Elegant users forum

The problem is related to the way the BUMPER element aligns the time coordinates of the beam to the time coordinates of the waveform. In particular, it computes <t> for the particles and aligns that to t=0 in the waveform file. If you center your waveform t data about t=0, you should get the results...

It is hard for me to comment without having your files and without knowing how you generated the plots.

The examples file contains an example (straightDipoleModels/lgbend1) for BGGEXP and LGBEND, which may help.

--Michael

Samira,

A skew dipole produces a vertical kick, so just use the YKICK parameter.

--Michael

Minghao, 1. Elastic and inelastic scattering are single-particle phenomena. We can use Pelegant for the simulations to save time. 2. The run1.eslos file contains information on where scattered particles are lost. For each lost particle, it reports the coordinates at the scattering event (s, xp, xp, ...

Thanks for letting me know. A left-handed coordinate system is really odd.

--Michael

Esraa,

There is no St field for marker elements, so you need to use Ss/c, e.g.,
It makes sense to have St for markers. We'll put it in the next release.

--Michael

Version 2026.3 has been released, with several bug fixes and major changes, including * Inclusion of elastic gas scattering in 6D moments computations. * Propagation mode for coupled twiss parameter computation. * Built-in coupling and lattice function correction. * Expansion of spin tracking to mor...

Version 2026.3 has been released, with several major changes, including * Inclusion of elastic gas scattering in 6D moments computations. * Propagation mode for coupled twiss parameter computation. * Built-in coupling and lattice function correction. * Expansion of spin tracking to more elements. De...

Monika,

I tried version 2026.2 (the latest) and it works fine with the attached lattice file.

--Michael

Amal, The main problem is that the TWLA elements are not set up using phase references. If you break a structure into cells, you should use a phase reference to ensure consistent phasing. See the attached file. Even after fixing that, there are problems finding the matrices of the TWLAs, which preve...