def test(self):
'mcni.pyre_components.NeutronsOnCone_FixedQE'
from mcni.pyre_components.NeutronsOnCone_FixedQE import NeutronsOnCone_FixedQE as factory
component = factory('source')
component.inventory.Q = Q
component.inventory.E = E
component.inventory.Ei = Ei
component.inventory.L1 = L1
component._configure()
component._init()
import mcni
neutrons = mcni.neutron_buffer(10)
component.process(neutrons)
from numpy.linalg import norm
from mcni.utils import v2e, e2v, v2k
vi = e2v(Ei)
t = L1 / vi
for n in neutrons:
vv = n.state.velocity
vQv = -vv[0], -vv[1], vi - vv[2]
vQ = norm(vQv)
Q1 = v2k(vQ)
v = norm(vv)
self.assertAlmostEqual(v2e(v), Ei - E, 4)
self.assertAlmostEqual(n.time, t, 4)
self.assertAlmostEqual(Q, Q1, 4)
continue
component._fini()
return
def test(self):
'mcni.pyre_components.NeutronsOnCone_FixedQE'
from mcni.pyre_components.NeutronsOnCone_FixedQE import NeutronsOnCone_FixedQE as factory
component = factory( 'source' )
component.inventory.Q = Q
component.inventory.E = E
component.inventory.Ei = Ei
component.inventory.L1 = L1
component._configure()
component._init()
import mcni
neutrons = mcni.neutron_buffer( 10 )
component.process( neutrons )
from numpy.linalg import norm
from mcni.utils import v2e, e2v, v2k
vi = e2v( Ei )
t = L1/vi
for n in neutrons:
vv = n.state.velocity
vQv = -vv[0], -vv[1], vi-vv[2]
vQ = norm(vQv)
Q1 = v2k(vQ)
v = norm( vv )
self.assertAlmostEqual( v2e(v), Ei-E, 4)
self.assertAlmostEqual( n.time, t, 4 )
self.assertAlmostEqual( Q, Q1, 4 )
continue
component._fini()
return
def test2(self):
"instrument: monochromatic source, sample, ??? detector"
mod2sample = 10.0 # meter
Ei = 70
from mcni.utils import e2v
vi = e2v(Ei) # m/s
Qmin = 0
Qmax = 10
nQ = 100
from SSD import Instrument as base
class Instrument(base):
class Inventory(base.Inventory):
from mcni.pyre_support import facility, componentfactory as component
detector = facility(
"detector", default=component("monitors", "NeutronPrinter", supplier="mcni")("detector")
)
pass # end of Inventory
def __init__(self, name="test"):
base.__init__(self, name)
return
def _defaults(self):
base._defaults(self)
geometer = self.inventory.geometer
geometer.inventory.source = (0, 0, 0), (0, 0, 0)
geometer.inventory.sample = (0, 0, mod2sample), (0, 0, 0)
geometer.inventory.detector = (0, 0, mod2sample), (0, 0, 0)
source = self.inventory.source
source.inventory.position = 0, 0, 0
source.inventory.velocity = 0, 0, vi
source.inventory.probability = 1
source.inventory.time = 0.0
sample = self.inventory.sample
sample.inventory.xml = sampleassembly_xml
detector = self.inventory.detector
return
pass # end of Instrument
app = Instrument()
app.run()
return
def test2(self):
'instrument: monochromatic source, sample, ??? detector'
mod2sample = 10. # meter
Ei = 70
from mcni.utils import e2v
vi = e2v( Ei ) #m/s
Qmin = 0; Qmax = 10; nQ = 100
from SSD import Instrument as base
class Instrument(base):
class Inventory(base.Inventory):
from mcni.pyre_support import facility, componentfactory as component
detector = facility(
'detector',
default = component( 'monitors', 'NeutronPrinter', supplier = 'mcni')\
('detector') )
pass # end of Inventory
def __init__(self, name = "test"):
base.__init__(self, name)
return
def _defaults(self):
base._defaults(self)
geometer = self.inventory.geometer
