Xtrack version 0.16.0

Changes:

• Removed dress_element function. Now there is only one mechanism to create beam elements which is to inherit from the BeamElement class.
• Across the package xobjects.DressedStruct has been replaced with xobjects.HybridClass following update in xobjects.
• Introduced pipeline features (preparation for strong-strong beam beam simulations):
  • Collective elements can put the tracking on hold;
  • Tracker handles the hold condition and can resume the tracking when the Tracker.resume method is called;
  • Introduced PipelineMultitracker objects to handle multiple ongoing tracking sessions.
• Introduced custom per-particle kernels attached to beam elements.
• Regenerated all json files in test_data folder following refactoring of beam-beam classes in xfields.
• Introduced _arr2ctx internal method to transfer arrays to context if needed.
• extra_sources are now specified as member of the BeamElement class and not attached a posteriori to the XoStruct as done before.
• Adapted ducktrack to setup beam-beam elements from dictionaries produced with he new data structure implemented in xfields.

Xtrack version 0.15.0

Changes:

• knl and ksl stored directly in Multipole and RFMultipole data structures (instead of bal). Improves significantly the speed when these are changed dynamically in the simulation.
• Restored set of canonically conjugate variables in R matrix, now using (x, px, y, py, zeta, pzeta)

Xtrack version 0.14.5

New feature:

• Possibility to skip kernel compilation when creating tracker (to access the source without compiling)

Xtrack version 0.14.4

Changes:

• Add copyright statement to all files
• Add license file
• Add metadata in setup.py

Xtrack version 0.14.0

Change:

• Definition of longitudinal coordinate zeta changed from zeta = s beta/beta0 - beta c t to zeta = s - beta0 c t.

Xtrack version 0.13.0

New features:

• io_buffer and internal records for data logging inside beam elements
• Logging of emitted photons in Multipole
• possibility to unfreeze a line (invalidating the associated tracker)
• Fix in synchrotron radiation

Xtrack version 0.12.0

Changes:

• Introduced FirstOrderTaylorMap.
• Tracker can start and stop at any element of the line both in collective and non-collective mode.
• LossLocationRefinement by default allows backtracking only through a restricted list of element types.
• Fix initialisation fo random number generation by Tracker in collective mode.
• Preserve order of elements at the same s coordinate when imported from MAD-X.
• Import polygon aperture from MAD-X.
• Import deferred expressions from MAD-X in Wire element.
• Moved generation of Line from sixtrack input to sixtracktools package.

Xtrack version 0.11.4

Changes:

• Adapt to Xdeps v0.0.5 API
• Removed default to zero for variables used in Xdeps expressions (default is disabled after MAD-X import)

Xtrack version 0.11.3

Changes:

• Introdude multi-frame mode in ParticlesMonitor
• Added examples for ParticlesMonitor usage

Xtrack version 0.11.2

Fix:

• Particles of species different from the reference particle correctly propagated in LossLocationRefinement