This repository was created to hold various calculators used in the Edwards Accelerator Lab at Ohio University in Athens, Ohio.

findenergy is a perl CGI program that allows users to select the particle and charge state, and then enter the NMR value read from the HP 53131a frequency counter.

energy_equation.png and frequench_equation.png are PNGs of the equations used to calculate the beam energy or NMR frequench given the following parameters:

• the particle mass, m
• the magnet constant, k or K
• the charge state, z or Z
• the NMR Frequency, f
• the rest mass, m0
• the particle frequency, Ec

NMR_Equations.docx is a document using Microsoft Word's equation editor to format the formulas for energy and frequency.

findenergy_test.pl is the tests for findenergy. The test program reads in the output of the fortran program from the file fort.3, extracts the frequencies, and compares the energy <=> frequency mapping with the calculation used in findenergy. Originally I had thought to do this by calling the CGI script from the tests, but there are approximately 2M energies, and I didn't think the added HTTP traffic made sense.

fort.3 is the comprehensive output of the the original fortran code, running on a set of input parameters that covers everything we've used to date.

nmrtable.f is a set of fortran code originally used on some IBM 370 and other machines that generates lookup tables that can be used to convert from NMR frequency to beam energy and vice-versa. It also has it's own README.fortran, which also documents some other programs that might get published eventually.