Conveners
Special Topic: Beam-driven Plasma Accelerators with focus on proton-driven (AWAKE, ...)
- Patric Muggli (Max-Planck-Institut für Physik)
- Edda Gschwendtner (CERN)
Special Topic: Beam-driven Plasma Accelerators with focus on proton-driven (AWAKE, ...)
- Edda Gschwendtner (CERN)
- Patric Muggli (Max-Planck-Institut für Physik)
Special Topic: Beam-driven Plasma Accelerators with focus on proton-driven (AWAKE, ...)
- Edda Gschwendtner (CERN)
- Patric Muggli (Max-Planck-Institut für Physik)
Special Topic: Simulation tools and roadmap
- Jorge Vieira (Instituto Superior Técnico)
- Maxence Thevenet (DESY)
Special Topic: Laser Technology and LWFA Results (e-, p+, ion)
- Leonida Antonio Gizzi (CNR - INO, and INFN - Sez. di Pisa)
- Stefan Karsch (LMU München)
Special Topic: Laser Technology and LWFA Results (e-, p+, ion)
- Leonida Antonio Gizzi (CNR - INO, and INFN - Sez. di Pisa)
- Stefan Karsch (LMU München)
Special Topic: Laser Technology and LWFA Results (e-, p+, ion)
- Stefan Karsch (LMU München)
- Leonida Antonio Gizzi (CNR - INO, and INFN - Sez. di Pisa)
Special Topic: Laser Technology and LWFA Results (e-, p+, ion)
- Stefan Karsch (LMU München)
- Leonida Antonio Gizzi (CNR - INO, and INFN - Sez. di Pisa)
Special Topic: Distributed Plasma Accelerator Landscape in Europe and Technical Progress towards Applications (EuPRAXIA ESFRI and others)
- Riccardo Pompili (Istituto Nazionale di Fisica Nucleare)
- Enrica Chiadroni (Istituto Nazionale di Fisica Nucleare)
Special Topic: Distributed Plasma Accelerator Landscape in Europe and Technical Progress towards Applications (EuPRAXIA ESFRI and others)
- Riccardo Pompili (Istituto Nazionale di Fisica Nucleare)
- Enrica Chiadroni (Istituto Nazionale di Fisica Nucleare)
Special Topic: Distributed Plasma Accelerator Landscape in Europe and Technical Progress towards Applications (EuPRAXIA ESFRI and others)
- Riccardo Pompili (Istituto Nazionale di Fisica Nucleare)
- Enrica Chiadroni (Istituto Nazionale di Fisica Nucleare)
Special Topic: International Landscape: Facilities, projects, initiatives
- Pietro Musumeci
- Masaki Kando (KPSI, QST)
- Mark Hogan (SLAC National Accelerator Laboratory)
Special Topic: International Landscape: Facilities, projects, initiatives
- Mark Hogan (SLAC National Accelerator Laboratory)
- Masaki Kando (KPSI, QST)
- Pietro Musumeci
Special Topic: Structure-based accelerators (e.g. ACHIP) and advanced radiation generation schemes
- Rasmus Ischebeck (PSI)
We show experimentally that the self-modulation instability of a long 400 GeV proton bunch can be seeded by a preceding short 18 MeV electron bunch. We prove that the timing of the self-modulation is reproducible from event to event, and that it is controlled by the timing of the seed bunch.We show that the amplitude of the seed wakefields depends on the parameters of the seed electron bunch,...
We study experimentally hosing [1] of a long proton bunch in plasma in AWAKE. We induce this process with misalignment between the trajectories of a preceding short electron bunch and that of the proton bunch. We observe hosing as transverse oscillation of the proton bunch centroid position in the plane of misalignment at the period of the wakefields. Self-modulation (SM) occurs in the...
