Remove NFolded support

This is a specialized configuration that is not currently supported.  Needed
functions were not ported from matgwinc, so this never actually worked.

gwinc/gwinc.py

@@ -42,43 +42,6 @@ def noise_calc(f, ifo):
     if 'Atmospheric' in ifo:
         noises['Atmospheric Infrasound']  = noise.newtonian.atmois(f, ifo)
 
-    # adjust noise curves for multiple bounces - for resonant delay lines
-    # Brownian noise scales as Neff (correlation-corrected spot number)
-    # Displacement noises scale as N^2
-    # Thermo-optic noise scales as N (incoherent between spots)
-    if 'NFolded' in ifo.Infrastructure:
-        logging.info('FOLDED')
-        if ifo.Infrastructure.travellingWave:
-            N = ifo.Infrastructure.NFolded
-            sep_w = ifo.Infrastructure.DelayLineSpotSeparation
-            Neff = getBrownianCorrelationFactor(N,sep_w) # not yet ported to python
-            noises['Suspension Thermal'] *= N**2
-            noises['Substrate Brownian'] *= Neff
-            noises['Coating Brownian'] *= Neff
-            noises['Substrate Thermo-Elastic'] *= N**2
-            noises['Newtonian Gravity'] *= N**2
-            noises['Seismic'] *= N**2
-            noises['Coating Thermo-Optic'] *= N
-            if 'Atmospheric Infrasound' in noises:
-                noises['Atmospheric Infrasound'] *= N**2
-        else:
-            N = ifo.Infrastructure.NFolded
-            sep_w = ifo.Infrastructure.DelayLineSpotSeparation
-            Neff = getBrownianCorrelationFactorStandingWave(N,sep_w) # not yet ported to python
-            Ndispl = (2*N-1)
-            N_TO = 4*N-3 # use naive counting, needs improvement
-            noises['Suspension Thermal'] *= Ndispl**2
-            noises['Substrate Brownian'] *= Neff
-            noises['Coating Brownian'] *= Neff
-            noises['Substrate Thermo-Elastic'] *= Ndispl**2
-            noises['Newtonian Gravity'] *= Ndispl**2
-            noises['Seismic'] *= Ndispl**2
-            noises['Coating Thermo-Optic'] *= N_TO
-            if 'Atmospheric Infrasound' in noises:
-                noises['Atmospheric Infrasound'] *= Ndispl**2
-        #noises['Mirror Thermal'] = noises['Substrate Brownian'] + noises['Coating Brownian'] + \
-        #                           noises['Substrate Thermo-Elastic'] + noises['Coating Thermo-Optic'] # total mirror thermal
-
     noises['Total'] = sum(noises[curve] for curve in noises)
     noises['Freq'] = f
 

gwinc/noise/quantum.py

@@ -24,16 +24,6 @@ def shotrad(f, ifo):
     #    from .quantum_2mode import shotrad as shotrad_2mode
     #    return shotrad_2mode(f, ifo)
 
-    # deal with multiple bounces, required for resonant delay lines
-    # Stefan Ballmer 2012
-    if 'NFolded' in ifo.Infrastructure:
-        if ifo.Infrastructure.travellingWave:
-            ifo.Materials.MirrorMass=ifo.Materials.MirrorMass/ifo.Infrastructure.NFolded**2
-        else:
-            NN=ifo.Infrastructure.NFolded
-            Ndispl=2 * NN-1
-            ifo.Materials.MirrorMass=ifo.Materials.MirrorMass/Ndispl**2
-
     #####################################################
     # Call IFO Quantum Model
     #####################################################