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attenuators.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import sys
if sys.version_info.major < 3:
from PyTango import DeviceProxy as dp
else:
from tango import DeviceProxy as dp
import numpy as np
#from monitor import xbpm
from mucal import mucal
from energy import energy
import gevent
class actuator:
def __init__(self, tangoname):
self.dp = dp(tangoname)
self.display_name = str()
self.filters = dict()
self.positions = dict()
class attenuators:
def __init__(self):
self.energy = energy()
self.carousel = actuator('i11-ma-c05/ex/att.1')
self.imager1 = actuator('i11-ma-c02/dt/imag.1-mt_tz-pos')
self.xbpm1 = actuator('i11-ma-c04/dt/xbpm_diode.1-pos')
self.xbpm3 = actuator('i11-ma-c05/dt/xbpm_diode.3-pos')
self.xbpm5 = actuator('i11-ma-c06/dt/xbpm_diode.5-pos')
self.psd6 = actuator('i11-ma-c06/dt/xbpm_diode.6-pos')
self.carousel.display_name = 'filters'
self.carousel.filters = {"00 None": {'element': None, 'thickness': 0., 'position': 0.},
"01 Carbon 200um": {'element': 'C', 'thickness': 2e-2, 'position': 668.},
"02 Carbon 250um": {'element': 'C', 'thickness': 2.5e-2, 'position': 1336.},
"03 Carbon 300um": {'element': 'C', 'thickness': 3e-2, 'position': 2004.},
"04 Carbon 500um": {'element': 'C', 'thickness': 5e-2, 'position': 2672.},
"05 Carbon 1mm": {'element': 'C', 'thickness': 1e-1, 'position': 3340.},
"06 Carbon 2mm": {'element': 'C', 'thickness': 2e-1, 'position': 4008.},
"07 Carbon 3mm": {'element': 'C', 'thickness': 3e-1, 'position': 4676.},
"08 Spare 1": {'element': None, 'thickness': 0., 'position': 5344.},
"09 Spare 2": {'element': None, 'thickness': 0., 'position': 6012.},
"10 Ref Fe 5um": {'element': 'Fe', 'thickness': 5e-4, 'position': 6680.},
"11 Ref Pt 5um": {'element': 'Pt', 'thickness': 5e-4, 'position': 7348.},
"UNKNOWN": {'element': None, 'thickness': 0., 'position': None}}
self.carousel.positions = {0: "00 None",
1: "01 Carbon 200um",
2: "02 Carbon 250um",
3: "03 Carbon 300um",
4: "04 Carbon 500um",
5: "05 Carbon 1mm",
6: "06 Carbon 2mm",
7: "07 Carbon 3mm",
8: "10 Ref Fe 5um",
9: "11 Ref Pt 5um"}
self.imager1.display_name = 'imager1'
self.imager1.filters = {'isInserted': {'element': 'C', 'thickness': 500e-4},
'isExtracted': {'element': None, 'thickness': 0.}}
self.imager1.positions = {0: 'isExtracted',
1: 'isInserted'}
self.xbpm1.display_name = 'xbpm1'
self.xbpm1.filters = {'isInserted': {'element': 'Ti', 'thickness': 5e-4},
'isExtracted': {'element': None, 'thickness': 0.}}
self.xbpm1.positions = {0: 'isExtracted',
1: 'isInserted'}
self.xbpm3.display_name = 'xbpm3'
self.xbpm3.filters = {'XBPM': {'element': 'Ti', 'thickness': 5e-4},
'CVD': {'element': 'C', 'thickness': 20e-4},
'isExtracted': {'element': None, 'thickness': 0.}}
self.xbpm3.positions = {0: 'isExtracted',
1: 'CVD',
2: 'XBPM'}
self.xbpm5.display_name = 'xbpm5'
self.xbpm5.filters = {'XBPM': {'element': 'Ti', 'thickness': 5e-4},
'PSD': {'element': 'C', 'thickness': 20e-4},
'isExtracted': {'element': None, 'thickness': 0.}}
self.xbpm5.positions = {0: 'isExtracted',
1: 'PSD',
2: 'XBPM'}
self.psd6.display_name = 'psd6'
self.psd6.filters = {'isInserted': {'element': 'C', 'thickness': 20e-4},
'isExtracted': {'element': None, 'thickness': 0.}}
self.psd6.positions = {0: 'isExtracted',
1: 'isInserted'}
self.positioners = {1: self.psd6,
2: self.xbpm5,
3: self.xbpm1,
4: self.xbpm3,
5: self.imager1,
6: self.carousel}
def get_transmission_from_element_and_thickness(self, element, thickness, photon_energy=None):
# photon_energy should be given in eV
if photon_energy == None:
phot_e = self.energy.get_energy() * 1.e-3
else:
phot_e = photon_energy * 1.e-3
mu = mucal(element, phot_e)[1][5]
return np.exp(-mu*thickness)
def get_filter(self):
return self.carousel.dp.selectedattributename
def set_filter(self, filter_name, wait=True):
if sys.version_info.major < 3:
setattr(self.carousel.dp, filter_name, True)
else:
getattr(self.carousel.dp, filter_name)()
if wait:
while self.get_filter() == filter_name:
gevent.sleep(0.1)
def get_element_and_thickness(self, positioner):
element_and_thickness = positioner.filters[positioner.dp.selectedAttributeName]
element, thickness = element_and_thickness['element'], element_and_thickness['thickness']
return element, thickness
def get_transmission(self):
transmission = 1.
for p in self.positioners:
element, thickness = self.get_element_and_thickness(self.positioners[p])
if element != None and thickness != 0.:
p_t = self.get_transmission_from_element_and_thickness(element, thickness)
else:
p_t = 1.
transmission *= p_t
return transmission
def plot_levels():
import pylab
import seaborn as sns
sns.set(color_codes=True)
from matplotlib import rc
rc('font', **{'family': 'serif','serif': ['Palatino'], 'size': 20})
rc('text', usetex=True)
from itertools import product
energies = np.linspace(5000., 20000., 1000)
a = attenuators()
positioners = list(a.positioners.values())
possibilities = [list(act.positions.keys()) for act in positioners]
print('possibilities', possibilities)
configurations = product(*possibilities)
levels = []
for configuration in list(configurations):
print('configuration', configuration)
transmissions = []
elements_and_thicknesses = []
for k in range(len(configuration)):
positioner = a.positioners[k+1]
if positioner.display_name != 'filters':
continue
element_and_thickness = positioner.dp.filters[positioner.positions[configuration[k]]]
element, thickness = element_and_thickness['element'], element_and_thickness['thickness']
elements_and_thicknesses.append((element, thickness))
for energy in energies:
transmission = 1.
for element, thickness in elements_and_thicknesses:
if element != None and thickness != 0.:
transmission *= a.get_transmission_from_element_and_thickness(element, thickness, energy)
transmissions.append(transmission)
levels.append(transmissions)
levels = np.array(levels)
pylab.figure(figsize=(16, 9))
pylab.title('Filter transmission levels achievable on Proxima 2A', fontsize=24)
pylab.plot(energies.T, levels.T)
pylab.xlabel('Energy [eV]', fontsize=20)
pylab.ylabel('Transmission', fontsize=20)
pylab.savefig('filter_transmission_levels_PX2A.png')
pylab.show()
if __name__ == '__main__':
plot_levels()
pass