BLonD code development meeting

Friday 26 Jul 2019, 11:00 → 12:30 Europe/Zurich

864/1-B04 (CERN)

BLonD-org/BLonD-common: first implementation

Homework for next time: think about & bring propositions for

• File structure
• Data structure
• Parent/child objects

Important: convert your tests to unittests!!

Some ipython examples available

Markus: define Gaussian, binomial etc. distributions in a base class. Parent/child class structure for distribution. Well-defined properties:

• 'fwhm' (real FWHM) vs 'sfwhm' (scaled FWHM)
• Ivan: adjust for asymmetric profiles

Alex fitting functions:

• reconstruct binomial from 2 FWHM-like fits at different heights
• fitting profiles (with curve_fit or minimize)
• let's fit the structure first

Math functions

• Find minima/maxima etc.
• Derivatives from diff, gradient, cubic spline...
• Integrals from trapz, cubic spline...
• Finding the zeros of functions
• Finding min/max locations (discrete=linear and cubic) -> also used for potential-well calculation

Interfaces

• To impedance, etc.

RF functions

• Generate RF voltage harmonics based on the main RF (no intensity effects)
• RF potential (analytic or cubic spline integration from the voltage function)
• Finding potential wells (2 functions exist Simon/Alex), and linear and cubic spline versions to be implemented

 

 

11:00 → 11:10 News & publication

Speakers: Aaron Farricker (CERN), Alexandre Lasheen (CERN), Christoffer Hjerto Grindheim (Western Norway University of Applied Sciences (NO)), Giulia Papotti (CERN), Ivan Karpov (CERN), Joel Repond (EPFL - Ecole Polytechnique Federale Lausanne (CH)), Konstantinos Iliakis (CERN), Luis Eduardo Medina Medrano (CERN), Markus Schwarz (CERN), Simon Albright (CERN), Theodoros Argyropoulos (CERN)

11:10 → 12:00 Discussion on longitudinal dynamics codes

Speakers: Alexandre Lasheen (CERN), Simon Albright (CERN)

BLonD Common

BLonD Common Docs