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McStas: Sqq_w_monitor Component

[ Identification | Description | Input parameters | Output parameters | Links ]

The Sqq_w_monitor Component

Monitor outputting a series of energy-planes in a subset of reciprocal space, spanned by scattering vectors qa(x,z) and qb(x,z) in the component x-z plane.

Identification

  • Author: Peter Willendrup
  • Origin: DTU
  • Date: June-July, 2018
  • Version:(Unknown)

Description


Cylindrical monitor on the x-z plane outputting a series of energy-planes in a subset of reciprocal 
space, spanned by scattering vectors qa(x,z) and qb(x,z).

The radius and yheight parameters are not used for propagation, but only to define the outgoing divergence 
limit considered when estimating k_f

The assumption is that the "current" neutron represents the final state, whereas the incoming state
is found by restoring the neutron state "index" components earlier.

Example: Sqq_w_monitor(filename="output",radius=1, yheight=0.05, Emin=0,Emax=5,nE=11,nqa=100,nqb=100,qamin=1,qamax=10,qbmin=1qbmax=10,index=-2)
         AT (0,0,0) RELATIVE sample

Input parameters

Parameters in boldface are required; the others are optional.
Name Unit Description Default
radius m Cylinder radius 1
yheight m Cylinder height 0.05
qax 1 x-component of 1st q-vector 1
qaz 1 z-component of 1st q-vector 0
qbx 1 x-component of 2nd q-vector 0
qbz 1 z-component of 2nd q-vector 1
qamin AA^-1 Defines interval (qamin,qamax) where monitor measures in nqa bins 0
qamax AA^-1 Defines interval (qamin,qamax) where monitor measures in nqa bins 2
qbmin AA^-1 Defines interval (qbmin,qbmax) where monitor measures in nqb bins 0
qbmax AA^-1 Defines interval (qbmin,qbmax) where monitor measures in nqb bins 2
Emin meV Defines the energy-transfer [Emin,Emax] window to monitor in nE bins 0
Emax meV Defines the energy-transfer [Emax,Emax] window to monitor in nE bins 5
nqa int Number of bins along qa direction 90
nqb int Number of bins along qb direction 90
nE int Number of energy slices 10
filename string Base filename to use, nE+1 files will be output  
index -2
nowritefile 1 If set, monitor will skip writing to disk 0

Output parameters

Name Unit Description Default
M_N  
M_p  
M_p2  
M_Ns  
M_ps  
M_p2s  

Links


[ Identification | Description | Input parameters | Output parameters | Links ]

Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Fri Jan 18 10:06:09 2019


Last Modified: Friday, 18-Jan-2019 11:06:09 CET
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