# The `RTP_DIF` Instrument

*McStas: A powder diffractometer at Reactor TRIGA PUSPATI (Malaysia)*

## Identification

- **Site:** TRIGA
- **Author:** E. Farhi and Megat Harun Al-Rashid
- **Origin:** ILL/RTP
- **Date:** June 2014

## Description

```text

```

## Input parameters

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

| Name | Unit | Description | Default |
|------|------|-------------|---------|
| lambda | Angs | Monochromator selected wavelength | 2.36 |
| DM | Angs | d-spacing for the monochromator reflection | 3.355 |
| Mono_tilt | deg | Tilt angle magnitude for the inner/outer mono slabs | 0 |
| powder | str | Filename of the powder sample | "Na2Ca3Al2F14.laz" |
| det_rotation | deg | Rotation of the portable detector | 45 |

## Links

- [Source code](RTP_DIF.instr) for `RTP_DIF.instr`.
- <a href="http://www.nuclearmalaysia.gov.my/Plant&Facilities/reactor.php">Nuclear Malaysia</a>
- M. Sufi et al., J. AppL Cryst. (1997). 30, 884-888 [doi:10.1107/S0021889897001738]

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