Xtrack version 0.4.1

New feature:

• Tracker.find_closed_orbit works also on GPU

Other modifications:

• Slight modifications in example scripts adapting to modified interface of xpart.build_particles(...) and xpart.generate_matched_gaussian_bunch(...)

Xtrack version 0.4.0

Change in the Xsuite package structure:

• The xline package is removed
  • xline.Line becomes xtrack.Line
  • instead of xline.Drift, xline.Multipole etc. use directly xt.Drift, xt.Multipole
  • The Tracker objects are automatically updated when the line is modified (no need to regenerate the tracker)
• There is only one Particles class within Xsuite
  • xline.Partices and xtrack.Particles replaced by xpart.Particles
• The reference python implementation of the main elements, which used to be in xline, is moved to a small package called ducktrack, installed together with xtrack, to be used only for testing purposes (not part of normal simulation workflows)
• Tracker(... sequence= ... ) becomes Tracker(... line= ... )

New feature

• Tracker class has new methods for closed-orbit search and one-turn-matrix calculation with finite differences

Xtrack version 0.3.3

New feature:

• Aperture interpolation now works in the presence of thick and collective elements

Interface modification:

• Isolated elements do not update at_element and at_turn, which are instead handled only by the Tracker objects

Xtrack version 0.3.2

New features:

• Possibility to freeze a subset of particles coordinates during tracking
• pip installation works without -e

Xtrack version 0.3.0

New features:

• .copy method for Particles and BeamElement objects
• Generation of backtracking elements for basic elements
• Generation of backtracker from tracker
• Added new aperture shapes (LimitRectEllipse and LimitPolygon)
• Introduced LossLocationRefinement

Xtrack version 0.2.4

Bugfix:

• Memory leak in particles monitor

Xtrack version 0.2.3

Bugfix:

• Solved issue in Particles.set_particle

Added example:

• Direct check against SixTrack

Xtrack version 0.2.2

New feature

• Introduced random number generator accessible inside kernels

Xtrack version 0.2.1

New features:

• Use non-aligned objects in tracker instances, aligned objects elsewhere
• Use get_test_contexts from xobjects

Xtrack version 0.2.0

New features:

• Added BeamInteraction element to handle processes that produce secondary particles
• Removed num_particles attribute in from Particles class. Replaced with _capacity, _num_active_particles,_num_lost_particles. The last two are updated only on CPU while on gpu the information must be retrieved from Particles.state.

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Other clean up and fixes are also included.