geometer.inventory.source = (0,0,0), (0,0,0)
geometer.inventory.sample = (0,0,mod2sample), (0,0,0)
geometer.inventory.detector = (0,0,mod2sample), (0,0,0)
source = self.inventory.source
source.inventory.position = 0,0,0
source.inventory.velocity = 0,0,vi
source.inventory.probability = 1
source.inventory.time = 0.0
sample = self.inventory.sample
sample.inventory.xml = sampleassembly_xml
detector = self.inventory.detector
return
pass # end of Instrument
app = Instrument()
app.run()
return
def onMonochromaticSource(self, source):
kwds = {
'name': source.label,
'category': 'sources',
'type': 'MonochromaticSource',
'supplier': 'mcni',
}
self.onNeutronComponent(**kwds)
from mcni.utils import e2v
v = e2v(source.energy)
self.Ei = source.energy
self.cmdline_opts['%s.velocity' % source.label] = (0, 0, v)
return
def onMonochromaticSource(self, source):
kwds = {
'name': source.label,
'category': 'sources',
'type': 'MonochromaticSource',
'supplier': 'mcni',
}
self.onNeutronComponent( **kwds )
from mcni.utils import e2v
v = e2v( source.energy )
self.Ei = source.energy
self.cmdline_opts[ '%s.velocity' % source.label ] = (0,0,v)
return
def __init__(self, name, Q, E, Ei, L1):
AbstractComponent.__init__(self, name)
Ef = Ei - E
from mcni.utils import e2k, e2v
ki = e2k( Ei )
kf = e2k( Ef )
assert Q > abs(kf-ki) and Q < ki+kf, \
'invalid: ki=%s, kf=%s, Q=%s' % (
ki, kf, Q )
cost = (ki*ki+kf*kf-Q*Q)/2/ki/kf
from math import acos, cos, sin
theta = acos( cost )
vf = e2v( Ef )
self.vz = vf * cos( theta )
self.vp = vf * sin( theta )
vi = e2v( Ei )
self.t0 = L1/vi
return
def __init__(self, name, Q, E, Ei, L1):
AbstractComponent.__init__(self, name)
Ef = Ei - E
from mcni.utils import e2k, e2v
ki = e2k(Ei)
kf = e2k(Ef)
assert Q > abs(kf-ki) and Q < ki+kf, \
'invalid: ki=%s, kf=%s, Q=%s' % (
ki, kf, Q )
cost = (ki * ki + kf * kf - Q * Q) / 2 / ki / kf
from math import acos, cos, sin
theta = acos(cost)
vf = e2v(Ef)
self.vz = vf * cos(theta)
self.vp = vf * sin(theta)
vi = e2v(Ei)
self.t0 = L1 / vi
return
# Jiao Lin
# California Institute of Technology
# (C) 2007 All Rights Reserved
#
# {LicenseText}
#
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#
eventsdat = 'events.dat'
instrumentxml = 'Pharos.xml'
Ei = 70
from mcni.utils import e2v
vi = e2v( Ei ) #m/s
from instrument.nixml import parse_file
instrument = parse_file( instrumentxml )
geometer = instrument.geometer
import mcni.units as units
meter = units.length.meter
mod2sample = geometer.distanceToSample( instrument.getModerator() ) / meter
tmin = mod2sample/vi
sample2det = instrument.getDetectorSystem().shape().in_radius
tmax = tmin + sample2det/e2v( 5 )
tofparams = tmin, tmax, (tmax-tmin)/1000
print tofparams
Idpt_filename = 'Idpt.h5'
eventsdat = 'events.dat' instrumentxml = 'Pharos.xml' Ei = 70 #incident energy Q = 5 #momentum transfer E = 30 #energy transfer from mcni.utils import e2v vi = e2v(Ei) #m/s from instrument.nixml import parse_file instrument = parse_file(instrumentxml) geometer = instrument.geometer import mcni.units as units meter = units.length.meter mod2sample = geometer.distanceToSample(instrument.getModerator()) / meter tmin = mod2sample / vi sample2det = instrument.getDetectorSystem().shape().in_radius tmax = tmin + sample2det / e2v(5) tofparams = tmin, tmax, (tmax - tmin) / 1000 Idpt_filename = 'Idpt.h5'