The hosing instability poses a feasibility risk for plasma-based accelerator concepts. Though potential mitigation methods have been discussed extensively in the blow-out regime, less attention has been devoted to hosing in the long-beam, linear wakefield regime [1,2], which is relevant for PWFA concepts geared towards high-energy physics applications, such as the AWAKE experiment.
We show...
The proton driven plasma Wakefield acceleration experiment AWAKE at CERN demonstrated basic electron capturing and acceleration using a rather long electron bunch spreading out over several plasma wavelengths. For the second phase of the experiment called Run 2, the aim is to inject a short electron bunch with appropriate emittance and charge to achieve full capture and emittance preservation...
Particle acceleration in a quasilinear plasma wake provides access to high acceleration gradients while avoiding self-trapping of the background electrons. However, this regime is highly nonlinear, with the focussing field acting on an externally injected witness bunch strongly dependent on the plasma response to the witness itself. Here we discuss matching of the witness bunch to the...
Proton-driven plasma wakefield acceleration of electrons was first demonstrated in 2018 by the Advanced Wakefield Experiment (AWAKE) at CERN [1]. Following this achievement, AWAKE has developed the Run 2 research program, aimed at producing high-quality electron bunches reaching tens of GeV [2].
In the baseline Run 2 program, a one-meter gap is required between two plasmas to inject electron...
Following a successful Run 1 experiment, AWAKE has developed a baseline plan for Run 2 that requires the implementation of a compact electron source for external injection of a witness bunch in the plasma wave. The feasibility of using a laser wakefield accelerator (LWFA) to produce the electron bunch is investigated. The EARLI project (Electron Accelerator driven by a Reliable Laser for...
Proton-driven PWA is particularly well-suited for producing bunches of high-energy electrons. A number of particle physics applications for these types of beams will be presented. These include beam-dump, fixed target, and collider applications covering a wide range of fundamental physics research.
Beam-driven plasma wakefield acceleration experiments require state-of-the-art facilities in order to operate. In this talk, we review challenges associated with operating these facilities, including: beam quality and stability, machine-experiment interface, controls challenges, diagnostic challenges, and communication and scheduling issues. We hope that by clarifying these issues, we can...
We study the propagation of an electron bunch travelling within a proton bunch through a plasma density ramp. Because the proton bunch density in the ramp is higher than the plasma density, the bunch generates a high density, on-axis plasma electron filament. This filament is defocusing for the electron witness bunch that can therefore be lost along the ramp. At AWAKE we have measured this...
A particle bunch propagating through plasma will induce a non-linear response when $n_b \gg n_{e0}$ [1]. A negatively charged bunch will drive a blow-out, in which all plasma electrons are expelled from the propagation axis. A positively charged bunch will attract plasma electrons, which will flow-in to the propagation axis, creating a filament [2]. This will sustain focusing fields for the...
This talk will review recent applications of machine learning techniques to plasma-based acceleration, both for simulation workflows and for real-time control of experiments. I will briefly describe the working principle of some of these techniques, and discuss how plasma-based accelerators could take advantage of them. I will also discuss some of the recent applications of machine learning to...
Beam- and laser-driven wakefield acceleration is now routinely simulated with Particle-In-Cell (PIC) codes. Due to their increasingly wide use in our community, these tools tend to be considered as highly trustworthy under any circumstances. However, some numerical errors can significantly affect the acceleration process and alter the simulated beam properties. One example is the Numerical...
This talk presents openPMD, an open and F.A.I.R. standard for particle-mesh data, and its impact in heterogeneous scientific workflows.
Particle accelerator codes need to span various time and length scales, leading to data processing pipelines consisting of multiple heterogeneous codes.
Standardization of physical data helps bridging the different models with a commonly-understood markup,...
Plasma-based alternatives to conventional accelerators are largely investigated for electrons, whereas there are extremely few studies dedicated to positrons. Indeed, positrons are difficult to create and guide in the self-generated fields of laser-plasma interaction. Landmark studies demonstrated that positron beams created by conventional accelerators can be further accelerated in plasma...
