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

Xtrack version 0.48.0

Changes:

• New features in Line.twiss:
  • Initial conditions can be provided at any point in the selected range.
  • Initial conditions can be provided as keyword arguments, e.g. line.twiss(ele_start='ip8', ele_stop='ip2', ele_init='ip1', betx=1., bety=2.).
  • Twiss range can extend across the end of the line (useful to avoid unnecessary line cycle).
  • ele_co_search can be provided to periodic twiss to perform the closed orbit search at a given point in the line (instead of start line). Useful to avoid failures when large orbit bumps extend across the start of the line.

Xtrack version 0.47.2

Changes:

• Fix in skew quadrupole import from MAD-X.
• Rename Line.vars.load_madx_optics_file to Line.vars.set_from_madx_file (both are kept).

Full Changelog: v0.47.1...v0.47.2

Xtrack version 0.47.1

Changes:

• Fix: handle uninitialized variables in load_madx_optics_file

Xtrack version 0.47.0

Changes:

• Introduce multi-turn closed solution search in twiss.
• Replace particle_co_guess with co_guess (can be also a dict).
• Fix for handling MAD-X expressions including arrows.

Full Changelog: v0.46.5...v0.47.0

Xtrack version 0.46.5

Changes:

• Add a workaround for issue with progress bar in notebooks.
• Fix issues with the default turn by turn monitor when tracking with the progress bar
• Fix issues with ele_start, ele_stop when tracking with the progress bar

Full Changelog: v0.46.3...v0.46.5

Xtrack version 0.46.4

Changes:

• Introduce ParticlesInjectionSample element.
• Fix issue with line save/reload when energy_program is set.
• Disable notebook progress indicator due to issue in underlying library (fall back on terminal).
• Reset _t_last_update_time_dependent_vars if tracking is restarted.
• Fix issue with progress time_last_track when progress bar is active.

Full Changelog: v0.46.3...v0.46.4

Xtrack version 0.46.3

Changes:

• Fix in tapering (correct behavior in case probe particle is lost in preliminary check).
• Fix in LineSegmentMap for frozen longitudinal motion.
• Small ring example

Full Changelog: v0.46.2...v0.46.3