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Commit 1eb84348 authored by Andreas Freise's avatar Andreas Freise
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adding all the next steps up to the ASC matrix to master2.py. 

Next steps are the computing of ASC signals for increasing maxtems
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examples/asc_test/master2.py
+ 142
− 15
View file @ 1eb84348
...@@ -2,9 +2,13 @@ ...@@ -2,9 +2,13 @@
from pykat import finesse from pykat import finesse
from pykat.commands import * from pykat.commands import *
import pylab as pl import pylab as pl
import scipy
from scipy.optimize import minimize_scalar
import numpy as np import numpy as np
import shelve import shelve
import copy import copy
import sys
def main(): def main():
...@@ -29,8 +33,8 @@ def main(): ...@@ -29,8 +33,8 @@ def main():
# %reset -f # %reset -f
# making these global during testing and debugging # making these global during testing and debugging
global kat #global kat
global out #global out
kat = finesse.kat(tempdir=".",tempname="test") kat = finesse.kat(tempdir=".",tempname="test")
kat.verbose = False kat.verbose = False
...@@ -49,9 +53,8 @@ def main(): ...@@ -49,9 +53,8 @@ def main():
kat.maxtem=3 kat.maxtem=3
Lambda=1064.0e-9 Lambda=1064.0e-9
print "--------------------------------------------------------" print "--------------------------------------------------------"
print " 5. checking wavefront tilt for ITM/ETM tilt of 0.1nrad" print " 5. checking wavefronts for ITM/ETM tilt of 0.1nrad"
# this does not work yet due to the scale command # this does not work yet due to the scale command
#kat.PDrefl_p.enabled = False #kat.PDrefl_p.enabled = False
...@@ -61,11 +64,137 @@ def main(): ...@@ -61,11 +64,137 @@ def main():
tilt(kat) tilt(kat)
print "--------------------------------------------------------" print "--------------------------------------------------------"
print " 6. wavefront tilt from center of gravity calculation" print " 6. compute beam tilt from center of gravity calculation"
gravity_tilt(kat) gravity_tilt(kat)
print "--------------------------------------------------------"
print " 7. compute optimal demodulation phase of WFS1 and WFS2"
code_WFS1 = """
pd1 WFS1_I 9M 0 nWFS1
pdtype WFS1_I y-split
pd1 WFS1_Q 9M 90 nWFS1
pdtype WFS1_Q y-split
scale 2 WFS1_I % compensate the 0.5 gain of the demodulation
scale 2 WFS1_Q % compensate the 0.5 gain of the demodulation
"""
code_WFS2 = """
pd1 WFS2_I 9M 0 nWFS2
pdtype WFS2_I y-split
pd1 WFS2_Q 9M 90 nWFS2
pdtype WFS2_Q y-split
scale 2 WFS2_I % compensate the 0.5 gain of the demodulation
scale 2 WFS2_Q % compensate the 0.5 gain of the demodulation
"""
kat.parseKatCode(code_WFS1)
kat.parseKatCode(code_WFS2)
(WFS1_phase, WFS2_phase) = asc_phases(kat)
kat.WFS1_I.phi[0]=WFS1_phase
kat.WFS1_Q.phi[0]=WFS1_phase+90.0
kat.WFS2_I.phi[0]=WFS2_phase
kat.WFS2_Q.phi[0]=WFS2_phase+90.0
