# The `ILL_H5_new` Instrument

*McStas: The full H5 new cold guide at the ILL, with ThALES, D16, Super-Adam, IN15
(sample only), D22WASP and CryoEDM
This is a proposed geometry for major H5 guide hall upgrade (since 2013).
The exact adopted H5 geometry may be actually different.*

## Identification

- **Site:** ILL
- **Author:** FARHI Emmanuel (farhi@ill.fr)
- **Origin:** ILL
- **Date:** May, 2011

## Description

```text
This model decribes the full new H5 cold guide at the ILL, with ThALES, WASP, D16,
Super-Adam, IN15, D22.

H511:The IN15 Spin-echo spectrometer
is simulated with an incoming polarized beam, but not with a full spin-echo
description. Sample is Vanadium
H512:The D22 Large dynamic range small-angle diffractometer
is fully simulated
H521:The D16 Small momentum transfer diffractometer D16 is realistic
H521:The SuperADAM reflectometer is used in low angle diffraction mode.
H522: The WASP Spin-echo spectrometer
is simulated with an incoming polarized beam, but not with a full spin-echo
description. Sample is Vanadium
H523:The CryoEDM with its polarized beam
H53: The ThALES Cold neutron three-axis spectrometer IN14

For each instrument, a sample can be specified (liquid/powder/amorphous),
with monitoring of the scattering in angular (diffraction) and energy modes
(for spectroscopy).
```

## Examples

- **Test: lambda=5 Detector: H5_I=1.03234e+14**

## Input parameters

Parameters in **boldface** are required; the others are optional.

| Name | Unit | Description | Default |
|------|------|-------------|---------|
| lambda | AA | central wavelength band for guide illumination | 5 |
| dlambda | AA | half width of guide wavelength band | 4.5 |
| ThALES_lambda | AA | ThALES monochromator setting wavelength. Usual 2.4 and 4.2 | 4.2 |
| WASP_lambda | AA | IN16 monochromator setting wavelength. Usual 3.3 and 6.3 | 6.3 |
| D16_lambda | AA | D16  monochromator setting wavelength. Usual 4.7 and 5.6 | 5.6 |
| SADAM_lambda | AA | SuperADAM monochromator setting wavelength. Usual 4.4 | 4.4 |
| IN15_lambda | AA | IN15 velocity selector setting wavelength | 6.5 |
| D22_lambda | AA | D22  velocity selector setting wavelength | 4.5 |
| D22_collimation | m | D22 collimation length and sample-detector distance | 2 |
| ThALES_sample | string | ThALES liquid/powder/amorphous sample | "Rb_liq_coh.sqw" |
| WASP_sample | string | WASP liquid/powder/amorphous sample | "Rb_liq_coh.sqw" |
| D16_sample | string | D16  liquid/powder/amorphous sample | "H2O_liq.qSq" |
| SADAM_sample | string | SuperADAM liquid/powder/amorphous sample | "SiO2_quartza.laz" |
| D22_sample | string | D22  liquid/powder/amorphous sample | "H2O_liq.qSq" |
| ThALES_RMV | m | ThALES monochromator vertical curvature radius, -1 for automatic setting | -1 |
| D16_RMV | m | D16 monochromator vertical curvature radius, -1 for automatic setting | -1 |
| SADAM_RMV | m | SuperADAM monochromator vertical curvature radius, -1 for automatic setting | -1 |
| ThALES_RMH | m | ThALES monochromator horizontal curvature radius, -1 for automatic setting | -1 |

## Links

- [Source code](ILL_H5_new.instr) for `ILL_H5_new.instr`.
- The NoteDPT11 at the ILL
- The DPT/SMAE 11/070 WASP design report
- The DPT/SMAE 10/271 H5 design report
- Daily notes from K. Andersen about the H5 project
- Mirotron drawing MR-0656-000 for the IN15 V-mirror geometry

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