def test3(self):
'MonochromaticSource - energy spread'
# source component
from mcni.components.MonochromaticSource import MonochromaticSource
from mcni import neutron_buffer, neutron
neutron0 = neutron(v=(0, 0, 3000), r=(0.3, 0.4, 1.5))
dx = 0.1
dy = 0.8
dE = 5
s = MonochromaticSource("name", neutron0, dx=0, dy=0, dE=dE)
# neutron buffer
N = 100000
b = neutron_buffer(N)
# process
s.process(b)
#
E0 = neutron0.energy()
#
n_in_onesigma = 0
n_in_twosigma = 1
for n in b:
E = n.energy()
# print n
# print E, E0
# not always true but usually true
self.assertNotEqual(E, E0)
#
if abs(E - E0) < dE:
n_in_onesigma += 1
if abs(E - E0) < 2 * dE:
n_in_twosigma += 1
self.assertEqual(
tuple(n.state.position),
tuple(neutron0.state.position),
)
self.assertEqual(
n.time,
neutron0.time,
)
self.assertEqual(
n.probability,
neutron0.probability,
)
continue
self.assert_(abs(n_in_onesigma * 1. / N - 0.68) < 0.01)
self.assert_(abs(n_in_twosigma * 1. / N - 0.95) < 0.01)
return
def test3(self):
'MonochromaticSource - energy spread'
# source component
from mcni.components.MonochromaticSource import MonochromaticSource
from mcni import neutron_buffer, neutron
neutron0 = neutron(v=(0,0,3000), r=(0.3, 0.4, 1.5))
dx=0.1; dy=0.8; dE = 5
s = MonochromaticSource("name", neutron0, dx=0, dy=0, dE=dE)
# neutron buffer
N = 100000
b = neutron_buffer(N)
# process
s.process(b)
#
E0 = neutron0.energy()
#
n_in_onesigma = 0
n_in_twosigma = 1
for n in b:
E = n.energy()
# print n
# print E, E0
# not always true but usually true
self.assertNotEqual(E, E0)
#
if abs(E-E0) < dE:
n_in_onesigma += 1
if abs(E-E0) < 2*dE:
n_in_twosigma += 1
self.assertEqual(
tuple(n.state.position),
tuple(neutron0.state.position),
)
self.assertEqual(
n.time,
neutron0.time,
)
self.assertEqual(
n.probability,
neutron0.probability,
)
continue
self.assert_( abs(n_in_onesigma*1./N-0.68) < 0.01)
self.assert_( abs(n_in_twosigma*1./N-0.95) < 0.01)
return
def test2(self):
'MonochromaticSource - x-y spread'
# source component
from mcni.components.MonochromaticSource import MonochromaticSource
from mcni import neutron_buffer, neutron
neutron0 = neutron(v=(0, 0, 1000), r=(0.3, 0.4, 1.5))
dx = 0.1
dy = 0.8
s = MonochromaticSource("name", neutron0, dx=dx, dy=dy)
# neutron buffer
N = 10
b = neutron_buffer(N)
# process
s.process(b)
#
for n in b:
# print n
r = n.state.position
# not always true but usually true
r0 = neutron0.state.position
self.assert_(r[0] != r0[0])
self.assert_(r[1] != r0[1])
# always true
self.assert_(abs(r[0] - r0[0]) <= dx / 2)
self.assert_(abs(r[1] - r0[1]) <= dy / 2)
self.assert_(abs(r[2]) == r0[2])
self.assertEqual(
tuple(n.state.velocity),
tuple(neutron0.state.velocity),
)
self.assertEqual(
tuple(n.state.velocity),
tuple(neutron0.state.velocity),
)
self.assertEqual(
n.time,
neutron0.time,
)
self.assertEqual(
n.probability,
neutron0.probability,
)
return
def test2(self):
'MonochromaticSource - x-y spread'
# source component
from mcni.components.MonochromaticSource import MonochromaticSource
from mcni import neutron_buffer, neutron
neutron0 = neutron(v=(0,0,1000), r=(0.3, 0.4, 1.5))
dx=0.1; dy=0.8
s = MonochromaticSource("name", neutron0, dx=dx, dy=dy)
