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Leah Hartman (University of Michigan)Poster
The interaction of electromagnetic radiation with the density gradients of a beam-driven plasma wakefield can lead to significant frequency upshifting — a process known as photon acceleration. Simulations of this phenomenon are computationally expensive due to the strict resolution requirements imposed by the CFL condition. To mitigate this, we introduce a photon kinetic model to the...
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Mitchell Sinclair (UCLA)Poster
We demonstrate that a compact, directional hard X-ray source driven by a picosecond, 100-TW-class laser interacting with an underdense gas jet reproduces the performance previously established on the Titan laser at the Jupiter Laser Facility, establishing the platform as robust and transferable across major high-energy-density-science (HEDS) facilities. Over the past decade, this platform has...
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Leily Kiani (LLNL)Poster
High-energy, repetition-rated ultrashort-pulse lasers at extended wavelengths are of interest for LWFA because ponderomotive forces scale favorably with wavelength. Midwave infrared (MWIR) and longwave infrared (LWIR) laser-based staged laser wakefield accelerator systems could enable steeper acceleration gradients, reducing footprint, complexity, and energy consumption. However, MWIR and LWIR...
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Bryan Dinh (University of Texas at Ausitn)Poster
Acoustic computed tomography (ACT) driven by x-ray radiation has gained increasing attention in recent years in the medical imaging community. In a proof-of-concept experiment, relativistic electrons (RE) produced by laser wakefield acceleration were used directly to generate acoustic signals in bovine bone, resulting in its successful structural reconstruction (see companion poster by A....
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Qianqian Su (Old Dominion University)Poster
The successful operation of future e+ e- linear colliders (LC) depends on tightly focused beams around nanometer-scale spot sizes at the interaction point to achieve high luminosity. Traditional beam delivery systems face challenges due to chromatic effects and the requirement of small emittance. To overcome these challenges, the concept of adiabatic plasma lenses has emerged as a potential...
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Dillon Merenich (Northern Illinois University)To be considered for Working Group talk
Ionization cooling is critical for a muon collider aiming to achieve high-luminosity $\mu^+\mu^-$ collisions. In the cooling channel, the reference lab-frame relativistic $\beta$ is between 0.88 and 0.93, in a regime where space charge effects cannot be ignored. The beam waist also varies substantially along the cooling channel, indicating that space charge effects may vary significantly...
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Tom Harless (Northern Illinois University)Poster
A collider capable of reaching 10 TeV parton-center-of-momentum (pCM) energy is highly desired for new particle physics experiments. A muon collider is an appealing candidate due to its fundamental particle nature and minimal radiation losses compared to other leptons like electrons and positrons. Fermilab’s Muon Campus has already delivered muon beams to the g-2 experiment and will soon...
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Dr KYUNGNAM KIM (Korea Electrotechnology Research Institute)Poster
While laser wakefield accelerators (LWFAs) are promising compact betatron radiation sources, controlling the stability of electron injection and radiation efficiency remains a critical challenge. Temporal pulse shaping through higher-order spectral phase control offers a pathway to manipulate laser-plasma interaction dynamics and optimize betatron radiation generation.
In this study, we...
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Kyle Jensen (Inversion Semiconductor)Poster
State-of-the-art extreme ultraviolet (EUV) lithography relies on laser-produced plasma (LPP) sources, which generate 13.5 nm light through thermal emission from laser-irradiated tin droplets. While LPP technology has enabled high-volume manufacturing at leading-edge nodes, it faces fundamental limitations in average power, spectral purity, and wavelength scalability. Compact accelerator-driven...
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Branko Popovic (Argonne National Lab)Poster
Electroformed copper is used in the fabrication of corrugated waveguide (CWG) structures for the 180 GHz A-STAR wakefield accelerator project at Argonne National Laboratory. Understanding the RF conductivity of electroformed copper at millimeter-wave frequencies is essential for accurate prediction of attenuation of electromagnetic waves and thermal load produced by the electron beam...
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Ryan Farrell (Northern Illinois University)Poster
This research concerns the development of compact industrial SRF e-beam accelerators at the IARC of Fermilab.
High-power electron beams (e-beams) are useful for many industrial applications, such as medical device sterilization, PFAS destruction, and pavement reinforcement. Superconducting radio frequency (SRF) e-beam accelerators are better suited for these applications than are...
