Version 0.6.1

Version 0.6.1 is a minor capability and bug fix update. Geant4-to-ORANGE
conversion has gained new abilities including:

• Support for reflection
• Support for replicated and parameterized volumes
• New shapes including G4ExtrudedSolid, G4GenericPolycone, G4Paraboloid, polar-truncated sphere
• Fixes and improvements to deduplication of general quadric surfaces such as twisted trap faces and ellipsoids

Geant4 integration has improved with:

• Automatic generation of field maps from in-memory G4Field
• Track IDs are now reconstructed when returning hits to Geant4
• Track weights are propagated through Celeritas and returned to Geant4
• Additional data members are reconstructed in hit track/steps to reduce null pointers
• G4VTrackUserInfo and G4VProcess are reconstructed as valid (but not necessarily meaningful) pointers

Code compatibility improvements include:

• Support for CUDA 12.9 and NVCC with cxxstd=20
• Changes to allow GCC's overzealous -Wmissing-braces (#1863) used by CMSSW
• Fixes to include-what-you-use errors that failed newer compilers/c++ libs
• Support for CMake find_package(Celeritas) multiple times (still discouraged though)
• Allow multiple runs when using GPU
• Improved compatibility for Geant4 10
• Improved use of environment variables (now the value of CELER_DISABLE and others are considered, not just their existence)

Changes since v0.6.0 follow.

New features

• Add default values for track slots and initializer capacity (@amandalund, #1772)
• Complete optical stepping loop (@amandalund, #1792)
• Create IntersectRegion for a convex extruded polygon (@elliottbiondo, #1783)
• Adds Sensitive Detector parameter Class (@lebuller, #1764)
• Print Celeritas configuration options when loading downstream (@sethrj, #1802)
• Make optical max_step_iters configurable and properly reset state after aborting (@amandalund, #1805)
• Add reflection to ORANGE (@sethrj, #1807)
• Add options to forcibly disable Cherenkov and scintillation (@amandalund, #1814)
• Add replica+parameterisation support to ORANGE (@sethrj, #1817)
• Add surface normal calculations in GeoTrackView (@hhollenb, #1804)
• Add WLS model class, generator, and executor and support second WLS process (@amandalund, #1816)
• Support configurable WLS reemission time distribution (@amandalund, #1822)
• Add volume params to represent Geant4 volume graph (@sethrj, #1821)
• Full G4ExtrudedSolid support (@elliottbiondo, #1808)
• Read and export Geant4 surface definitions (@sethrj, #1824)
• Add in-situ cartesian field map construction from Geant4 (@esseivaju, #1828)
• Add geometry surface definitions to runtime (@sethrj, #1812)
• Output optical actions (@amandalund, #1836)
• Add polar truncation for sphere shape (@sethrj, #1832)
• Generate optical photons directly into track slots for 2× GPU speedup (@amandalund, #1844)
• Add track weight propagation to secondaries track (@Rashika-Gupta, #1847)
• Reconstruct Geant4 TrackID (@esseivaju, #1837)
• Update HitProcessor test to support non unit weights (@Rashika-Gupta, #1853)
• Add optical primary generator (@amandalund, #1858)
• Add VolumeSurfaceSelector (@hhollenb, #1859)
• Add pre-commit spell checking (@sethrj, #1867)
• Reconstruct G4VTrackUserInfo and G4VProcess (@esseivaju, #1866)
• Allow multiple "activate device" calls if not modifying device (@sethrj, #1938)
• Add TrackProcessor class for reconstructing Geant4 tracks (@esseivaju, #1869)
• Add RevolvedSpecialTrapezoid as a first step towards G4GenericPolycone (@elliottbiondo, #1840)
• Add full support for G4GenericPolycone (@elliottbiondo, #1892)
• Add support for G4Paraboloid (@elliottbiondo, #1893)
• Support discontinuities in nonuniform grid calculator (@sethrj, #1906)
• Use environment variable values if set (@sethrj, #1937)

Bug fixes

• Patch covfie shasum (@esseivaju, #1771)
• Fix table size in physics construction (@amandalund, #1780)
• Fix and refactor maximum cross section energy calculation for integral approach (@amandalund, #1776)
• Support CUDA 12.9 and NVCC with cxxstd=20 (@sethrj, #1787)
• Fix sincospi on device (@amandalund, #1791)
• Fix assigning parent ID to track initializer (@amandalund, #1795)
• Fix orange polyhedron orientation and roundoff error (@sethrj, #1806)
• Flush optical tracks at the end of core stepping loop (@amandalund, #1834)
• Reconstruct additional data in G4Track (@sethrj, #1835)
• Add null pointer checks for Geant4 surfaces (@sethrj, #1841)
• Fix counters in optical generator action (@amandalund, #1857)
• Protect Celeritas::G4 CMake target against double creation (@drbenmorgan, #1879)
• Fix oversimplification of simple quadrics (@sethrj, #1897)
• Fix normalization and edge cases on twisted GenPrism faces (@sethrj, #1899)
• Fix weight reconstruction for GeantSd (@sethrj, #1940)

