leonarski_fandClaude Opus 5
10873eee7a
Two defects in the Bravais character walk, both of which silently cost symmetry. An impossible character MATCHED. The walk computes acos(cond_F/sqrt(A*B)); when the character is geometrically impossible the argument leaves [-1,1], acos returns NaN, and the acceptance test fabs(NaN - actual) > tol is FALSE - so the character is taken. One corpus crystal matched a monoclinic-C character whose implied cos(gamma) is 1.086. The type-boundary retry covered beta only. All three angles carry the Niggli boundary, and negating two basis vectors supplements the OTHER two, so each angle needs its own flip. A crystal whose reduced gamma sits at 89.900 degrees needs the alpha/beta flip and never got it. Measured on 84369 exact lattices spanning all 14 Bravais classes: nothing is lost in any class, and orthorhombic-I recovery rises from 60.3% to 87.2%. Over 440000 random and perturbed cells the first change only ever demotes a monoclinic-C match to triclinic and the second only ever promotes out of triclinic - it is a strict superset of the beta-only retry. On the 94-dataset corpus, two crystals gain their correct point group and none regresses. Both regression tests fail without the change. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Lc5JG6kJqZoCWaoZ43JGTW
Jungfraujoch
Application to receive data from the PSI JUNGFRAU and EIGER detectors.
All documentation is now placed in docs/ subdirectory and for the current version hosted on Jungfraujoch Read The Docs page.