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Gamelin Alexis's avatar
Various improvements related to CavityResonator
Alexis GAMELIN authored 
Add update_feedback method to CavityResonator to force FB update when needed (when QL or tuning is changed).
The feedback reference targets (setpoints) for ProportionalIntegralLoop is now CavityResonator Vc and theta as for ProportionalLoop.
Add an init_FFconst method to ProportionalIntegralLoop which is called at initialization only (not any more after each setpoint change) and needs to be called manually if we want to change the feedfoward constant during tracking.
Some simplifications on the expressions in ProportionalIntegralLoop.
CavityMonitor now records Vc and theta.
Add option "mean" to plot_cavitydata to plot the mean phasor voltage and angle versus time for non empty bunches (now the default behaviour).
Add optinal parameter show_objective to cavitydata, if True shows the Cavity voltage and phase objective value in plots.
8aa00b8a
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Gamelin Alexis's avatar 8aa00b8a
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examples
mbtrack2
.gitignore
LICENSE
README.md
mbtrack2.yml
requirements.txt
README.md

mbtrack2

mbtrack2 is a coherent object-oriented framework written in python to work on collective effects in synchrotrons.

mbtrack2 is composed of different modules allowing to easily write scripts for single bunch or multi-bunch tracking using MPI parallelization in a transparent way. The base of the tracking model of mbtrack2 is inspired by mbtrack, a C multi-bunch tracking code initially developed at SOLEIL.

Installation

Clone the mbtrack2 repo and enter the repo:

git clone https://gitlab.synchrotron-soleil.fr/PA/collective-effects/mbtrack2.git
cd mbtrack2

Using conda

To create a new conda environment for mbtrack2 run:

conda env create -f mbtrack2.yml
conda activate mbtrack2

Or to update your current conda environment to be able to run mbtrack2:

conda env update --file mbtrack2.yml

To test your installation run:

from mbtrack2 import *

Using pip

Run:

pip install -r requirements.txt

To test your installation run:

from mbtrack2 import *

Examples

Jupyter notebooks demonstrating mbtrack2 features are available in the example folder and can be opened online using google colab:

  • mbtrack2 base features Open In Colab
  • dealing with RF cavities and longitudinal beam dynamics Open In Colab
  • collective effects Open In Colab
  • bunch by bunch feedback Open In Colab

References

A. Gamelin, W. Foosang, and R. Nagaoka, “mbtrack2, a Collective Effect Library in Python”, presented at the 12th Int. Particle Accelerator Conf. (IPAC'21), Campinas, Brazil, May 2021, paper MOPAB070.

Yamamoto, Naoto, Alexis Gamelin, and Ryutaro Nagaoka. "Investigation of Longitudinal Beam Dynamics With Harmonic Cavities by Using the Code Mbtrack." Proc. 10th International Partile Accelerator Conference (IPAC’19), Melbourne, Australia, 19-24 May 2019. 2019.

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