Documentation improvements

• Release v0.6.0 (@sethrj, #1688)
• Add helper for accumulating histograms (@sethrj, #1759)
• Add zenodo citations to celeritas user manual (@sethrj, #1762)
• Require covfie v0.14 (@esseivaju, #1767)
• Replace hand-rolled hooks with pre-commit and CI (@sethrj, #1765)
• Refactor micro xs CDF calculation and add test (@amandalund, #1768)
• Edit user manual and fix PDF build (@sethrj, #1782)
• Document geometry hierarchy and move EM table (@sethrj, #1788)
• Round all floating point numbers in test output to a few digits (@sethrj, #1758)
• Work around a doxy/breathe rendering bug and make some notes internal (@sethrj, #1797)
• Replace EXPECT_VEC_CLOSE with soft comparator (@sethrj, #1819)
• Finish updating copyrights (@amandalund, #1820)
• Update build script and user presets (@sethrj, #1845)
• Detect and use ccache (@esseivaju, #1848)
• Revert one unintentional typo change from #1867 (@pcanal, #1871)

Minor internal changes

• Fail early if find-or-builtin package is missing (@sethrj, #1770)
• Remove ValueGridBuilders (@amandalund, #1766)
• Add ostream support for enums (@amandalund, #1774)
• Add missing typename and const to CartMapField (@esseivaju, #1769)
• Apply pre-commit hooks across repository (@sethrj, #1773)
• Rename logspace to geomspace (@sethrj, #1777)
• Use correct types for physics grids (@amandalund, #1781)
• Add tests and documentation for Tsai nuclear screening functions (@sethrj, #1779)
• Adjust version compatibility for covfie (@sethrj, #1778)
• Simplify nested join nodes (@sethrj, #1784)
• Store hardwired model data by reference (@amandalund, #1785)
• Organize optical directory (@amandalund, #1789)
• Move core track initialization to CoreTrackView (@amandalund, #1794)
• Add make_orthogonal helper function (@sethrj, #1793)
• Move magnetic field retrieval to a helper function (@sethrj, #1798)
• Extend auxiliary data helpers to support aux state data without params (@amandalund, #1799)
• Keep persistent GeantGeoParams for geometry translation (@sethrj, #1796)
• Refactor optical generation to reduce duplication (@amandalund, #1800)
• Move optical photon generation to optical stepping loop (@amandalund, #1803)
• Make Geant4 volume IDs consistent wrt load order (@sethrj, #1809)
• Fix configuring against latest VecGeom with CUDA disabled (@pcanal, #1813)
• Rename SurfaceId in preparation for volume-based surface definitions (@sethrj, #1811)
• Rearrange generic geo test interface (@sethrj, #1818)
• Use variant set for uniform field input (@amandalund, #1826)
• Rename solid angle class (@sethrj, #1825)
• Optimize cosine for turn (@sethrj, #1830)
• Refactor solid Z slab as Truncated object (@sethrj, #1827)
• Use start/stop instead of start/interior for azimuthal wedge (@sethrj, #1831)
• Add surface properties to core and optical params (@amandalund, #1838)
• Add a helper function for launching a CPU kernel with an arbitrary number of threads (@amandalund, #1842)
• Define geometry implementation IDs (@sethrj, #1839)
• Add generator interface and registry (@amandalund, #1849)
• Document and improve build script (@sethrj, #1854)
• Hotfix: revert accidental changes from #1839 (@sethrj, #1856)
• Add volume params to core (@sethrj, #1846)
• Add surface physics map (@sethrj, #1852)
• Begin exposing Cherenkov/optical loop outside of the optical collector (@sethrj, #1861)
• IWYU on some files (@sethrj, #1935)
• Convert to using counterclockwise order for polygons (@elliottbiondo, #1873)
• Delete IPAContextException (@sethrj, #1882)
• Use class constructors rather than initialization for Array to fix CMS (@sethrj, #1887)
• Add RevolvedPolygon class (@elliottbiondo, #1888)
• Define throw helper functions to reduce code bloat and improve performance (@sethrj, #1908)
• Update particle speed calculation to be more robust against round-off error (@amandalund, #1917)
• Add custom error handler to unify G4 exception handlers (@sethrj, #1919)

Deprecation and removal

• Remove combined bremsstrahlung model (@amandalund, #1786)
• Remove SpecialTrapezoid and RevolvedSpecialTrapezoid classes (@elliottbiondo, #1890)

Reviewers

• Seth R. Johnson (@sethrj): 50
• Amanda Lund (@amandalund): 30
• Philippe Canal (@pcanal): 13
• Julien Esseiva (@esseivaju): 9
• Elliott Biondo (@elliottbiondo): 9
• Guilherme Lima (@mrguilima): 4
• Soon Yung Jun (@whokion): 2
• Rashika Gupta (@Rashika-Gupta): 2
• Stefano Tognini (@stognini): 1
• Sakib Rahman (@rahmans1): 1
• Lance Bullerwell (@lebuller): 1
• Hayden Hollenbeck (@hhollenb): 1

Full Changelog: v0.6.0...v0.6.1