Here are the final slides with all the results on the Arm Cavity Design, please review.
For RoC of 56.2 +/- 1% things are working well. Tolerance of 0.5% will be better however, 1% is still working; as long as we do not want any peaks ~50kHz away.
For length, 38+0.5% = 38.19 (with RoC 56.2) not ideal, peak is close (48.8kHz) but maybe ok? @Rana thoughts? and 38-0.5% = 37.81 (with RoC 56.2) works well.
To summarise the design:
RoC = 56.2 +/- 1%
L = 38 +/- 0.5%
def add_cavmodel(kat, T=0.001, Loss=5e-6, theta=60, L_rt = 2*12.240, R_c = 20, f1 = 11e6, gamma1 = 0, f2 = 55e6, gamma2 = 0):
T: Transmission of mirror (ITM)
Loss: Loss of mirror ETM
L_rt: Round trip length of cavity
R_c: Radius of curvature of ETM
import numpy as np
import scipy.constants as scc
import matplotlib as mpl, matplotlib.pyplot as plt
from matplotlib import cm