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Description:

LatticeJSON 0.1.6

LatticeJSON
LatticeJSON is a JSON based lattice file format. JSON is able to describe complex data structures,
has a human readable syntax and is available in all common programming language. It is therefore an
appropriate choice to characterize the magnetic lattice of a particle accelerator.
Specification
This repository contains the
Specification of LatticeJSON
in form of a JSON Schema.
Example
A LatticeJSON file for a FODO lattice:
{
"version": "2.2",
"title": "FODO Lattice",
"info": "This is the simplest possible strong focusing lattice.",
"root": "ring",
"elements": {
"d1": ["Drift", {"length": 0.55}],
"q1": ["Quadrupole", {"length": 0.2, "k1": 1.2}],
"q2": ["Quadrupole", {"length": 0.4, "k1": -1.2}],
"b1": ["Dipole", {"length": 1.5, "angle": 0.392701, "e1": 0.1963505, "e2": 0.1963505}]
},
"lattices": {
"cell": ["q1", "d1", "b1", "d1", "q2", "d1", "b1", "d1", "q1"],
"ring": ["cell", "cell", "cell", "cell", "cell", "cell", "cell", "cell"]
}
}

LatticeJSON CLI

This repository also contains a Python based command-line tool which is able validate
and convert LatticeJSON files into other common lattice file formats and vice versa.
You can install and update it using pip or pipenv:
pip install -U latticejson

Validate a LatticeJSON file:
latticejson validate /path/to/lattice.json

Convert an elegant lattice file to the LatticeJSON format:
latticejson convert --to json /path/to/lattice.lte

Autoformat one or more LatticeJSON files:
latticejson autoformat /path/to/lattice.json ...

To activate Bash completion add
eval "$(_LATTICEJSON_COMPLETE=source latticejson)"

to your .bashrc. Or, create an activation script with:
_LATTICEJSON_COMPLETE=source latticejson > latticejson-complete.sh

License
GNU General Public License v3.0