# neutron buffer
N = 10
b = neutron_buffer(N)
# process
s.process(b)
#
for n in b:
# print n
r = n.state.position
# not always true but usually true
r0 = neutron0.state.position
self.assert_(r[0]!=r0[0])
self.assert_(r[1]!=r0[1])
# always true
self.assert_(abs(r[0]-r0[0])<=dx/2)
self.assert_(abs(r[1]-r0[1])<=dy/2)
self.assert_(abs(r[2])==r0[2])
self.assertEqual(
tuple(n.state.velocity),
tuple(neutron0.state.velocity),
)
self.assertEqual(
tuple(n.state.velocity),
tuple(neutron0.state.velocity),
)
self.assertEqual(
n.time,
neutron0.time,
)
self.assertEqual(
n.probability,
neutron0.probability,
)
return
def test2(self):
'shape positioning: rotated sphere'
# source
from mcni.components.MonochromaticSource import MonochromaticSource
import mcni
neutron = mcni.neutron(r=(0,0,-1), v=(0,0,1000), prob=1)
source = MonochromaticSource('s', neutron, dx=0.10, dy=0.09, dE=0)
# sample
from mccomponents.sample import samplecomponent
scatterer = samplecomponent('sa', 'sphere-rotated-arbitrarily/sampleassembly.xml' )
# neutrons
N = 1000
neutrons = mcni.neutron_buffer(N)
neutrons = source.process(neutrons)
# find neutrons out of target
arr = neutrons.to_npyarr()
x,y,z = arr[:, :3].T
missing = x*x+y*y>0.05*0.05
# print "missed:", missing.sum()
# print neutrons
scatterer.process(neutrons)
# print neutrons
arr = neutrons.to_npyarr()
x,y,z = arr[:, :3].T
assert (z[missing] < -.9).all()
hit = arr[np.logical_not(missing), :3]
x,y,z = hit.T
assert (z > -.1).all()
assert np.isclose(np.abs(x*x+y*y+z*z), 0.05*0.05).all()
return
def test1(self):
'shape positioning: plate perp to beam'
# source
from mcni.components.MonochromaticSource import MonochromaticSource
import mcni
neutron = mcni.neutron(r=(0,0,-1), v=(0,0,1000), prob=1)
source = MonochromaticSource('s', neutron, dx=0.07, dy=0.09, dE=0)
# sample
from mccomponents.sample import samplecomponent
scatterer = samplecomponent('sa', 'plate/sampleassembly.xml' )
# neutrons
N = 1000
neutrons = mcni.neutron_buffer(N)
neutrons = source.process(neutrons)
# find neutrons out of target
arr = neutrons.to_npyarr()
x,y,z = arr[:, :3].T
missing = (x>0.03) | (x<-0.03) | (y>0.04) | (y<-0.04)
# print neutrons
scatterer.process(neutrons)
# print neutrons
arr = neutrons.to_npyarr()
x,y,z = arr[:, :3].T
assert (z[missing] < -.9).all()
hit = arr[np.logical_not(missing), :3]
x,y,z = hit.T
assert (z > -.1).all()
assert (np.isclose(np.abs(x), 0.03) | np.isclose(np.abs(y), 0.04) | np.isclose(np.abs(z), 0.005)).all()
return
def test2(self):
'shape positioning: cylinder with axis along beam'
# source
from mcni.components.MonochromaticSource import MonochromaticSource
import mcni
neutron = mcni.neutron(r=(0,0,-1), v=(0,0,1000), prob=1)
source = MonochromaticSource('s', neutron, dx=0.09, dy=0.09, dE=0)
# sample
from mccomponents.sample import samplecomponent
scatterer = samplecomponent('sa', 'cyl-along-beam/sampleassembly.xml' )
# neutrons
N = 1000
neutrons = mcni.neutron_buffer(N)
neutrons = source.process(neutrons)
# find neutrons out of target
arr = neutrons.to_npyarr()
x,y,z = arr[:, :3].T
missing = x*x+y*y > 0.04**2
