Xtrack version 0.54.1

Changes:

• Fixes for prebuilt kernels attached to elements.
• Respect the priority of prebuilt kernels according to the order they are defined.

Full Changelog: v0.54.0...v0.54.1

Xtrack version 0.54.0

Changes:

• Add examples for adding tilt or shifts on compound elements.
• Add capability of reinitializing io_buffer when logging is stopped.
• Add capability to cut a thick line at specific s position (Line.cut_at_s).
• Introduce Custom slicing strategy.
• Introduce Line.to_madx_sequence() and Line.to_madng().
• Introduce Quadrupole(..., k1s, ...), Octupole.
• Multispecies tracking supported for Drift, Bend, Quadrupole, Sextupole, Octupole, Multipole, RFCavity, DipoleEdge .
• Fix YRotation (beta confused with beta0).
• Moved Particles class from Xpart to Xtrack.
• Removed ParticlesPurelyLongitudinal.
• Use Jacobian to search closed orbit.
• Add Xcoll elements to prebuilt.

Full Changelog: v0.52.0...v0.54.0

Xtrack version 0.52.0

Changes:

• Introduce Line.transform_compound(...) method to introduce tilt and shifts of elements
• Introduce computation of transverse momentum crab dispersion (dpx_zeta, dpy_zeta).
• Fix in Line.optimize_for_tracking(...) for lines embedded in Multiline objects.
• Fix in twiss for calculation of chromatic properties of line portions.
• Fix in import of Octagon elements form MAD-X.

Full Changelog: v0.51.1...v0.52.0

Xtrack version 0.51.1

Changes

• Add possibility to log variables and other quantities at each turn.
• Add possibility to extract a view on the merit function from Optimize objects
• Adapt to updated nafflib.

Full Changelog: v0.51.0...v0.51.1

Xtrack version 0.51.0

Changes:

• Second order dispersion and second order chromaticity added to twiss result.
• Add chromatic properties to allowed keyword arguments for optimization targets.
• Search for off-momentum closed orbit when computing chromatic properties in twiss.
• Closed orbit search performed with Jacobian optimizer instead of numpy fsolve.
• Possibility to use the optimizer on a generic callable.
• Implement solenoid backtrack.

Full Changelog: v0.50.1...v0.51.0

Xtrack version 0.50.1

Changes:

• Change names in tracking loop counters to avoid name clashes.
• Sort class names alphabetically when building tracker.

Full Changelog: v0.50.0...v0.50.1

Xtrack version 0.50.0

Changes

• Yoshida integrator implemented within Bend elements, providing accurate model for combined function magnets. Users can choose model among adaptive, expanded, bend-kick-bend, rot-kick-rot. The default model becomes adaptive which computes uses the rot-kick-rot scheme with a number of Yoshida slices adapted to the bend curvature.
• Removed CombinedFunctionMagnet which can now be modeled by a Bend.
• Removed multipolar_kicks from Quadrupole.
• Implemented Line.get_non_linear_chromaticity(...)

Full Changelog: v0.49.0...v0.50.0

Xtrack version 0.49.0

Changes

• Add method EnergyProgram.get_kinetic_energy0_at_t_s(...).
• Add method Line.get_amplitude_detuning_coefficients(...).
• Change Line.twiss(...) argument names: ele_start becomes start, ele_stop becomes end, twiss_init becomes init, ele_init becomes init_at, ele_co_search becomes co_search_at.
• Renamed TwissTable.betz0 to TwissTable.bets0.
• xdeps manager initialized by default when creating a line.
• Add possibility to define optimization targets from line or vars through Line.target(...) or Line.vars.target(...).
• Add possibility to define optimization targets from existing twiss tables through TwissTable.target(...).]
• In Line.match remove preserve, preserve_start, preserve_stop, user can pass a twiss table instead.
• Add method Optimizer.tag(...).
• Remove LinearTransferMatrix (was already deprecated).
• Rename amplitude detuning coefficients in the LineSegmentMap element (detx_x becomes det_xx, detx_y becomes det_xy, etc…).
• Thick elements allowed by default when importing from MAD-X.
• Add dependency on pandas.
• Improvements and updates in many examples.

Full Changelog: v0.48.2...v0.49.0

Xtrack version 0.48.2

Changes:

• Fix issue with reference energy change in LineSegmentMap

Full Changelog: v0.48.1...v0.48.2

Xtrack version 0.48.1

Changes:

• Fix in element insertion
• Update spacecharge examples and sps spacecharge test data.

Full Changelog: v0.48.0...v0.48.1