Laser Gamma Experiments Department

The Laser Gamma Experiments Department (LGED) at ELI-NP proposes an ambitious research program, encompassing fundamental Physics and applied science. The department prepares for experiments the E7 and E4 experimental areas.
The E4 area already hosted the first ELI-NP laser-wakefield acceleration experiment, reaching electron energies upwards of 200 MeV. The upcoming E4 commissioning experiment focuses on the detection of light axion-like dark matter by means of a four-wave mixing optical setup.
The E7 area aims to combine plasma and nuclear physics, recreating conditions usually found in astrophysical phenomena with the help of more beam types (such as laser and gamma beams) to be used in the same experiment.

The experimental setups proposed follow a gradual approach from the point of view of complexity, from the "Day 1" experiments (employing in the first stage only one 1 PW laser beam) to experiments for which the prerequisites include results from the previously performed ones. The following research topics have been proposed in the LGED TDR:

PPEx – The production and photoexcitation of isomers, relevant for stellar conditions;
RR – study of Radiation Reaction to validate nonlinear/non-perturbative QED treatments;
Pair – Pair creation in QED regime;
Pol – Polarization properties of emission in strong fields;
VBir – study of the vacuum birefringence via the depolarization of linearly polarized gamma-rays;
DM – search for weakly coupling sub-eV Dark Matter;
GG – Gamma-gamma collider to verify the QED-based elastic gamma-gamma scattering;
Bio - Biophysics and biomedical applications

We have a series of research and development activities synergetic with our main research topics, for the accomplishment of the prerequisites for successful experiments (e.g., stability and repeatability, signal to noise ratio, detections) and further improvements (such as the gradual improvement of the vacuum level, beneficial for the high-sensitivity experiments):

Development of a detection system, Gamma-Polari-Calorimeter (GPC), commonly applicable to energy measurements for electrons, positrons and gamma-rays above the 0.1 GeV energy scale;
Preparatory tests for laser plasma acceleration of electrons up to necessary energies 210 MeV, 2.5 GeV and 5 GeV for the later stage experiments, respectively;
Tests of the behaviour of optical elements under mechanical and thermal stress generated by the bake-out procedures for ultra-high vacuum;
Outgassing tests (mass spectrum measurements) for components of the optical setups to be placed in ultra-high vacuum;
New methods for metabolomics;
Development of NMR methods (pulse sequences) to preserve the lifetime of stable-isotope spin polarisation (long-lived states and coherences) for imaging and biomolecular studies (Patent application submitted in 2019).

In order to best use the existing skills and ease the development of new competencies needed in the implementation and towards the operational phase of the facility, the activity in our department takes place in five workgroups:

Theory and Numerical Simulations Group
Experiments Group
Biophysics and Biomedical Applications Group

Want to join or team? ELI-NP RA5 has open positions! Please check the Jobs section for available positions and information on how to apply.

International collaborations have been one of the main ingredients in the successful development of the ELI-NP scientific case, scientists from four continents proposing novel ideas that can be tested with the unique research capabilities of ELI-NP. At LGED, we are constantly eager to expand our collaborations, and we are currently collaborating for the implementation of the commissioning experiments with:

Hiroshima University, Japan – Prof. K. Homma, Leader of the LGED TDR;
Institute for Chemical Research, University of Kyoto, Japan – the group led by Prof. S. Sakabe, collaboration on RD5-DM experiment topics;
KEK, Energy Accelerator Research Organization, Institute of Particle and Nuclear Studies, Japan – collaboration regarding pixelated SoI detectors with the group led by Dr. Y. Arai;
Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology (QST) – collaboration with the group led by Prof. M. Kando on topics of laser acceleration of electrons;
Konan University – Prof. H. Utsunomiya, collaboration on LGED-PPEx topics.

E4 ready for experiments


E7 ready for experiments


Team size



Name Position Info
Dr. Ovidiu TEȘILEANU Head of LGED CV     Info
Dr. Paul VASOS Research Scientist I CV     Info
Dr. Ștefan ATAMAN Research Scientist II (Deputy Head) CV     Info
Dr. Liviu NEAGU Research Scientist II CV     Info
Dr. Andrei BERCEANU Research Scientist III CV     Info
Dr. Andi CUCOANEȘ Research Scientist III CV     Info
Dr. Cesim DUMLU Research Scientist III Info
Dr. Yoshihide NAKAMIYA Research Scientist III Info
Dr. Aude SADET Research Scientist III
Dr. Mihai VODĂ Research Scientist III
Dr. Adonis LUPULESCU Research Scientist
Dr. Jian Fuh ONG Research Scientist Info
Dr. Madalin ROSU Research Scientist Info
Dr. Keita SETO Research Scientist CV     Info
Cătălin CHIOCHIU Engineer
Dr. Vanessa RODRIGUES Engineer CV     Info
Dr. Andrei PATRASCU Post-doctoral Research Assistant Info
Dr. Alexei ZUBRAEV Post-doctoral Research Assistant
Karunesh Kumar MISHRA Doctoral Research Assistant
Florin TELEANU Doctoral Research Assistant
Cezara ZĂGREAN-TUZA Doctoral Research Assistant
Ioana FIDEL Physicist
Kazuo TANAKA Physicist
Alexandru TOPOR Chemist
Silvana VASILCA Chemist
Irina BURLAN Technician
Jonathan TAMLYN Technician Info
Ștefan TĂZLAUANU Technician
Oana LAZĂR Secretary

Photo Gallery

Interaction chamber where LWFA is performed

The LGED after a group meeting, in May 2018

Vacuum chamber for testing experimental setups, in the ELI-NP vacuum laboratory

Vacuum chamber for testing experimental setups, in the ELI-NP vacuum laboratory.

Thermal image of a vacuum setup during the bake-out procedure

Thermal image of a vacuum setup during the bake-out procedure

Two LGED members preparing a setup in the vacuum laboratory

Two LGED members preparing a setup in the vacuum laboratory

 The Gamma-Polari-Calorimeter prototype in its early days - during the alignment

The Gamma-Polari-Calorimeter prototype in its early days - during the alignment






Contact Us

Department Secretary