tobin

function varargout = ezcaswitchreport(varargin)
% ezcaswitchreport(sw1r, sw2r)
% 
% This function decodes the _SW1R and _SW2R filter bank status readbacks
% in the LIGO realtime control system. 
%
% Use EPICS functions to get the values, for instance:
%
%   caget L1:ASC-WFS1_PIT_SW1R L1:ASC-WFS1_PIT_SW2R
%   L1:ASC-WFS1_PIT_SW1R           61685

nicolassmith

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tobin

% Matlab code to plot a cavity resonance

F = 10; % Finesse

f = linspace(-0.5, 1.5, 201);
P = 1./(1 + (2/pi) * F^2 * sin(pi*f).^2);

plot(f, P);
xlabel('free spectral ranges');
ylabel('power buildup');