Explanipedia

Single-Shot Ionization-Based Transverse Profile Monitor for Pulsed Electron Beams Open

Paul Denham, Alex Ody, P. Musumeci, Nathan Burger, Nathan Cook , et al. · 2024

We present an experimental demonstration of a single-shot, non-destructive electron beam diagnostic based on the ionization of a low-density pulsed gas jet. In our study, 7~MeV electron bunches from a radio frequency (RF) photoinjector, ca…

A rotor-based multileaf collimator for beam shaping Open

N. Majernik, G. Andonian, A. Parrack, J. Rosenzweig, S. Doran , et al. · 2024

We introduce a new style of multileaf collimator which employs rotors with angularly dependent radius to control the masking aperture: a rotor-based multileaf collimator (RMLC). Using a padlock-inspired mechanism, a single motor can set do…

Reconstructing Gamma-ray Energy Distributions from PEDRO Pair Spectrometer Data Open

Monika Yadav, M. H. Oruganti, Brian Naranjo, G. Andonian, Ö. Apsimon , et al. · 2024

Photons emitted from high-energy electron beam interactions with high-field systems, such as the upcoming FACET-II experiments at SLAC National Accelerator Laboratory, may provide deep insight into the electron beam's underlying dynamics a…

Analysis of the blowout plasma wakefields produced by drive beams with elliptical symmetry Open

Pratik Manwani, Y.J. Kang, Joshua Mann, Brian Naranjo, G. Andonian , et al. · 2024

In the underdense (blowout) regime of plasma wakefield acceleration (PWFA), the particle beam is denser than the plasma. Under these conditions, the plasma electrons are nearly completely rarefacted from the beam channel, resulting in a no…

Drive Bunch Train for the Dielectric Trojan Horse Experiment at the Argonne Wakefield Accelerator Open

G. Andonian, Nathan Burger, Nathan Cook, Scott Doran, Tara Hodgetts , et al. · 2024

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 acceleratio…

Manipulation and Wakefield Effects on Multi-Pulse Driver Beams in PWFA Injector Stages Open

Fabio Bosco, G. Andonian, Obed Camacho, Martina Carillo, E. Chiadroni , et al. · 2024

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 offer…

Plasma-based particle sources Open

M. Fuchs, G. Andonian, Ö. Apsimon, M. Büscher, M. C. Downer , et al. · 2024

High-brightness particle beams generated by advanced accelerator concepts have the potential to become an essential part of future accelerator technology. In particular, high-gradient accelerators can generate and rapidly accelerate partic…

A high-flux compact X-ray free-electron laser for next-generation chip metrology needs Open

J. B. Rosenzweig, G. Andonian, R. Agustsson, Petr M. Anisimov, Aurora Araujo , et al. · 2023

Recently, considerable work has been directed at development of a ultra-compact X-ray free-electron laser based on emerging techniques in high field cryogenic acceleration, with attendant dramatic improvements in electron beam brightness, …

Machine Learning-Based Spectrum Reconstruction and Modeling Beam Perturbation Effects on Betatron Radiation Open

Monika Yadav, Maanas Hemanth Oruganti, Brian Naranjo, Jack Phillips, Sunny Liang , et al. · 2023

A new method for multi-shot reconstruction of high-energy photon distributions in the context of studying the interaction between a beam and a plasma in plasma wakefield acceleration (PWFA) experiments is presented. The study investigates …

Observation of Skewed Electromagnetic Wakefields in an Asymmetric Structure Driven by Flat Electron Bunches Open

W. Lynn, T. Xu, G. Andonian, Scott Doran, Gwanghui Ha , et al. · 2023

Relativistic charged-particle beams which generate intense longitudinal fields in accelerating structures also inherently couple to transverse modes. The effects of this coupling may lead to beam break-up instability, and thus must be coun…

PetaVolts per meter Plasmonics: introducing extreme nanoscience as a route towards scientific frontiers Open

Aakash A. Sahai, Mark Gołkowski, Stephen D. Gedney, T. Katsouleas, G. Andonian , et al. · 2023

A new class of plasmons has opened access to unprecedented PetaVolts per meter electromagnetic fields which can transform the paradigm of scientific and technological advances. This includes non-collider searches in fundamental physics in …

Single-shot, transverse self-wakefield reconstruction from screen images Open

Nathan Majernik, W. Lynn, G. Andonian, T. Xu, P. Piot , et al. · 2023

A single-shot method to reconstruct the transverse self-wakefields acting on a beam, based only on screen images, is introduced. By employing numerical optimization with certain approximations, a relatively high-dimensional parameter space…

Flat beam plasma wakefield accelerator Open

Pratik Manwani, Nathan Majernik, Joshua Mann, Yunbo Kang, Derek Chow , et al. · 2023

Particle beams with highly asymmetric emittance ratios are expected at the interaction point of high energy colliders. These asymmetric beams can be used to drive high gradient wakefields in dielectrics and plasma. In the case of plasma, t…

Beam shaping using an ultra-high vacuum multileaf collimator and emittance exchange beamline Open

N. Majernik, G. Andonian, W. Lynn, S. Kim, C. Lorch , et al. · 2022

We report the development of a multileaf collimator (MLC) for charged particle beams, based on independently actuated tungsten strips which can selectively scatter unwanted particles. The MLC is used in conjunction with an emittance exchan…

Drive beam sources and longitudinal shaping techniques for beam driven accelerators Open

François Lémery, G. Andonian, S. Doebert, Gwanghui Ha, Xiaohui Lu , et al. · 2022

Linear colliders are an attractive platform to explore high-precision physics of newly discovered particles. The recent significant progress in advanced accelerator technologies has motivated their applications to colliders which has been …

