PyAT 0.5.0

Main changes

• A new cleaner interface for tracking is introduced: the new functions lattice_track and element_track, and the equivalent methods Lattice.track and Element.track, replace lattice_pass, element_pass and patpass. The old functions are still available,

• Radiation tapering is corrected. It is based on a new attribute FieldScaling added to all magnet passmethods,

• New elements are available: "beamloading cavity", "energy loss".

• A set of new "exact" integrators is introduced: ExactDriftPass, ExactMultipolePass, ExactSectorBendPass, ExactRectangularBendPass.

• The physical constants used in the C integrators have been updated to the CODATA 2018 values. The values used in python come form scipy.constants and were already up-to-date. So because of an update of the Cγ constant,

  results related to radiation and slightly different from the previous values.

New features

• Scattering rate by @swhite2401 in #624
• Introduction of an "energy loss" element by @lfarv in #632
• refpts offset for acceptance by @swhite2401 in #639
• New interface to tracking functions by @swhite2401 in #608
• Display the name of selected elements in plots by @lfarv in #641
• Chromatic functions extended by @swhite2401 in #644
• Correct Dipole tapering by @swhite2401 in #623
• Simple ring model by @lcarver in #643
• Add passive beamloading cavity by @lcarver in #586
• Optimize atimplib by @swhite2401 in #658
• New integrators: ExactDriftPass, ExactMultipolePass by @lfarv in #581
• Create BndStrMPoleSymplectic4RadPass by @catohxb in #665
• parallelize get_tunes_harmonic by @swhite2401 in #681
• Update and centralize the C constants by @JeanLucPons in #691

Bug fixes

• Fix the creation of .mat files by @lfarv in #627
• deprecates ncpu; use pool_size by @oscarxblanco in #631
• Remove a deprecation warning in numpy 1.25 by @lfarv in #626
• Remove the warning when calling plot_beta in transfer line mode by @lfarv in #638
• Correct the axis definition in plot_sigma by @lfarv in #648
• The DPStep keyword in linopt6 raises an error for 4D lattices by @lfarv in #651
• Remove collective passes from internal lattice_pass by @swhite2401 in #650
• Fix attribute names in Simple Ring by @lcarver in #655
• Error parsing args for twiss_in and r_4d by @lcarver in #662
• Collective bugfix by @lcarver in #664
• Parallel lattice_track bugfix and help by @swhite2401 in #675

New Contributors

• @oscarxblanco made their first contribution in #631
• @catohxb made their first contribution in #665
• @JeanLucPons made their first contribution in #691

Full Changelog: pyat-0.4.0...pyat-0.5.0