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

# The `SE_example` Instrument

Mockup of transmission Spin-Echo, written for PNCMI 2010 school in Delft.

## Identification

- Site: Templates
- Author: Erik Knudsen, Peter Willendrup
- Origin: Risoe
- Date: June 2010
- Version: 0.2

## Description

    This instrument shows the use of essential McStas polarisation components, including Pol_mirror, Pol_simpleBfield and MeanPolLambda_monitor.

    Pol_mirror is used to polarize and analyze the incoming and scattered beams.
    Pol_simpleBfield is used to define guidefields and flippers.
    MeanPolLambda_montior is used to monitor beam polarisation.

    Example: mcrun SE_example.instr dBz=-0.0001,0.0001 -N41 -n1e5

## Input parameters

Parameters in boldface are required; the others are optional.

Name | Unit | Description | Default
--- | --- | --- | ---
POL_ANGLE | deg | Reflection angle of polarizer/analyzer | 2
SAMPLE | 1 | Flag to include (0) or exclude incoherent scatterer | 0
Bguide | T | Field magnitude in guide fields | 0.1
Bflip | T | Magnitude of flipper fields, | 3e-4
dBz | T | Magnitude field perturbation in first guide field | 0
Lam | Angstrom | Mean wavelength of neutrons emitted from source | 8
dLam | Angstrom | Wavelength spread of neutrons emitted from source | 0.8

## Links

- Source code for `SE_example.instr`.
- Requires mcstas 1.12b (or beta). PolLambda_monitor has been modified to work (nL->nlam)

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