[ Identification | Description | Input parameters | Links ]

# The `WOFSANS` Instrument

Instrument developed for the HighNESS EU project, describing a Wolter Optics Focusing SANS (WOFSANS), applied for the study of moderator parameters.

## Identification

- Site: HighNESS
- Author: Stavros Samothrakis, PSI
- Origin: PSI
- Date: 2021-2023

## Description

    Instrument developed for the HighNESS EU project, describing a Wolter Optics
    Focusing SANS (WOFSANS_v2), applied for the study of moderator parameters.

    Example: WOFSANS width=0.15

## Input parameters

Parameters in boldface are required; the others are optional.

Name | Unit | Description | Default
focusing_rectangle | m | Dimensions, both width and height of the source focusing area | 0.15
width | m | Width-dimension of the source | 0.15
Emin | meV | Minimum energy of neutron beam simulated from source | 0.2
Emax | meV | Maximum energy of neutron beam simulated from source | 100000.0
l_min | AA | Minimum wavelength allowed through emulated chopper system | 7.2
pulseskip | 1 | Flag to skip one or more pulse frames in bandwidth calculation | 0
npulses | 1 | Number of pulses to simulate | 1
chopper1_flag |  |  | 0
det | m | Detector position for bandwidth calculation | 41.5
R0 | 1 | R0 low-angle reflectivity of optical coating | 0.99
m | 1 | m-value of optical coating | 3
W | AA-1 | Supermirror cut-off, optical coating | 0.003
alpha | AA | alpha parmeter of optical coating | 6.07
nshells_ph | 1 | Number of conical shells simulated in PH-Wolter optic | 28
fi_ph | m | Focal length for PH-Wolter optic | 5.5
PH_beamstop | 1 | Flag to (de)activate Beamstop post PH-Wolter optic | 1
nshells_eh | 1 | Number of conical shells simulated in EH-Wolter optic | 25
fs_eh | m | Upstream focal length for EH-Wolter optic | 8
fi_eh | m | Downstream focal length for EH-Wolter optic | 6
EH_beamstop | 1 | Flag to (de)activate Beamstop post EH-Wolter optic | 1

## Links

- Source code for `WOFSANS.instr`.
- V. Santoro et. al. Nuc. Sci. Eng. 2023 https://doi.org/10.1080/00295639.2023.2204184
- https://highnessproject.eu
- This work was supported by the HighNESS project and is funded by European Commission (H2020-951782).

[ Identification | Description | Input parameters | Links ]