Merge pull request #589 from scipp/fast-lut

[essreduce] Fast wavelength lookup table workflow

Author: nvaytet

packages/essreduce/docs/user-guide/unwrap/analytical-unwrap.ipynb

@@ -8,4 +8,5 @@ maxdepth: 1
 frame-unwrapping
 wfm
 dream
+analytical-unwrap
 ```

packages/essreduce/docs/user-guide/unwrap/index.md

@@ -34,7 +34,7 @@ dependencies = [
     "graphviz>=0.20",
     "sciline>=25.11.0",
     "scipp>=26.3.1",
-    "scippneutron>=25.11.1",
+    "scippneutron>=26.5.0",
     "scippnexus>=25.06.0",
     "scipy>=1.14",
 ]

packages/essreduce/pyproject.toml

@@ -9,6 +9,7 @@
 from ..nexus.types import DiskChoppers
 from .lut import (
     BeamlineComponentReading,
+    ChopperFrameSequence,
     DistanceResolution,
     LookupTableWorkflow,
     LtotalRange,
@@ -17,6 +18,7 @@
     PulseStride,
     SimulationResults,
     SimulationSeed,
+    SourceBounds,
     SourcePosition,
     TimeResolution,
     simulate_chopper_cascade_using_tof,
@@ -37,6 +39,7 @@
 
 __all__ = [
     "BeamlineComponentReading",
+    "ChopperFrameSequence",
     "DetectorLtotal",
     "DiskChoppers",
     "DistanceResolution",
@@ -54,6 +57,7 @@
     "PulseStrideOffset",
     "SimulationResults",
     "SimulationSeed",
+    "SourceBounds",
     "SourcePosition",
     "TimeResolution",
     "WavelengthDetector",

packages/essreduce/src/ess/reduce/unwrap/__init__.py

@@ -80,7 +80,7 @@ def psc_choppers():
         "chopper": DiskChopper(
             frequency=sc.scalar(-14.0, unit="Hz"),
             beam_position=sc.scalar(0.0, unit="deg"),
-            phase=sc.scalar(-85.0, unit="deg"),
+            phase=sc.scalar(-105.0, unit="deg"),
             axle_position=sc.vector(value=[0, 0, 8.0], unit="m"),
             slit_begin=sc.array(dims=["cutout"], values=[0.0], unit="deg"),
             slit_end=sc.array(dims=["cutout"], values=[3.0], unit="deg"),