result['WFS1_phase']=WFS1_phase
result['WFS2_phase']=WFS2_phase
print "--------------------------------------------------------"
print " 8. compute ASC signal matrix at WFS1 and WFS2"
signal = asc_signal(kat)
print "--------------------------------------------------------"
print " Saving results in temp. files to be read by master2.py"
tmpkatfile = "asc_base3.kat"
tmpresultfile = "myshelf2.dat"
print " kat object saved in: {0}".format(tmpkatfile)
print " current results saved in: {0}".format(tmpresultfile)
# first the current kat file
kat.saveScript(tmpkatfile)
# now the result variables:
tmpfile = shelve.open(tmpresultfile)
tmpfile['result']=result
tmpfile.close()
def asc_signal(tmpkat):
kat = copy.deepcopy(tmpkat)
code_lock = """
set err PDrefl_p re
lock z $err 900 1p
put* ETM phi $z
noplot z
"""
kat.parseKatCode(code_lock)
kat.parseKatCode('yaxis abs')
kat.noxaxis = True
kat.maxtem=1
signal=np.zeros((2, 2))
kat.ITM.ybeta=1e-10
kat.ETM.ybeta=0.0
out = kat.run(printout=0,printerr=0)
WFS1_idx=out.ylabels.index("WFS1_I")
WFS2_idx=out.ylabels.index("WFS2_I")
signal[0,0] = out.y[WFS1_idx]
signal[1,0] = out.y[WFS2_idx]
kat.ITM.ybeta=0.0
kat.ETM.ybeta=-1e-10
out = kat.run(printout=0,printerr=0)
signal[0,1] = out.y[WFS1_idx]
signal[1,1] = out.y[WFS2_idx]
signal = signal *1e10
sensors=('WFS1', 'WFS2')
mirrors=('ITM', 'ETM')
print " ASC Matrix:"
for i in range(2):
print " ", sensors[i], " ",
for j in range(2):
print "%12.10g" % signal[i,j],
print mirrors[i]
return signal
def asc_phases(tmpkat):
kat = copy.deepcopy(tmpkat)
kat.parseKatCode('yaxis abs')
kat.noxaxis = True
kat.maxtem=1
def demod_phase1(x):
kat.WFS1_I.phi[0]=x
out = kat.run(printout=0,printerr=0)
WFS1_idx=out.ylabels.index("WFS1_I")
signal = out.y[WFS1_idx]
print '\r minimising: function value %g ' % signal ,
sys.stdout.flush()
return -1*abs(signal)
def demod_phase2(x):
kat.WFS2_I.phi[0]=x
out = kat.run(printout=0,printerr=0)
WFS2_idx=out.ylabels.index("WFS2_I")
signal = out.y[WFS2_idx]
print '\r minimising: function value %g ' % signal ,
sys.stdout.flush()
return -1*abs(signal)
kat.ITM.ybeta=1e-10
kat.ETM.ybeta=0.0
res = minimize_scalar(demod_phase1, method='brent')
WFS1_phase = res.x
print ""
print " WFS1 demod phase : %.10g deg" % WFS1_phase
kat.ITM.ybeta=0.0
kat.ETM.ybeta=-1e-10
res = minimize_scalar(demod_phase2, method='brent')
WFS2_phase = res.x
print ""
print " WFS2 demod phase : %.10g deg" % WFS2_phase
return(WFS1_phase, WFS2_phase)
def gravity_tilt(tmpkat): def gravity_tilt(tmpkat):
kat = copy.deepcopy(tmpkat) kat = copy.deepcopy(tmpkat)
...@@ -74,14 +203,13 @@ def gravity_tilt(tmpkat): ...@@ -74,14 +203,13 @@ def gravity_tilt(tmpkat):
kat = copy.deepcopy(tmpkat) kat = copy.deepcopy(tmpkat)
out = kat.run(printout=0,printerr=0) out = kat.run(printout=0,printerr=0)
# compute x range in meters
y1 = out["b1"] y1 = out["b1"]
y2 = out["b1_1k"] y2 = out["b1_1k"]
