A5052183441- Laser-Plasma Interactions and Diagnostics
- Laser-induced spectroscopy and plasma
- Advanced X-ray Imaging Techniques
- Particle Accelerators and Free-Electron Lasers
- Laser Design and Applications
- Laser-Matter Interactions and Applications
- Particle accelerators and beam dynamics
- High-pressure geophysics and materials
- Laser Material Processing Techniques
- Gyrotron and Vacuum Electronics Research
- Advanced Measurement and Metrology Techniques
- Antenna Design and Optimization
- Neutrino Physics Research
- Atomic and Molecular Physics
- Solid State Laser Technologies
- Nuclear Physics and Applications
- Advanced Antenna and Metasurface Technologies
- Bluetooth and Wireless Communication Technologies
- Radiation Therapy and Dosimetry
- Advanced Surface Polishing Techniques
- Astronomical Observations and Instrumentation
- Semiconductor Lasers and Optical Devices
- Bacterial Identification and Susceptibility Testing
- Ocular and Laser Science Research
- Plasma Applications and Diagnostics
University of Michigan
2020-2025
Optical Sciences (United States)
2020-2025
SLAC National Accelerator Laboratory
2024-2025
Linac Coherent Light Source
2025
Optica
2022
Michigan United
2021
Fermi National Accelerator Laboratory
2017-2018
University of Kansas
2016
Abstract Laser wakefield accelerators promise to revolutionize many areas of accelerator science. However, one the greatest challenges their widespread adoption is difficulty in control and optimization outputs due coupling between input parameters dynamic evolution accelerating structure. Here, we use machine learning techniques automate a 100 MeV-scale accelerator, which optimized its by simultaneously varying up six including spectral spatial phase laser plasma density length. Most...
Abstract The interaction of relativistically intense lasers with opaque targets represents a highly non-linear, multi-dimensional parameter space. This limits the utility sequential 1D scanning experimental parameters for optimization secondary radiation, although to-date this has been accepted methodology due to low data acquisition rates. High repetition-rate (HRR) augmented by machine learning present valuable opportunity efficient source optimization. Here, an automated, HRR-compatible...
<title>Abstract</title> Understanding dense fuel hydrodynamics is critical for predicting burning plasma behavior in laser-driven inertial confinement fusion. Traditional diagnostic sources face many limitations brightness, spatio-temporal resolution, and their ability to capture kinetic effects electromagnetic fields influencing interaction dynamics. We present a dual-probe, multi-messenger laser wakefield accelerator system, combining ultrafast X-rays relativistic electron beams at 1~Hz,...
We have designed a new filter pack array to measure angular variations in x-ray spectra during single shot. The was composed of repeating identical columns aluminum and copper filters varying thicknesses. These were located at different positions the spectrum each corresponding angle. This utilized an experiment energy evolution betatron x rays laser wakefield accelerator by curving with transverse density gradient, streaking across front charge-coupled device (CCD) camera. After subtracting...
Abstract The past decades have witnessed the development of new X-ray beam sources with brightness growing at a rate surpassing Moore’s law. Current and upcoming diffraction limited fully coherent sources, including multi-bend achromat based synchrotron high repetition free electron lasers, puts increasingly stringent requirements on stability accuracy optics systems. Parasitic motion errors sub-micro radian scale in transport conditioning can lead to significant loss coherence delivered...
We report on an experimental observation of the streaking betatron x rays in a curved laser wakefield accelerator. The was realized by launching pulse into plasma with transverse density gradient. By controlling and gradient, we steering driver, electron beam, simultaneously. Moreover, observed energy-angle correlation streaked utilized it diagnosing acceleration process single-shot mode. Our work could also find applications advanced control beam particle propagation. More importantly,...
The generation of low emittance electron beams from laser-driven wakefields is crucial for the development compact x-ray sources. Here, we show new results injection and acceleration quasimonoenergetic in amplitude experimentally using simulations. This achieved by two laser pulses decoupling wakefield trapping via ionization injection. duration, which affects beam charge energy spread, found to be tunable adjusting relative pulse delay. By changing polarization injector pulse, reducing...
The past decades have witnessed the development of new X-ray beam sources with brightness growing at a rate surpassing Moore's law. Current and upcoming diffraction limited fully coherent sources, including multi-bend achromat based synchrotron high repetition free electron lasers, puts increasingly stringent requirements on stability accuracy optics systems. Parasitic motion errors sub-micro radian scale in transport conditioning can lead to significant loss coherence delivered from source...
The success of x-ray free-electron lasers (XFELs) in recent years has greatly advanced many scientific fields. However, most these XFELs suffer from a low longitudinal coherence and instabilities due to the stochastic start-up process. A cavity-based laser (CBXFEL) is possible future direction development fully coherent stable sources. One challenges CBXFEL requirement for <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mi mathvariant="normal">μ</a:mi><a:mi...
Waveform diversity (WD) has the potential to profoundly impact radar operation through new advantageous uses of design degrees-of-freedom as long waveform and signal processing structure can be appropriately married physical electromagnetic (EM) system operation. Within this context, EM behavior recently introduced Spatially Modulated Metamaterial Array for Transmit (SMMArT) concept, itself a realization special class MIMO denoted spatial modulation, is analyzed by means full-wave...
<title>Abstract</title> Laser-wakefield accelerated electron beams have been demonstrated to be a viable alternative those produced by radio-frequency systems, with unique characteristics including intrinsic femtosecond-scale duration and micron-scale source size. In addition, they present the practical advantage of generally compact cost-effective setup inherently synchronsed high-power laser. The rapid progress experienced these accelerators is now posing question as whether could included...
Optimisation of betatron X-rays and their applications, SPIE Optics + Optoelectronics, 2021