A5047302898- Laser-Plasma Interactions and Diagnostics
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Laser-Matter Interactions and Applications
- Laser-induced spectroscopy and plasma
- Atomic and Molecular Physics
- Laser Design and Applications
- Magnetic confinement fusion research
- Plasma Diagnostics and Applications
- Pulsed Power Technology Applications
- Topic Modeling
- Nuclear Physics and Applications
- Advanced Surface Polishing Techniques
- Particle Detector Development and Performance
- Advanced X-ray Imaging Techniques
- Particle physics theoretical and experimental studies
- Radiation Therapy and Dosimetry
- Fluid Dynamics and Turbulent Flows
- Karst Systems and Hydrogeology
- Solar and Space Plasma Dynamics
- Bacterial Identification and Susceptibility Testing
- Advanced Fiber Laser Technologies
- Superconducting Materials and Applications
- Gas Dynamics and Kinetic Theory
- Muon and positron interactions and applications
Lawrence Berkeley National Laboratory
2021-2024
University of California, Berkeley
2021
University of Naples Federico II
2016-2020
National Institute of Optics
2019-2020
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2017-2019
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
2017-2019
Vita-Salute San Raffaele University
2018
Superconducting and other Innovative Materials and Devices Institute
2017
Abstract Radiotherapy with very high energy electrons has been investigated for a couple of decades as an effective approach to improve dose distribution compared conventional photon-based radiotherapy, the recent intriguing potential dose-rate irradiation. Its practical application treatment hindered by lack hospital-scale accelerators. High-gradient laser-plasma accelerators (LPA) have proposed possible platform, but no experiments so far explored feasibility clinical use this concept. We...
Abstract Laser-plasma accelerators are capable of sustaining accelerating fields 10–100 GeV/m, 100–1000 times that conventional technology and the highest produced by any widely researched advanced accelerator concepts. also intrinsically accelerate short particle bunches, several orders magnitude shorter than technology, which leads to reductions in beamstrahlung and, hence, savings overall power consumption reach a desired luminosity. These properties make laser-plasma promising for more...
The production of high-quality electron bunches in Laser Wake Field Acceleration relies on the possibility to inject ultra-low emittance plasma wave. In this paper, we present a new bunch injection scheme which electrons extracted by ionization are trapped large-amplitude wave driven train resonant ultrashort pulses. Resonant Multi-Pulse Ionization scheme, main portion single (e.g., Ti:Sa) laser system pulse is temporally shaped as sequence sub-pulses, while minor acts an ionizing pulse....
The authors compare thin layers of nanochannels and plain foils as targets for ultraintense laser driven proton acceleration, showing a more intense flux protons with higher energy nanochannels.
Abstract As part of the Snowmass'21 community planning excercise, Advanced Accelerator Concepts (AAC) proposed future linear colliders with center-of-mass energies up to 15 TeV and luminosities 50 × 10 34 cm -2 s -1 in a compact footprint. In addition being compact, these machines must also be energy efficient. We identify two challenges that addressed design machines. First, Beam Delivery System (BDS) not add significant length accelerator complex. Second, beam parameters chosen mitigate...
Abstract In this paper we report the measurement of laser-driven proton acceleration obtained by irradiating nanotube array targets with ultrashort laser pulses at an intensity in excess 10 20 W cm −2 . The energetic spectra forward accelerated protons show a larger flux and higher cutoff energy if compared to flat foils comparable thickness. Particle-In-Cell 2D simulations reveal that packed favour better laser-plasma coupling produce efficient generation fast electrons moving through...
Laser wakefield acceleration of GeV electrons is becoming a mature technique, so that reliable accelerator delivering stable beams to users communities can now be considered. In such context, two plasma stages, one injector and booster stage, offer flexible solution for optimization. For the we consider here resonant multipulse ionization injection (ReMPI) optimized generate electron bunches with high enough quality efficiently transported second stage. order better control beam-loading...
Abstract It is widely accepted that the next lepton collider beyond a Higgs factory would require center-of-mass energy of order up to 15 TeV. Since, given reasonable space and cost restrictions, conventional accelerator technology reaches its limits near this energy, high-gradient advanced acceleration concepts are attractive. Advanced novel accelerators (ANAs) leading candidates due their ability produce gradients on 1–100 GV/m, compact facilities. However, intermediate facilities (IEF)...
We present the detection of directional muon beams produced using a PW laser at Lawrence Berkeley National Laboratory. The source is multi-GeV electron beam generated in 30 cm plasma accelerator interacting with high-Z converter target. GeV photons resulting from interaction are converted into high-flux, via pair production. By employing scintillators to capture delayed events, we were able identify muons and characterize source. Using theoretical knowledge production process combined...
The workshop focused on the application of ANAs to particle physics keeping in mind ultimate goal a collider at energy frontier (10\,TeV, e$^+$/e$^-$, e$^-$/e$^-$, or $\gamma\gamma$). development is conducted universities and national laboratories worldwide. community thematically broad diverse, particular since lasers suitable for ANA research (multi-hundred-terawatt peak power, few tens femtosecond-long pulses) acceleration electrons hundreds mega electron volts multi giga became...
