GSF mixtureReducer (!67174) · Merge requests · atlas / athena

Tomohiro Yamazaki requested to merge toyamaza/athena:gsfFix into main Nov 16, 2023

This fixes the ACTS GSF crash.

There are still warnings from GSF. (ActsReF...Acts Gaussian Sum RefitGaussianSumFitterWARNING Encountered 7 cases where the material thickness exceeds the range of the Bethe-Heitler-Approximation)

Add missing GSF mixtureReducer

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