The Extreme Light Infrastructure ERIC

4th ELI User Call Set to Launch 25 March

The Extreme Light Infrastructure (ELI) is set to launch the 4th ELI User Call on 25 March with an open Call period until 29 April. This Call will continue to support a wide range of experiments, leveraging ELI’s state-of-the-art equipment at ELI ALPS and ELI Beamlines. Researchers and scientists worldwide are invited to submit their proposals which will be evaluated based on scientific excellence by an international peer-review panel.

A preliminary list of the equipment available in the upcoming call is published with this announcement. The full set of parameters and technical information are being revised, taking into account ongoing commissioning work, and will be made available on the User Portal by 25 March.

With the ELI User Programme evolving, efforts to streamline access and support the users are ongoing. As part of this, ELI has taken a significant step forward by establishing a centralised User Office. The User Office is coordinating user access across the ELI ERIC Facilities, ensuring that researchers have a single point of contact for their proposals, questions, and needs. The aim is to offer a uniform user experience and support ground-breaking research. Scientists interested in submitting a proposal are strongly encouraged to contact the ELI User Office or technical contacts in advance.

Looking Ahead: Future Calls and Events

ELI will announce bi-annual User Calls in Spring and Autumn. This pattern underscores the commitment to making the facilities available to a growing number of researchers for scientific experiments. Accordingly, the 5th Call is expected to launch at the from 25 September until 29 October 2024.

ELI User Meeting 2024 – Save-the-date

Another key date for ELI is the Joint ELI User Meeting scheduled for 26-28 June 2024 in Dolní Břežany, near Prague, to be hosted at the ELI Beamlines Facility. This event will be an opportunity for updates on recent experiments and research performed, networking, collaboration, and sharing of insights. Save-the-date, and further details will be made available shortly.

Stay up to date by visiting the ELI User Portal or sign up for the mailing list to receive regular news around the ELI User Calls and key information about ELI. For any questions get in touch with

Instrument offer/ Available equipment for CALL 4

Launch: 25th March 2024
Deadline: 29th April 2024
Experiment period:  October 2024- March 2025



(on-target parameters)

Equipment available for experimenting Short description
L1  (1 kHz, 15 fs, 2.5 TW) HHG kHz High Harmonic Generation source of 10-120 keV photons
HHG-MAC Multipurpose station for AMO science and Coherent Diffractive Imaging served by HHG source
PXS kHz plasma X-ray source of hard incoherent X-rays
PXS -TREX Endstation for time-resolved X-ray diffraction or spectroscopy experiments served by PXS
ALFA kHz laser-plasma electron accelerator and relativistic-intensity laser-matter interaction station
L3  (3.3 Hz, 27 fs, 0.4 PW) ELBA High-energy electron beamline for fundamental science and applications
ELIMAIA Laser-driven ion accelerator and ultrahigh-intensity laser-matter interaction beamline
ELIMAIA – ELIMED Station for multidisciplinary applications of laser-driven ion beams
L4n (1 shot / 2min, 0.5 kJ, 2-10ns, 530 nm, broad/narrow band) P3 Plasma Physics Platform for high energy density science and fusion research
SYLOS 2 (1kHz, 8fs, 3.75 TW) SYLOS2 Experimental platform for the SYLOS 2 laser
GPRC Gas phase reaction control pump-probe setup for femtochemistry
SYLOS COMPACT High Harmonic Generation source @ 1 kHz with XUV – IR pump-probe setup
SYLOS LONG High Harmonic Generation source @ 1 kHz with  XUV – IR pump-probe setup
SYLOS 3 (1kHz, 9 fs, 13 TW) SYLOS3 Experimental platform for the SYLOS 3 laser
LEIA Low-energy ion acceleration and neutron generation beamline driven at 1 kHz.
SYLOS ALIGNMENT  (10Hz, 12fs, 40mJ) SYLOS COMPACT High Harmonic Generation source @ 10 Hz with XUV-XUV and XUV – IR pump-probe setup
SYLOS LONG High Harmonic Generation source @ 10 Hz with XUV – IR pump-probe setup
LEIA Low-energy ion acceleration and neutron generation beamline driven at 10 Hz.
LIDT Laser-induced damage threshold test station
MIR (100kHz, 40fs, 40mJ) MIR Experimental platform for the MIR laser
MIR – HHG in Solids Generation and study of HHG in solids
HR1 (100kHz, 8fs, 1mJ) HR1 Experimental platform for the HR1 laser
TAS Transient absorption spectroscopy for liquids and films
MDOS Multi-dimensional optical spectroscopy for biological samples
HR Condensed High Harmonic Generation source @ 100 kHz with XUV – IR pump-probe setup
HR Gas High Harmonic Generation source @ 100 kHz with XUV – IR pump-probe setup
HR Gas- REMI HHG source with a reaction microscope (COLTRIMS) endstation
HR Alignment (10 kHz, 7 fs, 1 mJ) HRA Experimental platform for the HRA laser
HR Gas High Harmonic Generation source @ 10 kHz with XUV – IR pump-probe setup
THz Pump  (1:50Hz, 500fs, 500mJ; 2: 1kHz, 92 fs, 4mJ) THz High Energy High-energy THz source (~mJ) for intense THz experiments @ 50 Hz
NLTSF Pump (no external output) NLTSF Non-linear THz spectroscopy for THz pump-probe measurements with visible probe beams
Venteon/ helium VUV NanoESCA NanoESCA/photo-emission electron microscope (PEEM) with spatial, momentum and spin resolution applicable for static and pump-probe measurements
Astrella trELIPs & TCT Time-resolved Spectroscopic Ellipsometry and Transient Current Technique
Femtopower-Solstice FSRS & TA Femtosecond Raman spectroscopy and transient absorption spectroscopy
Element2 UF Ellipsometer Ultrafast ellipsometer with fs resolution
CW1550, CW632, CW533 SNOM Scanning near-field optical microscope with fs irradiation
n/a Radiobiology with IFIR Biology facilities including cell culture, histopathology, zebrafish labs with dosimetry. Irradiation endstation for multidisciplinary research
n/a Nanofabrication Electron microscopy, electron lithography and focused ion beam lithography facilities