Recently a new injection scheme for Laser Wake Field Acceleration, employing single 100-TW-class laser system, has been proposed. In the Resonant Multi-Pulse Ionization (ReMPI) resonant train of pulses drives large amplitude plasma wave that traps electrons extracted from by further ionization high-Z dopant (Argon in present paper). While driver have intensity below threshold dopant's ionization, properly delayed and frequency doubled (or more) pulse possesses an electric field enough to...
This work addresses the features of fast particle transport in bump-on-tail problem for varying width fluctuation spectrum, view possible applications to studies energetic fusion plasmas. Our analysis is built around idea that strongly-shaped beams do not relax through diffusion only and there exists an intermediate time scale where relaxations are convective (ballistic-like). We cast this form a self-consistent nonlinear dynamical model, which extends classic equations quasi-linear theory...
Abstract The Beam Delivery System (BDS) is a critical component of high-energy linear collider. It transports the beam from accelerator and brings it to focus at Interaction Point. BDS system includes diagnostic sections for measuring energy, emittance, polarization, as well collimators machine protection. length increases with collision energy. Higher energies also require higher luminosities, this significant constraint on design energy-frontier machines. Here, we review designs based...
Abstract In this paper we discuss design considerations and beam dynamics challenges associated with laser-driven plasma-based accelerators as applied to multi-TeV-scale linear colliders. Plasma provide ultra-high gradients ultra-short bunches, offering the potential for compact linacs reduced power requirements. We show that stable, efficient acceleration quality preservation is possible in nonlinear bubble regime of laser-plasma using shaping. Ion motion, naturally occuring dense beams...
Reliable modeling of laser-plasma accelerators, where a short and intense laser pulse propagates in an underdense plasma over long distances, is computationally challenging task. This due to the great disparity among scales involved modeling, ranging from micrometer scale wavelength to, for instance, meter interaction length multi-GeV-class accelerator. To reduce such imbalance, time-averaged ponderomotive approximation may be used, particle dynamics analytically averaged frequency, only...
Abstract Owing to their large accelerating gradients, plasma-based accelerators have attracted considerable interest as potential drivers for future, compact electron–positron colliders. Despite great progress achieved in electron acceleration, positron acceleration still remains a challenging task, with an efficient source being the prerequisite such acceleration. Here concept compact, two-stage is discussed. In first stage positrons are created by multi GeV beam produced laser-plasma...
Abstract The EuPRAXIA project aims at designing the world's first accelerator based on advanced plasma-wakefield techniques to deliver 5 GeV electron beams that simultaneously have high charge, low emittance and energy spread, which are required for applications by future user communities. Meeting this challenging objective will only be possible through dedicated effort. Many injection/acceleration schemes been explored means of thorough simulations in more than ten European research...
We analyze the interaction of a cold fast electron beam with thermalized plasma, in presence many Langmuir modes. The work aims at characterizing deviation system behavior from single-mode approximation, both respect to consistent spectral analysis most unstable mode harmonics and dense spectrum, containing linearly stable demonstrate how, on one hand, total energy fraction absorbed by is negligible all (by evaluating its amount) and, other additional modes can be excited via an avalanche...
In this paper we discuss a compact, laser-plasma-based scheme for the generation of positron beams suitable to be implemented in an all-optical setup. A laser-plasma-accelerated electron beam hits solid target producing electron-positron pairs via bremsstrahlung. The back serves as plasma mirror in-couple laser pulse into stage located right after where drives wave (or wakefield). By properly choosing delay between and positrons produced can trapped wakefield, they are focused accelerated...
Laser Wake Field accelerated electrons need to exhibit a good beam-quality comply with requirements of FEL or high brilliance Thomson Scattering sources, be post-accelerated in further LWFA stage towards TeV energy scale. Controlling electron injection, plasma density profile and laser pulse evolution are therefore crucial tasks for high-quality e-bunch production. A new bunch injection scheme, the Resonant Multi-Pulse Ionization Injection (RMPII), is based on single, ultrashort Ti:Sa...
Abstract Particle-In-Cell (PIC) simulation are fundamental to address a detailed study of Laser Wake Field Acceleration process. Given the ongoing development cm-scale plasma accelerators, reduced physical models necessary face otherwise unfeasible predictive start-to-end simulations. In this context, equation in cold fluid approximation can be powerful numerical tool because system dynamics relies on inversion Euler grid, much cheaper than usual field coupling with macroparticle motion that...
As part of the Snowmass'21 community planning excercise, Advanced Accelerator Concepts (AAC) proposed future linear colliders with center-of-mass energies up to 15 TeV and luminosities 50$\times10^{34}$ cm$^{-2}$s$^{-1}$ in a compact footprint. In addition being compact, these machines must also be energy efficient. We identify two challenges that addressed design machines. First, Beam Delivery System (BDS) not add significant length accelerator complex. Second, beam parameters chosen...
In this paper we discuss a compact, laser-plasma-based scheme for the generation of positron beams suitable to be implemented in an all-optical setup. A laser-plasma-accelerated electron beam hits solid target producing electron-positron pairs via bremsstrahlung. The back serves as plasma mirror in-couple laser pulse into stage located right after where drives wave (or wakefield). By properly choosing delay between and positrons produced can trapped wakefield, they are focused accelerated...