McXtrace - An X-ray ray-trace simulation package

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

The SOLEIL_SWING Instrument

A simple model for the SWING beam-line at SOLEIL (small angle scattering, SAXS).

Identification

• Site: SOLEIL
• Author: E. Farhi, S. Bac
• Origin: SOLEIL
• Date: 2025

Description

The SWING beamline targets soft condensed matter, conformation of
macro-molecules in solution (BioSAXS) and material sciences. Our experimental
set up allows simultaneous small-angle X-ray scattering (SAXS) and wide-angle
X-ray scattering measurements (WAXS) in the 5-16 keV energy range. Anomalous
scattering experiments can also be performed. A very large variety of types of
samples can be studied, e.g., solutions, gels, amorphous solids, crystallized
solids, thanks to the diversity of the proposed sample environments.

This model may use any PDB file as sample, or an ideal sphere colloid for testing.

Position | Element
---------|--------------------------------------------------------------------
0        | U20 undulator
11.7     | Diaphragm providing HxV=1x0.5 mm beam
20       | Si(111) DCM, 40x40x10 mm^3 SWING_E0=5-16 keV
22.5     | Focusing KB (HFM + VFM)
31       | Linear H-CRL (f=81 cm): 31 m
32       | Sample location
32.5-39  | Detector 162.5 x 155.2 mm

Examples

(Test cases in bold)

• Test: SWING_E0=13 Detector: SWING_Eiger4M_I=128310

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
SWING_E0	keV	Nominal energy at the Wiggler.	13
SWING_dE	keV	Energy half-bandwidth at the Wiggler	0.1
SWING_dcm_theta	deg	Rotation angle of the DCM. 0=set from energy SWING_E0	0
SWING_hfm_radius	m	Horizontally focusing mirror radius.	495
SWING_vfm_radius	m	Vertically focusing mirror radius.	859
SWING_mirror_grazing_angle	deg	Tilt angle of the mirrors.	4e-3
SWING_sample	str	Sample given as a PDB file, or NULL for a 100A dilute Sphere model.	"6lyz.pdb"
SWING_sample_det	m	Sample to detector distance in m.	2
splits			10

Links

• Source code for SOLEIL_SWING.instr.
• https://www.synchrotron-soleil.fr/en/beamlines/swing

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

Generated for mcxtrace 3.10.0

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Last Modified: Friday, 23-Oct-2026 19:31:09 CEST