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scale Ks; removed fixed energy <-> K maps;

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augustin_s
2021-03-26 20:08:39 +01:00
parent 3575208d89
commit dca76822c5
1 changed files with 47 additions and 143 deletions
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190
devices/undulator.py
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@ -1,6 +1,5 @@
from time import sleep
import numpy as np
#from scipy.interpolate import Akima1DInterpolator as Akima
from epics import PV
from slic.core.adjustable import Adjustable
@ -8,119 +7,28 @@ from slic.core.adjustable import PVAdjustable
from slic.core.scanner.scanbackend import wait_for_all #, stop_all
# 14 is the CHIC
n_unds = [
8, 9, 10, 11, 12, 13,
7, 8, 9, 10, 11, 12, 13,
15, 16, 17, 18, 19, 20, 21, 22
]
und_names = [f"SATUN{n:02}-UIND030" for n in n_unds]
und_name_cal = "SATUN12-UIND030"
#energies = [
# 0.5457977557372193,
# 0.5429495415906611,
# 0.5401552739843691,
# 0.537355500731781,
# 0.534605067464375,
# 0.5318574959825555,
# 0.5291128804749312,
# 0.5264167029579244,
# 0.5237231992520139,
# 0.5210645197823921,
#]
#k_values = [
# 2.673,
# 2.681888888888889,
# 2.690777777777778,
# 2.699666666666667,
# 2.708555555555556,
# 2.7174444444444443,
# 2.7263333333333333,
# 2.735222222222222,
# 2.744111111111111,
# 2.753,
#]
#energies = [
# 0.549610621973092,
# 0.5479937271701031,
# 0.546395126105196,
# 0.544814685256097,
# 0.543218728674525,
# 0.541660979262817,
# 0.540074069530098,
# 0.538501771379368,
# 0.536939177980873,
# 0.535392458877575,
# 0.533842152732307,
# 0.5323060597843,
# 0.530767931907046,
# 0.5292440325790481,
# 0.5277161991879861,
# 0.526199323076255,
# 0.524699672767738,
#]
#k_values = [
# 2.673,
# 2.678,
# 2.683,
# 2.688,
# 2.693,
# 2.698,
# 2.703,
# 2.708,
# 2.713,
# 2.718,
# 2.723,
# 2.728,
# 2.733,
# 2.738,
# 2.743,
# 2.748,
# 2.753,
#]
#energies = [
# 1.1743862662276334,
# 1.1561455825400897,
# 1.1381577488951293,
# 1.1204686653636284,
# 1.1031371551015796,
# 1.0860714511221887,
# 1.069262314526579,
# 1.05279814063446,
# 1.0366146962391598,
# 1.0206897775380315,
#]
#k_values = [
# 1.5,
# 1.52222222,
# 1.54444444,
# 1.56666667,
# 1.58888889,
# 1.61111111,
# 1.63333333,
# 1.65555556,
# 1.67777778,
# 1.7,
#]
class Undulators(Adjustable):
def __init__(self):
super().__init__(name="Athos Undulators", units="eV")
self.adjs = {name: Undulator(name) for name in und_names}
self.convert = ConverterEK()
a = self.adjs[und_name_cal]
self.scale = ScalerEK(a)
def set_target_value(self, value, hold=False):
k = self.convert.K(value)
@ -129,12 +37,26 @@ class Undulators(Adjustable):
return
print(f"{k} <- {value}")
ks_current = [a.get_current_value(readback=False) for a in self.adjs.values()]
ks_target = self.scale.K(value, ks_current)
print("scaled: ", ks_target)
print()
# ks_target = k * np.ones_like(ks_current)
# print("all equal:", ks_target)
# print()
def change():
# replace by set_all_target_values_and_wait when print not needed anymore
#TODO: replace by set_all_target_values_and_wait when print not needed anymore
tasks = []
for name, a in self.adjs.items():
print(f"{name} <- {k}")
t = a.set_target_value(k, hold=False)
for (name, a), k_old, k_new in zip(self.adjs.items(), ks_current, ks_target):
delta = k_old - k_new
print(f"{name}: {k_old}\t->\t{k_new}\t({delta})")
if np.isnan(k_new):
print(f"{name} skipped since target K is nan")
continue
t = a.set_target_value(k_new, hold=False)
tasks.append(t)
wait_for_all(tasks)
@ -149,7 +71,7 @@ class Undulators(Adjustable):
all_ks = [a.get_current_value() for a in self.adjs.values()]
checks = np.isclose(all_ks, k, rtol=0, atol=0.001)
if not all(checks):
print("Warning: Ks are not all close:")
print(f"Warning: Ks are not all close to {k}:")
for name, k, chk in zip(self.adjs.keys(), all_ks, checks):
if not chk:
print(name, k)
@ -164,49 +86,15 @@ class Undulators(Adjustable):
class Undulator(PVAdjustable):
def __init__(self, name, accuracy=0.001):
def __init__(self, name, accuracy=0.00001):
pvname_setvalue = name + ":K_SET"
pvname_readback = name + ":K_READ"
super().__init__(pvname_setvalue, pvname_readback=pvname_readback, accuracy=accuracy, name=name)
self.energy = PVAdjustable(name + ":FELPHOTENE")
super().__init__(pvname_setvalue, pvname_readback=pvname_readback, accuracy=accuracy, active_move=True, name=name)
self.adj_energy = PVAdjustable(name + ":FELPHOTENE")
#def make_calib(x, y):
# x, y = list(zip(*sorted(zip(x, y))))
# return Akima(x, y)
#def get_map(k_min=min(k_values), k_max=max(k_values)):
# und = Undulator(und_name_cal)
# start_k_value = und.get_current_value()
# k_values = np.linspace(k_min, k_max, 10)
# energies = []
# print()
# print("mapping = {")
# for k in k_values:
# und.set_target_value(k).wait()
# energy = und.energy.get_current_value()
# print(f" {energy}: {k},")
# energies.append(energy)
# print("}")
# energies = np.array(energies)
# print()
# print("energies = [")
# for energy in energies:
# print(f" {energy},")
# print("]")
# print()
# print("k_values = [")
# for k in k_values:
# print(f" {k},")
# print("]")
# und.set_target_value(start_k_value).wait()
# return energies, k_values
@property
def energy(self):
return self.adj_energy.get_current_value() * 1000
@ -242,3 +130,19 @@ class ConverterEK:
class ScalerEK:
def __init__(self, und_reference):
self.und = und_reference
def K(self, energy_target, K_current=None):
if K_current is None:
K_current = self.und.get_current_value()
K_current = np.asarray(K_current)
energy_current = self.und.energy
energy_ratio = energy_current / energy_target
K_target_squared = energy_ratio * (K_current**2 + 2) - 2
return np.sqrt(K_target_squared)