Xtrack version 0.8.0

New features:

• Beam elements can be controlled with xdeps references.
• Deferred expressions controlling beam elements can be imported from MAD-X.
• Additional element properties are transferred to CPU when calling Element.to_dict()
• Change in internal data structure of xtrack.Line: elements are now stored in a dictionary mapping element names to element objects; the sequence of elements is defined by the list of element names. xtrack.Line.elements becomes a read-only property.

Fixes:

• Corrected chromaticity estimates for fractional tunes above the the half integer.
• Tracker.find_closed_orbit ignores Tracker.particle_ref when closed-orbit guess is provided.

Xtrack version 0.7.1

New features

• Qs added to results of Tracker.twiss.
• particle_ref can be optionally attached to the line. In that case it can be omitted when calling Tracker.twiss and Tracker.find_closed_orbit.

Xtrack version 0.7.0

New features:

• Introduced in Tracker element-by-element logging of the particle coordinates
• Improved Tracker.twiss: faster algorithm, introduced integer tunes and phase advances
• Reset s coordinate at the end of each turn

Xtrack version 0.6.3

New feature:

• closed-orbit in LinearTransferMatrix

Xtrack version 0.6.2

New feature:

• Introduced LimitRacetrack

Fix:

• Issue when loading LimitRectEllipse

Xtrack version 0.6.1

Fix:

• Solves issue in conversion of RFMultipole to dictionary

Xtrack version 0.6.0

New features:

• Introduced Tracker.cycle
• Introduced Tracker.twiss
• Introduced Tracker.filter_elements
• Configuration of space-charge lenses is done using Tracker.twiss instead of MAD-X
• Particles for footprint example are generated using xpart
• knl and ksl in Multipole and RFMultipole are linked to bal using xobject.LinkedArray

Other:

• Clean up examples for direct use in documentation
• Tests introduced for mad-x loader, energy ramp, ring with space charge (frozen, quasi-frozen and PIC)
• Added test_data with precisely matched HL-LHC lattice

Xtrack version 0.5.1

Fix:

• Issue in Monitor.to_dict method

Xtrack version 0.5.0

New features:

• Synchrotron radiation (average and stochastic) within Multipole
• Dipolar kicks in electron_lens

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(...)