Component Manual for the Neutron Ray-Tracing Package McStas, version 3.8.6

10.11  The Pol_monitor McStas Component

Polarisation sensitive monitor.

Identification

Description

A square single monitor that measures the projection of the polarisation along a given normalized m-vector (mx, my, mz). The measured quantity is: sx*mx+sy*my+mz*sz

Example: Pol_monitor(xwidth=0.1, yheight=0.1, nchan=11, mx=0, my=1, mz=0)

Input parameters

Parameters in boldface are required; the others are optional.

Name

Unit

Description

Default

xwidth

m

Width of detector

0.1

yheight

m

Height of detector

0.1

restore_neutron

1

If set, the monitor does not influence the neutron state

0

mx

1

X-component of monitor vector (can be negative)

0

my

1

Y-component of monitor vector (can be negative)

0

mz

1

Z-component of monitor vector (can be negative)

0

nowritefile

1

If set, monitor will skip writing to disk

0

Links