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Madison Singleton, James Rosenzweig, Jingyi Tang and Zhirong Huang
There is a growing interest in designing and building compact X-ray Free Electron Lasers (FELs) for scientific and industry applications. In this paper, we report an X-ray Regenerative Amplifier FEL (XRAFEL) design based on a proposed Ultra Compact X-ray...
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Yiming Li, Joshua Mann and James Rosenzweig
Field electron emission, or electron tunneling through a potential energy (PE) barrier under the influence of a strong electrostatic (ES) or radio frequency (RF) field, is of broad interest to the accelerator physics community. For example, it is the sou...
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River R. Robles and James B. Rosenzweig
Laser-modulator-based micro-bunching of electron beams has been applied to many novel operating modes of X-ray free-electron lasers from harmonic generation to attosecond pulse production. Recently, it was also identified as a key enabling technology for...
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River Robles and James Rosenzweig
The creation of the first X-ray free-electron laser at SLAC in 2009 introduced the scientific community to coherent photons of unprecedented high brightness. These photons were produced, however, at the cost of billion-dollar-class price tags and kilomet...
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Joshua Mann, Gerard Lawler and James Rosenzweig
Electron rescattering has been well studied and simulated for cases with ponderomotive energies of the quasi-free electrons, derived from laser?gas and laser?surface interactions, lower than 50 eV. However, with advents in longer wavelengths and laser fi...
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Nathan Majernik and James Rosenzweig
An approach to fabricating Halbach array undulators using ?combs? machined from single magnets is introduced. This technique is especially relevant to the fabrication of short period micro-undulators with period lengths considerably less than the few-cen...
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Nathan Majernik, Walter Lynn, Yusuke Sakai and James Rosenzweig
A plasma-based opening switch, capable of handling kiloampere currents at kilovolt potentials on the microsecond timescale, is described and characterized. The principle of operation is the deflection of a laser-induced arc by an external magnetic field ...
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Nathan Majernik, Seth Pree, Yusuke Sakai, Brian Naranjo, Seth Putterman and James Rosenzweig
Recently, there has been intense interest in small dense plasma focus (DPF) devices for use as pulsed neutron and X-ray sources. Although DPFs have been studied for decades and scaling laws for neutron yield versus system discharge current and energy hav...
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Nathan Majernik, Walter Lynn, Yusuke Sakai and James Rosenzweig
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Nathan Majernik, Seth Pree, Yusuke Sakai, Brian Naranjo, Seth Putterman and James Rosenzweig
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Gerard Andonian, Nathan Burger, Nathan Cook, Scott Doran, Tara Hodgetts, Seongyeol Kim, Gwanghui Ha, Wanming Liu, Walter Lynn, Nathan Majernik, John Power, Alexey Pronikov, James Rosenzweig and Eric Wisniewski
The recently demonstrated concept of the plasma photocathode, whereby a high-brightness bunch is initialized by laser ionization within a plasma wakefield acceleration bubble, is informally referred to as Trojan Horse wakefield acceleration. In a similar...
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Gerard Emile Lawler, Fabio Bosco, Martina Carillo, Atsushi Fukasawa, Zenghai Li, Nathan Majernik, Yusuke Sakai, Sami Tantawi, Oliver Williams, Monika Yadav and James Rosenzweig
Future electron accelerator applications such as X-ray free electron lasers and colliders are dependent on significantly increasing beam brightness. With the observation that linac beam manipulation?s best preservation of max brightness is at the cathode...
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Oliver Williams, Atsushi Fukasawa, Yusuke Sakai, Gerard Andonian, Fabio Bosco, Martina Carillo, Pratik Manwani, Sean O?Tool, Jessica Pan, Monika Yadav and James Rosenzweig
Presented here are the first results of commissioning of the S-Band hybrid photoinjector and laser systems at the new accelerator and light source facility, MITHRA, at UCLA. The radiation bunker and capabilities of the facility are described with motivat...
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Gerard Lawler, Kunal Sanwalka, Yumeng Zhuang, Victor Yu, Timo Paschen, River Robles, Oliver Williams, Yusuke Sakai, Brian Naranjo and James Rosenzweig
Electron beams are essential tools in modern science. They are ubiquitous in fields ranging from microscopy to the creation of coherent ultra-fast X-rays to lithography. To keep pace with demand, electron beam brightness must be continually increased. On...
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Ryan Roussel, Gerard Andonian, Claire Hansel, Gerard Lawler, Walter Lynn, Nathan Majernik, River Robles, Kunal Sanwalka, Eric Wisniewski and James Rosenzweig
An externally heated, hollow cathode arc source was recommissioned at UCLA for use in experiments to drive plasma wakefields with shaped beams at the Argonne Wakefield Accelerator. The hollow cathode arc source provides a robust plasma column with a dens...
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James B. Rosenzweig, Gerard Andonian, Ronald Agustsson, Petr M. Anisimov, Aurora Araujo, Fabio Bosco, Martina Carillo, Enrica Chiadroni, Luca Giannessi, Zhirong Huang, Atsushi Fukasawa, Dongsung Kim, Sergey Kutsaev, Gerard Lawler, Zenghai Li, Nathan Majernik, Pratik Manwani, Jared Maxson, Janwei Miao, Mauro Migliorati, Andrea Mostacci, Pietro Musumeci, Alex Murokh, Emilio Nanni, Sean O?Tool, Luigi Palumbo, River Robles, Yusuke Sakai, Evgenya I. Simakov, Madison Singleton, Bruno Spataro, Jingyi Tang, Sami Tantawi, Oliver Williams, Haoran Xu and Monika YadavaddShow full author listremoveHide full author list
Recently, considerable work has been directed at the development of an ultracompact X-ray free-electron laser (UCXFEL) based on emerging techniques in high-field cryogenic acceleration, with attendant dramatic improvements in electron beam brightness and...
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Fabio Bosco, Gerard Andonian, Obed Camacho, Martina Carillo, Enrica Chiadroni, Anna Giribono, Gerard Lawler, Nathan Majernik, Pratik Manwani, Mauro Migliorati, Andrea Mostacci, Luigi Palumbo, Gilles Jacopo Silvi, Bruno Spataro, Cristina Vaccarezza, Monika Yadav and James Rosenzweig
Particle-driven plasma wakefield acceleration (PWFA) exploits the intense wakefields excited in a plasma by a high-brightness driver beam in order to accelerate a trailing, properly delayed witness electron beam. Such a configuration offers notable advan...
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