Speakers
Uddhab Chaulagain
ELI Beamlines, one of the pillars of the European Extreme Light Infrastructure project (ELI), is a high-power laser facility. The facility hosts several state-of-the-art, high-power laser systems ranging from a few Terawatt (PW) peak power to 10 PW (Petawatt) peak power. The main objective of the facility is to provide beams of ultrashort particles and photons sources to the user community from various fields of research. In this contribution I will introduce the ELI beamlines project, summarize the current status of research and implementation of three types of X-ray sources: the HHG Beamline [1], the plasma X-ray source, the Gammatron beamline based on laser-plasma accelerator (LPA) [2], and a Betatron source dedicated to plasma physics research. X-ray pulse sources driven by high peak power kHz femtosecond lasers such as high-order harmonic sources and plasma X-ray sources have been commissioned and already entered the operation phase. The second LPA-based hard X-ray Betatron X-ray is being developed in the ELI plasma physics platform (P3) [3] located at the experimental hall E3. It aims to serve as a backlighter for advanced laser-matter interaction experiments such as high-energy-density physics, intense laser-matter interaction, and advanced plasma physics experiments combined with multiple laser beams [4]. Besides, I will present an advanced scheme for the enhancement of hard X-ray photon flux by using the density-tailored plasma to control relativistic electron orbits [5] and nonlinear resonances due to interaction with a two-color laser field [6].
References
1. O. Hort, et al. "High-flux source of coherent XUV pulses for user applications." Optics express 27.6 (2019): 8871-8883.
2. U. Chaulagain, et al. "ELI Gammatron Beamline: A Dawn of Ultrafast Hard X-ray Science." Photonics. Vol. 9. No. 11., 2022.
3. S. Weber, et al. "P3: An installation for high-energy density plasma physics and ultra-high intensity laser–matter interaction at ELI-Beamlines." Matter and Radiation at Extremes 2.4 (2017): 149-176.
4. N. Jourdain, et al. "The L4n laser beamline of the P3-installation: Towards high-repetition rate high-energy density physics at ELI-Beamlines." MRE 6.1 (2021): 015401.
5. M. Kozlova, et al. "Hard X rays from laser-wakefield accelerators in density tailored plasmas." Physical Review X 10.1 (2020): 011061.
6. M. Lamač et al., “Two-color nonlinear resonances in betatron oscillations of laser accelerated relativistic electrons”, PRR, 3(3), p.033088 (2021).
Uddhab is a scientist working in the X-ray Group, at the ELI Beamlines, one of the pillars of the European Extreme Light Infrastructure project (ELI). He was awarded PhD from Pierre and Marie Curie University (UPMC), Paris France. He has been working with high power laser systems over past 12 years. At ELI beamlines, he is leading the development of compact X-ray sources based on Laser Plasma accelerators and their applications in high-resolution imaging and spectroscopy.