13.1 Highlights of What’s New in Version 2025.1

Here is a summary of what’s changed since release 2024.1 Historical change logs are collected in Section 13.

13.1.1 Bug Fixes for Elements

• Pelegant no longer hangs on CENTER elements with T=1.
• There was a bug in division of CSBEND elements when tracking-based matrices and edge effects were used, as reported by V. Sajaev (APS).
• Fixed issues with computation of radiation integrals on large closed orbits for CCBEND and LGBEND elements.

13.1.2 Bug Fixes for Commands

• Fixed a bug in the correction_matrix_output command that caused a crash when requesting inverse matrix output with use_response_from_computed_orbits=1.
• The orbit computed by closed_orbit with immediate=1 is now used by twiss_output with output_at_each_step=0. In other words, it is possible to compute the closed orbit and twiss parameters in a self-consistent fashion without a run_control command and following commands.
• The profile output from run_setup had incorrect values in the K2L column, as pointed out by M. Abo-Bakr (HZB).
• The magnet output file from run_setup did not show the sign of K2 values on SEXT or KSEXT elements, as pointed out by forum use Ikpfelix.

13.1.3 New and Modified Elements

• None.

13.1.4 New and Modified Commands

• Trajectory and orbit correction no longer include collective effects calculations, since those were done with single-particle beams and hence lacked validity. In tests, changes were very small.

13.1.5 Changes to Examples

• None.

13.1.6 Changes to Related Programs and Files

The elegant distribution includes many programs and scripts that perform computations with elegant output data, provide interfaces with other programs, or prepare data for use with elegant. These are listed in Section 8.

Changes to these tools in this release include

• The touschekLifetime command allows specifying the number of superperiods, which allows using the rf option with data from a partial lattice. This issue was pointed out by forum user ranamonikaa.
• The ibsEmittance program had a bug in integration mode that gave incorrect results when J_x≠1. This was reported by S. Joly (HZB).