leonarski_f 672840dfb8 beam centre: a walk that adopts nothing is a walk not worth taking
The beam-centre hypothesis ladder runs up to 48 full first-pass indexing
attempts, a pixel at a time, and adopts the first rung that indexes half the
validation frames. When it adopts nothing the centre is restored and the run is
bit-identical to one that never searched, so on those datasets the whole walk is
pure cost - measured at 347 s of the 429 s the loop spends over a 100-dataset
corpus.

Two exits, both measured against the six corpus datasets that enter the walk.
The walk is skipped outright when the background already measures a centre that
is significant at three sigma and further away than the ladder can reach: it
cannot get there, so it only spends the time finding that out. And it stops
after the second ring when the running maximum, the starting centre included, is
below a third of the adoption bar, which separates cleanly on this corpus - the
three walks that adopt nothing peak at 0, 2 and 4 frames, the two that succeed
sit at 17 and 26 by that point.

Every dataset that adopted a centre before still adopts the same one, with the
same cell and the same reflection count; the two that fail still fail with the
same message. The measured saving is 226 s of the 429.
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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.

S
Description
Jungfraujoch Data Acquisition System
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