# position on detector 2 (as m/w0y) # shift of beam center on detector 1 (as m/w0y)
x1 = np.sum(out.x*y1)/np.sum(y1) x1 = np.sum(out.x*y1)/np.sum(y1)
# position on detector 2 (as m/w0y) # shift of beam center on detector 2 (as m/w0y)
x2 = np.sum(out.x*y2)/np.sum(y2) x2 = np.sum(out.x*y2)/np.sum(y2)
# calibrate in meter by mutliplying with w0y # calibrate this in meter by mutliplying with w0y
# and compute the angle geometrically # and compute the angle geometrically
w0=out["w0y"][0] w0=out["w0y"][0]
detector_distance = 1000.0 detector_distance = 1000.0
...@@ -107,7 +235,6 @@ def gravity_tilt(tmpkat): ...@@ -107,7 +235,6 @@ def gravity_tilt(tmpkat):
put b1_1k y $x1 put b1_1k y $x1
yaxis abs yaxis abs
""" """
print " WFS1:" print " WFS1:"
print " ITM ybeta 0.1nm" print " ITM ybeta 0.1nm"
kat.parseKatCode(code_WFS1) kat.parseKatCode(code_WFS1)
...@@ -116,7 +243,7 @@ def gravity_tilt(tmpkat): ...@@ -116,7 +243,7 @@ def gravity_tilt(tmpkat):
kat.ITM.ybeta=1e-10 kat.ITM.ybeta=1e-10
kat.ETM.ybeta=0.0 kat.ETM.ybeta=0.0
compute_gravity_tilt(kat) compute_gravity_tilt(kat)
print " ETM ybeta 0.1nm" print " ETM ybeta -0.1nm"
kat.ITM.ybeta=0.0 kat.ITM.ybeta=0.0
kat.ETM.ybeta=-1e-10 kat.ETM.ybeta=-1e-10
compute_gravity_tilt(kat) compute_gravity_tilt(kat)
...@@ -130,7 +257,7 @@ def gravity_tilt(tmpkat): ...@@ -130,7 +257,7 @@ def gravity_tilt(tmpkat):
kat.ITM.ybeta=1e-10 kat.ITM.ybeta=1e-10
kat.ETM.ybeta=0.0 kat.ETM.ybeta=0.0
compute_gravity_tilt(kat) compute_gravity_tilt(kat)
print " ETM ybeta 0.1nm" print " ETM ybeta -0.1nm"
kat.ITM.ybeta=0.0 kat.ITM.ybeta=0.0
kat.ETM.ybeta=-1e-10 kat.ETM.ybeta=-1e-10
compute_gravity_tilt(kat) compute_gravity_tilt(kat)
...@@ -143,7 +270,7 @@ def tilt(tmpkat): ...@@ -143,7 +270,7 @@ def tilt(tmpkat):
kat = copy.deepcopy(tmpkat) kat = copy.deepcopy(tmpkat)
out = kat.run(printout=0,printerr=0) out = kat.run(printout=0,printerr=0)
# compute x range in meters # compute data x range in meters
beamsize = out["w0y"][0,0] beamsize = out["w0y"][0,0]
xrange = beamsize*(out.x.max()-out.x.min()) xrange = beamsize*(out.x.max()-out.x.min())
stepsize=xrange/(len(out.x)-1) stepsize=xrange/(len(out.x)-1)
...@@ -186,7 +313,7 @@ def tilt(tmpkat): ...@@ -186,7 +313,7 @@ def tilt(tmpkat):
kat.ETM.ybeta=0.0 kat.ETM.ybeta=0.0
(a1, a2) = compute_tilt(kat) (a1, a2) = compute_tilt(kat)
print " ETM ybeta 0.1nm" print " ETM ybeta -0.1nm"
kat.ITM.ybeta=0.0 kat.ITM.ybeta=0.0
kat.ETM.ybeta=-1e-10 kat.ETM.ybeta=-1e-10
(a3, a4) = compute_tilt(kat) (a3, a4) = compute_tilt(kat)
...@@ -200,7 +327,7 @@ def tilt(tmpkat): ...@@ -200,7 +327,7 @@ def tilt(tmpkat):
kat.ETM.ybeta=0.0 kat.ETM.ybeta=0.0
(a5, a6) = compute_tilt(kat) (a5, a6) = compute_tilt(kat)
print " ETM ybeta 0.1nm" print " ETM ybeta -0.1nm"
kat.ITM.ybeta=0.0 kat.ITM.ybeta=0.0
kat.ETM.ybeta=-1e-10 kat.ETM.ybeta=-1e-10
(a6, a7) = compute_tilt(kat) (a6, a7) = compute_tilt(kat)
......
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