Output of the strip centroid alignment, the post-gain calibration step. More...

#include <CalibrateBeam.hpp>

Public Attributes
Bool_t	ok = kFALSE
	Whether the step produced usable results.
Double_t	factors [18] = {}
	Per-strip multiplicative alignment factors, applied to every end.
Double_t	offsets [18] = {}
	Per-strip additive offsets in calibrated units, applied after the factor to the strip total; EnergyView carries each on the strip's long end.
Double_t	centroids [18] = {}
	Measured beam peak per strip before alignment, in calibrated units.
Double_t	pileups [18] = {}
	Measured two-particle pile-up peak per strip before alignment, in calibrated units; 0 where none was found.

Detailed Description

Output of the strip centroid alignment, the post-gain calibration step.

Decodes events with the per-channel gains already applied and locates two peaks in each strip's smoothed total (0.005 a.u. bins, parabolic sub-bin refinement, no fit): the beam and the two-particle pile-up, which is exactly twice the beam. The strip is then put on the scale total' = factor * total + offset that has the beam at 1.0 and the pile-up at 2.0. The second point is what separates the gain from a baseline offset, which a beam-only anchor cannot do. A strip whose pile-up peak is not found keeps a factor-only alignment, 1 / beam.

Note: Runs after the anchor reduction and after the initial calibration tree is written — it needs that tree on disk so EnergyView can decode. The factors are then stored back into the calibration tree and applied by EnergyView to every end of a strip after the per-channel gain.

Definition at line 115 of file CalibrateBeam.hpp.