Modeling plasma-based accelerators is a computationally challenging task.
To resolve the full kinetic behavior of the beams and the plasma, particle-in-cell (PIC) codes are the method of choice. In the quasi-static approximation it is assumed that the beams evolve on a different time scale than the plasma,allowing for a separate treatment of the beams. Consequently, quasi-static PIC enables...
Laser-plasma acceleration (LPA) is a compact technique to accelerate electron bunches to highly relativistic energies, making it a promising candidate to power radiation sources for industrial or medical applications. However, further improvements in terms of repetition rate and stability are required for LPAs to compete with already existing technologies. We report on the generation of...
Relativistic plasmas generated by high-power laser pulses are promising candidates for future compact particle accelerators. In a laser wakefield accelerator for electrons, a driving laser pulse generates a high-amplitude plasma wave forming an electric field structure (the “wakefield”), which can trap and accelerate electrons to several GeV energies over few-centimeter distances only. The...
The energy required to drive a large-amplitude plasma wave can be delivered over many plasma periods, rather than in a single period, if the driving pulse is modulated. This approach opens up plasma accelerators to novel laser technologies which can provide the required energy at high pulse repetition rates, and with high wall-plug efficiency. The required modulation can be achieved in a...
Laser technology is evolving fast and high-power lasers needed for plasma acceleration are already available as commercial products, offered by several companies, and in compact setups suitable for space-limited environments in industrial or hospital settings. It is time to identify key areas where compact laser-plasma accelerators can have a scientific and/or societal impact. Here, two...
Applications of laser plasma accelerated proton beams in cancer therapy were discussed almost since the first demonstration of compact plasma accelerators. In-vitro studies to investigate the radiobiology of these intense particle bunches were performed, in particular with respect to dose rate related phenomena. With the recently reported FLASH effect, observed to reduce radiation toxicity in...
Proton bunches produced via Target Normal Sheath Acceleration have unique features (ultra-short duration, high-flux and low emittance at the source), which could enable a plethora of new applications. However, the beam maximum energy and quality are still open challenges.
Recent experimental results obtained at the Intense Laser Irradiation Laboratory (INO-CNR, Italy) demonstrated a reliable...
High peak current electron beams from laser wakefield accelerators (LWFA) are capable to drive a particle driven wakefield (PWFA) in a subsequent stage. The intrinsic short duration of these driver beams opens the possibility for PWFA studies in a higher density regime of the order of $10^{18} \cdot \mathrm{cm}^{-3}$. Since optical probing provides a reasonable contrast at this density range,...
One of the most important features of laser-plasma based accelerators is their compactness while still providing very high accelerating fields up to hundreds of GV/m. The main challenge lies in characterizing and controlling the plasma itself, which determines its proper synchronization with the particle beam to be accelerated, an issue that strongly influences the quality of the accelerated...
External injection of high quality, low energy electron bunches into a laser driven plasma wakefield has been proposed as a method to improve the quality and stability of the accelerated electrons. Simulations have shown the preservation of emittance and energy spread of injected bunches but there has been only one experiment to date demonstrating successful injection and acceleration. We...
The talk will summarize the current status of high peak power ytterbium- and thulium based fiber lasers (i.e. at 1µm and 2µm wavelength) based on coherent combination. In addition the nonlinear pulse compression to few-cycle pulses at mJ pulse energy level and high repetition rate (100kHz) as well as paths for temporal contrast enhancement will be presented. The discussion of the scaling...
Applications such as high harmonic generation, laser plasma X-ray sources, inverse Compton scattering, electron acceleration and laser-driven neutron sources demand for always higher pulse energies and peak intensities at higher repetition rates
With significant progress in high-power laser technology during the past decade, new concepts of laser driver sources are rapidly emerging for...
