The `SOLEIL_PUMA` Instrument

PUMA beam-line at SOLEIL

Identification

Site: SOLEIL
Author: Uxue Saez Fernandez
Origin: SOLEIL
Date: 09/2026

Description

PUMA (an acronym for “Photons Used for Ancient Materials”)
is a hard X-ray beamline optimized for the heritage
science community, though not exclusively reserved for it.
Our microbeam terminal station offers a beam size of
5 (v) x 7 (h) µm², in an energy range from 4 to 22 keV.
Available experimental techniques include X-ray
fluorescence spectroscopy (XRF), X-ray absorption
spectroscopy (XANES), X-ray diffraction (XRD), and
X-ray-excited optical luminescence spectroscopy (XEOL)

Examples

(Test cases in bold)

Test: E0=10 Detector: mon_sample_e_I=4.02276e+11

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
E0	keV	Central energy selected by the DCM. Set to 0 to derive it from DCM_theta.	10
dE	keV	Half-width of the energy band emitted by the source. Reset to 3% of E0 if dE/E0 > 0.1.	0.1
DCM_theta	deg	Bragg angle of the Si DCM. Set to 0 to derive it from E0 and (hkl).	0
HFM_angle	mrad	Total deflection angle of the fixed horizontally focusing mirror (HFM, Ir coating) at 21 m. The grazing incidence angle is HFM_angle/2.	1.3
HFM_focal	m	Image distance of the HFM, used for its bending radius. The source distance is fixed at 21 m.	40
KB_angle	mrad	Total deflection angle of each KB mirror (VFM and HFM). The grazing incidence angle is KB_angle/2.	2.9
KB_coating	str	Reflectivity file for the KB mirror coating, e.g. "Rh.txt" (Rh or B4C).	"Rh.txt"
h	1	Miller index h of the Si DCM reflection.	1
k	1	Miller index k of the Si DCM reflection.	1
l	1	Miller index l of the Si DCM reflection.	1

McXtrace - An X-ray ray-trace simulation package

The SOLEIL_PUMA Instrument

Identification

Description

Examples

Input parameters

Links

The `SOLEIL_PUMA` Instrument