madx-ptc-utils 0.1.4

Uses MAD-X PTC to convert a MAD-X lattice to a Python object

madx-ptc-utils

Converts MAD-X sequences into callable python functions using the built in PTC functions in MAD-X.

Instructions

First have a .madx file that contains a sequence and beam info you want to convert to python (mylattice.madx).

Run the command

create-ptc-files path/to/mylattice.madx --ptc-order PTC_ORDER --ptc-dim PTC_DIM

A folder will be created in ./out which contains the PTC data for the map.

From you python code have the import statement from python_from_ptc import python_from_ptc.

Pass the path of the PTC folder in ./out to the function to get a callable python function.

PTC does not support all elements. Some of these elements can be removed without affecting the PTC lattice. To comment them out use the rm-keyword command. For example if you wanted to remove quadrupoles from mylattice.madx

rm-keyword path/to/mylattice.madx quadrupole

Any number of keywords can be given after the filename.

Note

It is sometimes best to run the program in the directory of the lattice file if it contains calls to other files.

create-ptc-files only supports 4-D and 6-D lattices. 4-D supports up to a PTC order of 19 while 6-D supports up to PTC order 9.

rm-keyword will NOT discriminate elements that affect the PTC data, use carefully.