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Sarah Schröder (Lawrence Berkeley National Laboratory)Poster
Compact electron sources based on laser-plasma accelerators have garnered significant interest within the microelectronics R&D community for the development of radiation-hardened designs. A tightly focused electron bunch can thereby serve as a surrogate for discrete radiation events, enabling the characterization of device malfunctions and damage thresholds in radiation-intense environments,...
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Yu Bai (University of Michigan)Poster
Coherently combined fiber lasers offer a promising route to scalable drivers for LPAs and high-intensity laser–matter interactions. Coherent pulse stacking amplification (CPSA), based on time-domain coherent combining of pulse bursts using Gires–Tournois interferometers (GTIs), provides a scalable approach for energy scaling. In this technique, a burst of temporally stretched pulses is...
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Kalyan Tirumalasetty (University of Colorado Denver)Poster
An intense electron beam can excite extreme plasmons that are non-perturbative oscillations of conduction band electrons [Sahai, Adv. Quant. Tech., 8, 2500037 (2025)]. The resulting large-amplitude oscillations can access fields as high as Petavolts per meter owing to quantum coherence when excited by a sufficiently intense particle beam propagating in a tube fabricated in condensed matter....
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Elias Hansen (UCLA)Poster
The bubble regime of drive plasma wakefields is notoriously difficult from an analytical perspective due to the inapplicability of standard fluid theory and perturbative approaches. The most widely used model was developed by Lu et al. [1] and extended for improved accuracy near the rear of the bubble by Dalichaouch et al. [2], this approach gave a 2nd order ODE for the ‘bubble radius’ with...
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Raymond Li (Lawrence Berkeley National Lab)Poster
We recently demonstrated the generation of ~10 GeV electron beams using only ~20 J of laser energy in a 30 cm long laser plasma accelerator (LPA) utilizing hydrodynamic optically field ionized (HOFI) plasma channels. However, shot-to-shot fluctuations in the output electron beam parameters were much larger than desired. For channel-guided LPAs, transverse focal position fluctuations at the...
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Eugene Park (LBNL)Poster
Laser-plasma accelerator (LPA) staging, which couples two or more LPAs sequentially, can overcome laser depletion and increase the electron beam energy. Precision electron beam focusing is critical for high charge coupling efficiency between the first and second stages. In this poster, I will present the status of recent experiments performed at the BELLA PW laser facility on compact focusing...
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Alexander Knetsch (SLAC National Accelerator Laboratory)Poster
Betatron-radiation emitted by 10 GeV electron beams can range from few keV to 100 keV depending on the PWFA parameters with typically few-fs pulse length.
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By itself this combination of parameters is complementary to capabilities of current light source facilities.
In PWFA facilities, control over the electron-beam phase space gives the opportunity to manipulate the properties of the... -
Dismas Choge (Brookhaven National Laboratory)Poster
The systematic and accurate measurement of laser-induced damage threshold (LIDT) of optical components for high-power infrared laser systems remain crucial for the design of next-generation laser-driven accelerator systems. However, despite the limited consistency of experimental data spanning the near infrared (NIR) to the long-wave infrared (LWIR), ISO-based standard tests remain the primary...
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Christopher Gardner (UC Irvine)Poster
Laser Wakefield Acceleration (LWFA) is a technique capable of producing GeV energy scale electron beams over centimeters of acceleration length by trapping and accelerating the electrons in a plasma wave driven by a high intensity laser pulse. These relativistic electron beams undergo betatron oscillations within the plasma wake, generating bright, synchrotron-like X-ray radiation with...
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Csaba Nemeth (Stanford University, SLAC)Poster
Polarization control of high-intensity coherent X-ray light is essential for many experiments, including magnetic spectroscopy and studies of chiral molecular structure. However, most free-electron laser facilities rely on planar undulators for light generation, which are generally unable to provide polarization tunability. Counterintuitively, analytical solutions of Maxwell's equations...
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José Franco Altamirano (The University of Texas at Austin)Poster
Radiation-induced Acoustic Computed Tomography is an imaging modality that combines the high penetrability of ionizing radiation with the flexibility of detection of ultrasounds. A single short pulse of electrons or x-rays locally heats an absorber inside the object of study, launching ultrasound waves in three dimensions that transducers outside the object detect. This enables image...
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Leslie ZhangPoster
Laser Wakefield accelerators (LWFAs) are compact, affordable sources of 50-250 MeV electrons, known clinically as "very-high-energy electrons" (VHEE). Such electrons are used in VHEE radiotherapy of deep tumors because of their long (~ several cm) penetration depths [1]. In a separate contribution to the AAC workshop, we show that when VHEE beams from an LWFA heat targets immersed in water,...
