CONTACT & STAFF
Facility E-mail: quati@lnls.br
Coordination: Amelie C. Rochet
Tel.: +55 19 3517 5180
E-mail: amelie.rochet@lnls.br
Click here for more information on this Facility team.
The QUATI (Quick X-Ray Absorption Spectroscopy for Time and space resolved experiments) beamline is dedicated to high-quality X-ray absorption spectroscopy experiments (XAS) with temporal and spatial resolutions.
XANES (X-Ray Absorption Near Edge Structure) and EXAFS (Extended X-Ray Absorption Fine Structure) spectra will be available between 4.5 to 35 keV (covering K edges from Titanium to Xenon and the other elements with L edges).
The high brilliance from the fourth-generation synchrotron ring SIRIUS combined with the beamline design, will allow for time-resolved measurements down to sub-second time resolution to be performed.
The beam size will be variable from 15 x 10 μm2 to 5 x 0,6 mm2. Heterogeneous and sensitive materials will largely benefit from the size flexibility.
Besides, with the high flux achieved in this beamline, it will be possible to study the structure of materials at high temperatures under gas flow or pressure under in situ / operando conditions, benefiting areas such as catalysis, materials science, nanotechnology, environmental and life sciences…
Several sample environments, such as oven (with powdered or pelletised samples), electrochemical cell, cryostat and multiple ex situ sample holders will be available. The beamline can also house sample holders brought by users.
Furthermore, the Quati beamline intends to combine X-ray techniques with other techniques to get complementary information in a single experiment. At the early stage of the beamline, mass spectrometry and Raman spectroscopy will be available. Other techniques will be implemented such as hyperspectral imaging, X-ray diffraction, X-ray emission spectroscopy and Infrared spectrometry.
Facility E-mail: quati@lnls.br
Coordination: Amelie C. Rochet
Tel.: +55 19 3517 5180
E-mail: amelie.rochet@lnls.br
Click here for more information on this Facility team.
Due date: September 15, 2026
Dear users, for our second call for proposals, three experimental modalities are available:
Each proposal must be submitted under only one of these modalities.
At the current beamline stage, experiments can be performed under the following conditions:
At the time of proposal execution, the following gases are expected to be available under flow at atmospheric pressure:
Please note that we are currently in the final installation phase of the gas handling and exhaust systems. During this period, gases are temporarily restricted to non-toxic and non-flammable gases. We expect these restrictions to be lifted by the first semester of 2027.
Some additional limitations may apply during this early operational phase, but they will be progressively removed as commissioning advances and routine operation stabilises.
Researchers intending to submit a proposal are required to contact the beamline staff in advance to discuss feasibility and experimental details.
For more information, please reach out to us at: quati@lnls.br
Figure 1 presents the optical design of the Quati beamline. The primary source of Quati is a 3.2 T superbend, a permanent dipole that generates hard X-rays with a critical energy of 19.15 keV. The main optical elements of the QUATI project are a collimating mirror (M1), a double crystal monochromator (DCM), and a focusing mirror (M2).
| Element | Type | Position [m] | Description |
|---|---|---|---|
| Source | Magnetic dipole | 0 | 3.2 T |
| M1 | First mirror | 15 | Vertical collimation, 2.25 mrad. Plane mirror. Stripes: Rh, Pt, Si. |
| DCM | Double Crystal Monochromator | 24 | Monochromatization |
| M2 | Second mirror | 30 | Vertical and horizontal focalization, 2.25 mrad. Toroidal mirror. Stripes: Rh, Pt. |
| Parameter | Value | Condition |
|---|---|---|
| Energy range | 4.5 – 12 keV 8 – 35 keV |
Si (111) Si (311) |
| Energy resolution (ΔE/E) | 10−4 10−5 |
Si (111) Si (311) |
| Photon flux | 1011 photons . s-1 @100 mA 1010 photons . s-1 @100 mA |
Si (111) Si (311) |
| Beam size | 15 x 10 μm2 up to 5 x 0.6 mm2 | The smaller beam size at 45 m, and the larger one at 48 m. |