PyCtrl-AWA

Python library for online control and optimization of the AWA beamline.

How to run

Setting up the accelerator for Python control

• if wanting to use Frame Grabber cameras, the Frame Grabber application must be open and triggered/free run.
• if wanting to use Blackfly cameras, the following code should be executed

arv-tool-0.8
StartPhoebus.sh
StartPG.sh <valid IP address>

Running Python scripts

Currently the environment specification in environment.yml and requirements. txt are incorrect. Instead use

conda activate awa-badger-2

then open notebooks using

jupyter lab

Directory structure

• AWAControl - main python package for interacting with the AWA control system and limited analysis tools.
• control_notebooks - jupyter notebooks for implementing common procedures at AWA, ie. beamsize minimization, scans, beam alignment
• legacy - old code developed before the creation of AWAControl package
• tests - testing code

Basic usage

See below for a basic example of a quadrupole scan on DYG5 using DQ6. Results in a pandas dataframe containing measurement data (incl. extra computed quantities).

import time
import numpy as np
import pandas as pd

from AWAControl.badger.environments.awa import Environment
awa_env = Environment()
awa_env.screen_name = "DYG5"

quad_scan_values = np.linspace(-2,2,10)
measurements = []
for value in quad_scan_values:
    # set quadrupole strengths
    awa_env.set_variables({"DQ6": value})
    
    # wait a second for the power supply to settle
    time.sleep(1.0)
    
    # measure rms beamsize
    measurements.append(awa_env.get_observables(["Sx","Sy"]))
    
measurements = pd.DataFrame(measurements)