According to recent theories, ion acceleration is predicted to achieve high efficiency with the use of single-cycle laser pulses. Few-cycle, high-repetition-rate laser systems with modest energy (10s of mJ) have been developed recently with remarkable stability. With the use of adaptive optics, such laser pulses can be focused down to relativistic intensities, providing a platform for...
Amplitude is involved in the increase of the average power of high energy system since 10 years. In the frame of ELI ALPS, we have already reached the level of 100W of average power on a 500TW at 10Hz (20fs) and we should be above 300W in the next 2 years. This results are possible thanks to the development of a new range of pump laser based on Nd:YAG liquid cooled disk laser head.
Today...
Laser plasma accelerators have been the subject of intensive research over the past decades since the availability of ultra high intensity lasers based on chirped pulse amplification technique. Record electron energy close to 10 GeV have been demonstrated and implementation of several controls on LPA systems combined with the use of the latest machine learning techniques have allowed very...
Increasing the luminosity of laser-driven electron accelerators to the level required for future FEL or TeV-class collider applications ideally requires a 100-1000 fold stepping up in the average power of driver lasers, translating into ultrashort/ultraintense systems close to or exceeding the kHz repetition rate and the 1-10kW average power. Scaling current technology based on Nd-pumped TiSa...
In this talk we present on the role of optical parametric chirped pulse amplification (OPCPA) in high energy laser systems at ELI-Beamlines. OPCPA is an integral part of 3 of the 4 lasers at the ELI-Beamlines laser facility and will be used as the chief amplification technology in the L2-DUHA laser which is currently under development and intended to serve as a driver for laser wakefield...
Laser-plasma accelerators (LPA) will be at the core of next-generation accelerators. Advancing LPA core technolgies, including the development of high average power drive lasers, is an integral part of DESY's accelerator R&D.
We will update on the recent developments of KALDERA, DESY's flagship LPA drive laser currently under development. KALDERA will deliver 100TW LPA drive laser pulses at...
EuPRAXIA (European Plasma Research Accelerator with eXcellence In Applications) is an ESFRI project for a compact European infrastructure with 5 GeV electron beams based on plasma accelerators. It will soon enter its Preparatory Phase, recently approved and funded by the European Union. The EuPRAXIA project is supported by a large consortium and foresees two main construction sites. One site...
The EuPRAXIA@SSPARC_LAB facility is the beam driven pillar of the EuPRAXIA project which is expected to provide by the end of 2028 the first European Research Infrastructure dedicated to demonstrating usability of plasma accelerators delivering high brightness beams up to 1-5 GeV for users.
Among the possible EuPRAXIA@SPRC_LAB applications the realization of a short wavelength Free Electron...
ELI-Beamlines, located near Prague in Czech Republic, is one the pillar of the pan-European Extreme Light Infrastructure (ELI) project. The specific nature of the ELI-Beamlines facility is its multi-discipline features, opening wide opportunities for the worldwide user community to cultivate secondary radiation and particle sources for revolutionary applications. The ELI-Beamlines development,...
The Extreme Photonics Applications Centre, a new 10Hz Petawatt laser facility under construction will be a state-of-the art centre for laser-driven plasma accelerator research and its applications. I will give a brief update about the project
The prototyping accelerator based on laser-plasma technology (PALLAS) project is aiming to build a laser-plasma injector accelerator (LPI) test facility with the aim to deliver within a few years electron beams of 150-250 MeV, < 5% energy dispersion, >30 pC, <1 mm.mrad emittance beam at 10 Hz with control and stability comparable with RF accelerator. The project approach is based on three...
The generation and acceleration of ultra-short, high quality electron beams has attracted more and more interest in accelerator science. Electron bunches with these properties and highest stability are necessary to operate and test novel diagnostics and advanced high gradient accelerating schemes.
The dedicated R&D linac ARES at DESY (Deutsches Elektronen-Synchrotron) is now fully operational...