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Chad Pennington (UCLA)Poster
We report measurements of coherent optical transition radiation extending into the visible spectrum produced by ultrashort relativistic electron bunches at a dielectric boundary. The measured optical spectra exhibit quadratic charge scaling consistent with optical-frequency coherence arising from single-digit femtosecond longitudinal structure within the electron bunch. The measured spectral...
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Michelle Wang (Princeton University)Poster
Plasma-based optics provide high damage thresholds, making them well suited for controlling intense laser light in high-energy physics and laser fusion applications. By relying on free electrons, plasma optics can withstand intensities beyond the limits of solid optics. A laser-induced plasma grating is one such plasma optic that can diffract a laser beam with on-target intensities exceeding $...
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Buse Naz Temizel Ozdemir (Northern Illinois University)Poster
Imparting a sinusoidal modulation on the phase space is a widely used approach for generating microbunch trains in compact light-source developments. Although this method can create reasonable density modulation, only a small segment of each sinusoidal period contributes to the density peaks. More than 50% of the charges are wasted. The ultimate way to utilize the entire charge distribution...
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AFSANA MIMI RAKAPoster
Charged particles passing over a metallic grating induce undulating surface currents that emit broadband Smith-Purcell radiation (SPR) at an angle-dispersed fan of wavelengths 𝜆(𝜃), where the angle 𝜃 is measured from the particle’s propagation direction [1-2]. For a bunch of N particles of longitudinal extent 𝜎z, SPR becomes coherent, and its intensity proportional to N^2, for wavelengths 𝜆 ≳...
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Anthony Vazquez (Lawrence Berkeley National Laboratory)Poster
Staging laser-plasma accelerators (LPAs) is a promising technique for reaching higher particle energies than achievable in a single LPA for future light sources and colliders. Currently, the BELLA Center is working to couple two LPA stages together, where a GeV-electron bunch accelerated in the first LPA stage is injected in the second LPA stage for post-acceleration to several GeV-energies....
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Scott Hancock (Institute for Research in Electronics and Applied Physics, University of Maryland College Park)Poster
We present results using structured light pulses for longitudinal shaping of plasma waveguides for laser wakefield acceleration. Diffractive optics techniques are combined with traditional refractive or reflective axicons to sculpt and tune waveguides, generating features such as funnel mouths, axial nulls and inward directed shocks. Here we show how to combine and expand the tunability of...
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Anusorn Lueangaramwong (Brookhaven National Laboratory)Poster
The Accelerator Test Facility (ATF) at Brookhaven National Laboratory (BNL) combines a multi-terawatt picosecond long-wave infrared (LWIR) laser (~10 μm wavelength) with a synchronized high-brightness relativistic electron beam from a photocathode linac and near-infrared lasers for optical diagnostics. Of particular importance are high-density plasmas at or above the critical density, where...
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Vedin Dewan (Princeton University)Poster
A plasma mirror is formed when an intense laser pulse ionizes a solid target, creating an overdense plasma that reflects light specularly. In the relativistic regime($I \gtrsim 10^{18},\mathrm{W,cm^{-2}}$ at $\lambda = 800,\mathrm{nm}$), plasma mirrors generate high-order harmonics extending into the EUV and soft X-ray range. In the Coherent Synchrotron Emission (CSE) regime, relativistically...
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Dr Philippe Piot (Argonne National Laboratory)Poster
The Linac Extension Area (LEA) is a dedicated end station located downstream of the Advanced Photon Source (APS) injector at Argonne National Laboratory. LEA provides a flexible environment for accelerator research and development by leveraging the unique capabilities of the APS linear accelerator and its diverse electron-beam sources. The facility can operate with either the nominal...
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Mervin Lim Pac ChongPoster
In the recent decades, there has been an increased interest towards scaling down linear accelerators. The Dielectric Terahertz (THz) Accelerator, developed within the scope of the TWAC European project, is a technology that aims to tend toward that goal. Here, we introduce the TWAC project and report on the preliminary experimental progress. The cornerstones to the project are: (i) the...
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Mahek Logantha (UC Berkeley/Lawrence Berkeley National Lab)Poster
Multi-kHz, Multi-kW laser plasma accelerators (LPA) have the potential for high impact applications in scientific, medical, industrial and security fields. Coherently combining pulsed fiber lasers spatially, temporally, and spectrally provides a viable path to high peak and high average power. Such lasers can also upgrade beam diagnostics, shaping, and stripping in radiofrequency accelerator...
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