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feat: v0.4.0 package restructuring — split into 4 modules

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Separate monolithic beta_spectrum package into:
  beta_spectrum   — pure theory (components, spectrum, CLI, visualize)
  exp_data        — experimental data handling (spectrum, calibration,
                    fitters, corrections)
  fitter          — analysis framework (model, fit_engine, extractor,
                    result)
  beta_spectrum.visualize — plotting (BetaSpectrumAnalyzer)

Phase 1 — exp_data module:
  ExpSpectrum dataclass with metadata, normalization, serialization
  EnergyCalibrator (linear/quadratic calibration)
  GaussianFitter + PeakFitter for calibration sources
  DeadTimeCorrection, PileUpCorrection, BackgroundSubtractor
  43 new tests, ruff + mypy clean

Phase 2 — fitter module:
  SpectrumModel wraps BetaSpectrum + DetectorResponse with convolution
  SpectrumFitter with χ² minimization, covariance, profile likelihood,
  confidence intervals, robust loss functions
  CWExtractor + GVAExtractor for C(W) and g_V/g_A extraction
  AnalysisResult + FitSummary for physics-specific results
  CurveFitter general-purpose callable model fitter
  34 new tests, ruff + mypy clean

Phase 3 — clean up beta_spectrum:
  Remove cw_extractor.py and fitter.py (moved to fitter/)
  Clean __init__.py to export only theory classes
  Add backward-compat methods to CWExtractor
  Fix BetaSpectrumAnalyzer._get_branch_spectrum returning BetaSpectrum
  objects instead of numpy arrays (plot fix)

Phase 4 — package structure:
  Auto-discovered by setuptools (4 packages)
  All imports updated across 26 source files
  Black formatting applied
  322 tests pass (262 original + 60 new)
  ruff + mypy clean on all source files

Bug fixes:
  - Fix multi-branch spectrum plotting: universal component keys
    (Fermi, Screening, etc.) don't have per-branch prefix; fixed
    fallback lookup.
  - Fix negative phase space beyond endpoint: BetaSpectrum returns
    negative values for W > W0; clamp branch spectra to zero.
This commit is contained in:
unzhakov
2026-05-17 18:58:04 +03:00
parent 745bbae4cd
commit 38b44b56e6
29 changed files with 3538 additions and 2010 deletions
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exp_data/__init__.py
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"""
Experimental data handling for beta spectrometry.
Provides tools for loading, calibrating, and pre-processing
experimental spectra from detector readouts.
"""
from .spectrum import ExpSpectrum
from .calibration import EnergyCalibrator
from .fitters import GaussianFitter, PeakFitter
from .corrections import (
DeadTimeCorrection,
PileUpCorrection,
BackgroundSubtractor,
)
__all__ = [
"ExpSpectrum",
"EnergyCalibrator",
"GaussianFitter",
"PeakFitter",
"DeadTimeCorrection",
"PileUpCorrection",
"BackgroundSubtractor",
]