The GV/m accelerating gradients inherent to plasma accelerators may hold the key to unlocking cost-effective accelerators, facilitating the acceleration of particle bunches to higher energies over shorter distances. However, in order to reach the luminosity and brilliance demands of high-energy physicists and photon scientists, plasma accelerators of the future must be capable of accelerating...
In recent years, great progress to achieve extreme gradients preserving high quality of beams in compact plasma-based accelerating structures have been done, both by using laser-driven (LWFA) and particle-driven (PWFA) techniques. This research activity is strictly related to the design of dedicated devices to produce and confine plasmas in order to optimize the interaction with particle...
Using Laser-wakefield accelerated (LWFA) electron beams to drive a plasma-wakefield accelerator (PWFA) has been at the center of a multi-partner collaboration during the last few years. The motivation for doing so is two-fold: Firstly, current LWFA beams achieve peak currents beyond the capabilities of most dedicated PWFA facilites (with the exception of FACET-II), therefore our approach can...
The x-rays produced by laser wakefield accelerators have a unique combination of properties: they have an ultrafast duration, smooth broadband spectrum and emanate from a micrometre sized source. They are also readily co-located and synchronised with laser driven experiments. These properties make them well suited to a range of applications including high energy density physics.
This talk...
Advanced Accelerator Facilities in the US cover a broad range of topics and applications. Prominent facilities include FACET-II at SLAC, BELLA at LBNL, AWA at Argonne, ATF at Brookhaven, and the Texas Petawatt Laser. Combined, these facilities generate enormous scientific output. We review major results from the past decade and expected outcomes in the near future. We also consider steps...
In this talk, an update on advanced plasma accelerator technology development in China will be presented. First, recent relevant research activities in the major laser labs in china (THU, PKU, SJTU, SIOM, LFRC) will be reviewed. Then two major initiatives on plasma wakefield accelerator involving two major accelerator labs in China (IHEP and Shanghai Light source) will be introduced. In the...
A new concept for a low cost high efficiency linear collider based on LN2 cooled copper accelerator structures will be described. The collider is expected to have a performance similar to ILC with higher gradients allowing for the potential of higher energy reach at a substantially lower cost per GeV. The R&D status, expected performance, and future plans will be described.
The Center for Bright Beams (CBB) is a U. S. National Science Foundation Science and Technology Center with more than 10 participating institutions and includes participating universities and affiliated U.S. national laboratories. I’ll give an introduction to the research scope of the center, which spans beam production via photocathodes, beam acceleration with superconducting radiofrequency...
The U.S. Particle Physics Community Planning Exercise, 'Snowmass 2021' was completed in July 2022 and provides input for the Particle Physics Project Prioritization Panel (P5), which will develop a ~10 year scientific vision for the future of the U.S. high energy physics program. In this contribution we provide a general overview of the Snowmass 2021 conclusions and discuss the outcomes...
Acceleration of particles in photonic nanostructures fabricated using semiconductor manufacturing techniques and driven by ultrafast solid state lasers is a new and promising approach to developing future generations of compact particle accelerators. Substantial progress has been made in this area in recent years, fueled by a growing international collaboration of universities, national...
Particle accelerators have a wide variety of applications in science, industry and medicine. Shrinking these devices to chip-based solutions would, as well as reducing costs, allow new tools such as a miniature endoscopic electron irradiation device. The individual components needed to create particle accelerators on a chip had all been established, but a beam confinement system that could...
The energy gain that has been achieved experimentally in dielectric laser accelerators has been limited to below 1 MeV to date. Limitations arise from the available laser pulse energy and from keeping the particles aligned in the microscopic accelerating channels. A significant progress in the focusing of the particles, and thus in the containment in the accelerating channel, has recently been...
Developing new methods for tailoring the phase-space distribution of electron beams is a challenging and essential task in next-generation particle accelerators, compact x-rays sources, and ultrafast electron microscopy. RF-cavities are routinely employed in accelerator science to manipulate the electrons’ phase-space. This contribution shows the use of a miniaturized RF-cavity to chop the...
