edabrt: Electrostatic Deflector Aberrations

Computes first and second order aberrations of an electrostatic deflector in the horizontal x-a plane using exact analytic formulas.

Build

gcc -Wall -O2 -o edabrt edabrt.c -lm

Or using the Makefile:

make

Usage

Interactive mode -- run without arguments and follow the prompts:

./edabrt

Command-line mode -- supply all four deflector parameters:

./edabrt <r> <ang> <n1> <n2>

• r -- reference orbit radius (m)
• ang -- central angle spanning the deflector (degrees)
• n1 -- first order electrostatic field inhomogeneity coefficient
• n2 -- second order electrostatic field inhomogeneity coefficient

Reference

E. Valetov and M. Berz, Derivation of Analytic Formulas for Electrostatic Deflector Aberrations, and Comparison with the Code COSY INFINITY, MSUHEP-180212, Michigan State University (2018).

License

MIT -- see LICENSE.md.