[ Identification | Description | Input parameters | Links ]

The `Transmission_polarisatorABSnT` Component

The main source code was taken from Gravity_guide (ver 1.6ill) R0=0.99, Qc=0.021, alpha=6.07, m=1.0, W=0.003, k=1, d=0.0005) w2=0.050, h2=0.050, l=2.700, waferD=0.0003, FeD=2.16e-06, Si_i=0.2, Si_a=0.215, R0=0.99, Qc=0.02174, alpha=4.25, W=0.001, mleft=1.2, mright=1.2, mtop=1.2, mbottom=1.2, R0_up=0.99, Qc_up=0.014, alpha_up=2.25, W_up=0.0025, mup=1.0, R0_down=0.99, Qc_down=0.02174, alpha_down=3.8, W_down=0.00235, mdown=2.5)

Identification

Site:
Author: Andreas Ostermann
Origin: McStas 1.8/ILL (France).
Date:

Description

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
w1	m	Width at the polarizer entry
h1	m	Height at the polarizer entry
w2	m	Width at the polarizer exit
h2	m	Height at the polarizer exit
l	m	length of polarizer
waferD	m	Thickness of Si wafer
Si_i	barns	Scattering cross section per atom (barns)
Si_a	barns	Absorption cross section per atom (barns) at 2200m/s
FeD	m	Thickness of Fe wafer
R0	1	Low-angle reflectivity of the outer guide	0.99
Qc	AA-1	Critical scattering vector of the outer guide	0.02174
alpha	AA	Slope of reflectivity of the outer guide	4.25
W	AA-1	Width of supermirror cut-off of the outer guide	0.001
R0_up	1	Low-angle reflectivity of the Fe/Si-wafer for spin up neutrons	0.99
Qc_up	AA-1	Critical scattering vector of the Fe/Si-wafer for spin up neutrons	0.0109
alpha_up	AA	Slope of reflectivity of the Fe/Si-wafer for spin up neutrons	4.25
W_up	AA-1	Width of supermirror cut-off of the Fe/Si-wafer for spin up neutrons	0.0025
R0_down	1	Low-angle reflectivity of the Fe/Si-wafer for spin down neutrons	0.99
Qc_down	AA-1	Critical scattering vector of the Fe/Si-wafer for spin down neutrons	0.02174
alpha_down	AA	Slope of reflectivity of the Fe/Si-wafer for spin down neutrons	6.25
W_down	AA-1	Width of supermirror cut-off of the Fe/Si-wafer for spin down neutrons	0.001
mleft	1	m-value of material for left. vert. mirror of the outer guide	-1
mright	1	m-value of material for right. vert. mirror of the outer guide	-1
mtop	1	m-value of material for top. horz. mirror of the outer guide	-1
mbottom	1	m-value of material for bottom. horz. mirror of the outer guide	-1
mup	1	m-value of the Fe/Si-wafer for spin up neutrons	-1
mdown	1	m-value of the Fe/Si-wafer for spin down neutrons	-1

AT (	,	,		) RELATIVE
ROTATED (	,	,		) RELATIVE

The Transmission_polarisatorABSnT Component

Identification

Description

Input parameters

Links

The `Transmission_polarisatorABSnT` Component