Xtrack version 0.90.0

Changes:

• Environment.particles can be used to store a set of reference particles that can be associated to lines or environments and can be controlled with variables.
• Drift element now has a model attribute that allows choosing between the exact and the expanded map.
• Add isthick column to SurveyTable.
• Add rigidity0 property to Particles class.

Full Changelog: v0.89.4...v0.90.0

Xtrack version 0.89.4

Changes:

• Raise error when attempting 4d twiss with radiation on
• Keep cavities on when correcting closed orbit
• Support additional element types in Environment.new(...)

Full Changelog: v0.89.4...v0.89.4

Xtrack version 0.89.3

Changes:

• Use runtime flags instead of compile flags for backtracking
• Fix in LossLocationRefinement
• Fix in Cavity properties

Full Changelog: v0.89.2...v0.89.3

Xtrack version 0.89.2

Changes:

• Use runtime flags instead of separated track kernels for tapering and twiss with radiation.
• Fix in track kernel used by isolated elements.
• Fix in coupling calculation (adjust tolerance for no coupling detection)

Full Changelog: v0.89.1...v0.89.2

Xtrack version 0.89.1

Changes:

• Fix in Edwards-Teng coupling calculation
• Support DriftSlice in MAD-NG interface
• Use analytic expression of uncoupled W matrix when resolving initial conditions for Twiss
• Use runtime flag instead of compile flag to disable cavity kick in 4d Twiss calculation

Full Changelog: v0.89.0...v0.89.1

Xtrack version 0.89.0

Changes:

• Implement additional misalignment capabilities (X rotation, Y rotation) in all elements. Rotations can be applied using an arbitrary point as center. Correction on the time coordinates is implemented.
• Change algorithm for computation of Edwards-Teng coupling coefficients.
• Implement CrabCavity element. The new element is thick and supports slicing.
• Cavity becomes a thick element (old behavior can be obtained by setting zero length). It supports slicing.
• Multipole can optionally be a thick element and supports slicing. MAD-X kickers are imported thick multipoles.
• MAD-X and MAD-NG writers adapted to new elements.

Full Changelog: v0.88.8...v0.89.0

Xtrack version 0.88.8

Changes:

• Fix: plotting issues with Line.twiss(at_s=...)

Full Changelog: v0.88.8...v0.88.8

Xtrack version 0.88.7

Changes:

• UniformSolenoid and VariableSolenoid support arbitrary shift of the solenoid axis (x0, y0). Multipolar components remain centered in (0,0).
• Handle initial condition on kinetic momenta in Line.twiss(...)

Full Changelog: v0.88.6...v0.88.7

Xtrack version 0.88.6

Changes:

• Fix in BeamElement metaclass

Full Changelog: v0.88.5...v0.88.6

Xtrack version 0.88.4

Changes:

• Refactor python code for slice elements
• Adapt examples and tests to use xt.load(...) and Environment.var.load(...) instead of individual methods for madx, json and python files

Full Changelog: v0.88.3...v0.88.4