Bivoj laser system is located at Hilase center near Prague, Czechia. While built around DiPOLE technology (cryogenically cooled Yb:YAG multi-slab laser system), it has been upgraded to reach higher output energies up to 1.5 KW of average power (150 J / 10 Hz) and the problem of so called depolarization has been successfully addressed, which led to reduction of depolarization losses from ~30%...
The Centre for Advanced Laser Applications (CALA) in Munich is home to the ATLAS-3000 high power laser dedicated to research on laser-driven electron as well as ion acceleration and applications thereof.
The “Advanced Ti:Sapphire Laser” (ATLAS) is designed to deliver around 70J of pulse energy after compression in a ~27fs short pulse at a repetition rate of 1Hz. At this repetition rate, the...
Laser-plasma acceleration (LPA) aims to accelerate particles by exploiting the large electric field that can be achieved in a plasma. This field exceeds its counterparts in the rf-linacs and thus promises compact alternatives for the conventional accelerators.
The LPA process is highly non-linear and depends on a large number of laser and plasma parameters that make its optimization...
The identification of prospective scenarios for observing quantum vacuum signals in high-intensity laser experiments requires both accurate theoretical predictions and the exploration of high-dimensional parameter spaces. Numerical simulations address the first requirement, while optimization provides an efficient solution for the second one. In the present work, we put forward Bayesian...
Peking University is developing a proton radiotherapy system based on a petawatt-class laser accelerator (Compact laser plasma accelerator-II, CLAPA-II). Given the ultrashort pulse duration of laser-accelerated proton beams, the dose rate per pulse can reach up to billions of grays per second. This gives laser proton radiotherapy systems unique advantages in FLASH radiotherapy for malignant...
An essential part of the high-energy laser system PHELIX is its front-end which allows to achieve highest contrast levels of about twelve orders of magnitude with respect to the amplified spontaneous emission. Similar to other high-contrast systems, its technology heavily relies on the exploitation of nonlinear effects, specifically ultrafast optical parametric amplification (uOPA), rendering...
High-speed and high-resolution image capture is a fundamental component of the analysis of interactions between lasers and plasmas in laser plasma accelerator experiments. However, traditional methods of image transmission are subject to significant bandwidth and latency restrictions. In this paper, we propose an Ethernet-based Remote Direct Memory Access (RDMA) transmission system, which...
Constructing an Inertial Fusion Energy (IFE) power plant faces major challenges, especially in managing high-power drive lasers subject to intense thermal loads and dynamic beam distortions. These issues degrade performance and exceed the capacity of current localized control methods, underscoring the need for integrated, systemic solutions. The Adaptive Laser Architecture Development and...
The complexity of modern scientific facilities, particularly cleanrooms, requires precise control over environmental parameters such as temperature and humidity to ensure experimental accuracy. These facilities, often energy-intensive, face additional challenges due to climate change and the growing demand for energy efficiency. This drives the need for a simulation framework capable of...
One of the goals of the laser ion acceleration research at Helmholtz-Zentrum Dresden – Rossendorf, Germany, is to develop a reliable accelerator system based on a cryogenic jet target. To ensure a high reliability, these jets must have a high position stability. Therefore, the position fluctuations of such a cryogenic cylindrical hydrogen target are investigated. For this purpose, an...
In past years, novel methods for generating ultralow emittance electron beams have been developed, offering compact particle sources with exceptional beam quality ideal for future high-energy physics experiments and free-electron lasers. Recent theoretical work has proposed a laser-based technique capable of resolving emittances below the 0.1 mm mrad regime by modulating the electron phase...
Laser-plasma interactions generate x-ray radiation via numerous mechanisms. The x-ray spectral distribution is typically broadband and can span from keV to tens or hundreds of MeV energies with minor changes to the interaction conditions. Characterising this emission in detail provides greater understanding to the underlying physics and paves the way to optimising these novel sources for...
HELPMI is a 2-year project with the framework of the Helmholtz Metadata Collaboration, conducted by GSI, HI Jena and HZDR. The aim is to start the development of a F.A.I.R. data standard for experimental data of the entire laser-plasma (LPA) community. Such standard does not yet exist, but it would facilitate management and analysis of usually quite heterogeneous experimental data and logs by...
Laser-driven plasma accelerators (LPA) are compact sources of ultra-short, intense proton pulses in the multi-10-MeV energy range. These unique parameters predestine LPAs as powerful tools for ultra-high dose rate radiobiology research. To promote further sophisticated radiobiological studies at LPAs, automated setups for proton acceleration and beamline operation are required.
Key...
Plasma-based accelerators hold the potential to achieve mulit-giga-volt-per-metre accelerating gradients, offering a promising route to more compact and cost-effective accelerators for future light sources and colliders. However, plasma wakefield acceleration (PWFA) is often a nonlinear, high-dimensional process that is sensitive to jitters in multiple input parameters, making the setup,...
Most characteristics of ultra-short laser pulses can be obtained by measuring the integrated spectrum or only slices in space. However, Spatio-Temporal Couplings (STCs) may influence the laser performance. Common measurement techniques usually either rely on scanning over hundreds of shots, are only sensitive to low order effects like the Pulse-Front Tilt (PFT) or have the trade-off of...
In order to solve the problem of the large beam divergence in fast ignition schemes and increase the laser energy deposition on the target core. We systematically studied the relationship between the guiding and acceleration of target surface electrons (TSE) and laser parameters in previous works[1]. The beam quality is found to depend critically on the intensity ratio of the laser prepulse...