# print neutrons
scatterer.process(neutrons)
# print neutrons
arr = neutrons.to_npyarr()
x,y,z = arr[:, :3].T
assert (z[missing] < -.9).all()
hit = arr[np.logical_not(missing), :3]
x,y,z = hit.T
assert (z > -.1).all()
assert (np.isclose((x*x + y*y)**.5, 0.04) | np.isclose(np.abs(z), 0.005)).all()
return
def test1(self):
'MonochromaticSource'
# source component
from mcni.components.MonochromaticSource import MonochromaticSource
from mcni import neutron_buffer, neutron
neutron0 = neutron(v=(0, 0, 1000))
s = MonochromaticSource("name", neutron0)
# neutron buffer
N = 100
b = neutron_buffer(N)
# process
s.process(b)
#
for n in b:
self.assertEqual(
tuple(n.state.position),
tuple(neutron0.state.position),
)
self.assertEqual(
tuple(n.state.velocity),
tuple(neutron0.state.velocity),
)
self.assertEqual(
n.time,
neutron0.time,
)
self.assertEqual(
n.probability,
neutron0.probability,
)
return
def test1(self):
'MonochromaticSource'
# source component
from mcni.components.MonochromaticSource import MonochromaticSource
from mcni import neutron_buffer, neutron
neutron0 = neutron(v=(0,0,1000))
s = MonochromaticSource("name", neutron0)
# neutron buffer
N = 100
b = neutron_buffer(N)
# process
s.process(b)
#
for n in b:
self.assertEqual(
tuple(n.state.position),
tuple(neutron0.state.position),
)
self.assertEqual(
tuple(n.state.velocity),
tuple(neutron0.state.velocity),
)
self.assertEqual(
n.time,
neutron0.time,
)
self.assertEqual(
n.probability,
neutron0.probability,
)
return
def test1(self):
'shape positioning: hollow cylinder'
# source
from mcni.components.MonochromaticSource import MonochromaticSource
import mcni
neutron = mcni.neutron(r=(0,0,0), v=(0,0,1000), prob=1)
source = MonochromaticSource('s', neutron, dx=0.01, dy=0.015, dE=0)
# sample
from mccomponents.sample import samplecomponent
scatterer = samplecomponent('sa', 'sphere-shell/sampleassembly.xml' )
# neutrons
N = 1000
neutrons = mcni.neutron_buffer(N)
neutrons = source.process(neutrons)
# print neutrons
scatterer.process(neutrons)
# print neutrons
arr = neutrons.to_npyarr()
x,y,z = arr[:, :3].T
assert np.allclose((x*x + y*y + z*z)**.5, 0.10)
return
def test1(self):
'kernel orientation'
# source
from mcni.components.MonochromaticSource import MonochromaticSource
import mcni, numpy as np
Ei = 100
from mcni.utils import conversion as Conv
ki = Conv.e2k(Ei)
vi = Conv.e2v(Ei)
Qdir = np.array([np.sqrt(3)/2, 0, -1./2])
Q = Qdir * 2
kf = np.array([0,0,ki]) - Q
Ef = Conv.k2e(np.linalg.norm(kf))
E = Ei-Ef
dv = Qdir * Conv.k2v(Q)
vf = np.array([0,0,vi]) - dv
# print ki, Q, kf
# print Ei, Ef, E
neutron = mcni.neutron(r=(0,0,-1), v=(0,0,vi), prob=1)
source = MonochromaticSource('s', neutron, dx=0.001, dy=0.001, dE=0)
# sample
from mccomponents.sample import samplecomponent
scatterer = samplecomponent('sa', 'cyl/sampleassembly.xml' )
# incident
N = 1000
neutrons = mcni.neutron_buffer(N)
neutrons = source.process(neutrons)
# print neutrons
# scatter
scatterer.process(neutrons)
# print neutrons
self.assertEqual(len(neutrons), N)
for neutron in neutrons:
np.allclose(neutron.state.velocity, vf)
self.assert_(neutron.probability > 0)
continue
return