PetaVolts per meter Plasmonics: Snowmass21 White Paper Open

Aakash A. Sahai, Mark Gołkowski, Stephen D. Gedney, T. Katsouleas, G. Andonian , et al. · 2022

Plasmonic modes offer the potential to achieve PetaVolts per meter fields, that would transform the current paradigm in collider development in addition to non-collider searches in fundamental physics. PetaVolts per meter plasmonics relies…

Continuous and Coordinated Efforts of Structure Wakefield Acceleration (SWFA) Development for an Energy Frontier Machine Open

Chunguang Jing, John Power, Jiahang Shao, Gwanghui Ha, P. Piot , et al. · 2022

Structure wakefield acceleration (SWFA) is well suited for the linear collider (LC) application due to its natural ability to accelerate positrons and preserve emittance. Under the SWFA roadmap, which was developed in response to Snowmass …

Drive Beam Sources and Longitudinal Shaping Techniques Open

François Lémery, G. Andonian, S. Doebert, Gwanghui Ha, Xueying Lü , et al. · 2022

Linear colliders are an attractive platform to explore high-precision physics of newly discovered particles. The recent significant progress in advanced accelerator technologies has motivated their applications to colliders which has been …

Excitation of Very High Gradient Plasma Wakefields From Nanometer Scale Beams Open

Pratik Manwani, H. S. Ancelin, G. Andonian, D. R. Chow, N. Majernik , et al. · 2022

The plasma based terawatt attosecond project at SLAC, termed PAX, offers near mega-Ampere beams that could be used to demonstrate plasma wakefield acceleration at very high gradients (TV/m). The beam has a large aspect ratio which allows i…

Advanced RF Structures for Wakefield Acceleration and High-Gradient Research Open

Xueying Lü, Jiahang Shao, J. B. Power, Chunguang Jing, Gwanghui Ha , et al. · 2022

Structure wakefield acceleration (SWFA) is one of the most promising AAC schemes in several recent strategic reports, including DOE's 2016 AAC Roadmap, report on the Advanced and Novel Accelerators for High Energy Physics Roadmap (ANAR), a…

Report of the Topical Group on Physics Beyond the Standard Model at Energy Frontier for Snowmass 2021 Open

T. Bose, A. Boveia, C. Doglioni, S. Pagan Griso, James Hirschauer , et al. · 2022

This is the Snowmass2021 Energy Frontier (EF) Beyond the Standard Model (BSM) report. It combines the EF topical group reports of EF08 (Model-specific explorations), EF09 (More general explorations), and EF10 (Dark Matter at Colliders). Th…

Advanced RF Structures for Wakefield Acceleration and High-Gradient Research Open

Xueying Lu, Jiahang Shao, John Power, Chunguang Jing, Gwanghui Ha , et al. · 2022

Structure wakefield acceleration (SWFA) is one of the most promising AAC schemes in several recent strategic reports, including DOE's 2016 AAC Roadmap, report on the Advanced and Novel Accelerators for High Energy Physics Roadmap (ANAR), a…

Transverse Stability in an Alternating Symmetry Planar Dielectric Wakefield Structure Open

Walter R. Lynn, G. Andonian, Darrell Doran, Seong-Yeol Kim, Nathan Majernik , et al. · 2022

Dielectric Wakefield Acceleration (DWA) is a promising technique for realizing the next generation of linear colliders. It provides access to significantly higher accelerating gradients than traditional radio-frequency cavities. One impedi…

Positron Driven High-Field Terahertz Waves in Dielectric Material Open

Nathan Majernik, G. Andonian, O. Williams, Brendan O’Shea, P. D. Hoang , et al. · 2021

Advanced acceleration methods based on wakefields generated by high energy electron bunches passing through dielectric-based structures have demonstrated $>$GV/m fields, paving the first steps on a path to applications such as future compa…

Ultrahigh brightness beams from plasma photoguns Open

A. F. Habib, T. Heinemann, G. G. Manahan, Leslie Rutherford, D. Ullmann , et al. · 2021

Plasma photocathodes open a path towards tunable production of well-defined, compact electron beams with normalized emittance and brightness many orders of magnitude better than state-of-the-art. Such beams could have a far-reaching impact…

Modeling Betatron Radiation Diagnostics for E-310 -- Trojan Horse Open

Monika Yadav, C. Hansel, Yumeng Zhuang, Brian Naranjo, Nathan Majernik , et al. · 2021

The E-310 experiment at the Facility for Advanced Accelerator Experimental Tests II (FACET-II) at SLAC National Accelerator Laboratory aims to demonstrate the creation of high brightness beams from a plasma photocathode. Betatron radiation…

Multileaf Collimator for Real-Time Beam Shaping using Emittance Exchange Open

Nathan Majernik, G. Andonian, Ryan Roussel, Scott Doran, Gwanghui Ha , et al. · 2021

Emittance exchange beamlines employ transverse masks to create drive and witness beams of variable longitudinal profile and bunch spacing. Recently, this approach has been used to create advanced driver profiles and demonstrate record-brea…

Advanced Photoinjector Development at the UCLA SAMURAI Laboratory Open

Atsushi Fukasawa, G. Andonian, Obed Camacho, Claire Hansel, Gerard Lawler , et al. · 2021

UCLA has recently constructed SAMURAI, a new radiation bunker and laser infrastructure for advanced accelerator research. In its first phase, we will build a 30 MeV photoinjector with an S-band hybrid gun. The beam dynamics simulation for …

Strong Quadrupole Wakefield Based Focusing in Dielectric Wakefield Accelerators Open

W. Lynn, G. Andonian, Nathan Majernik, J. B. Rosenzweig · 2021

We propose here to exploit the quadrupole wakefields in an alternating symmetry slab-based dielectric wakefield accelerator (DWA) to produce second-order focusing. The resultant focusing is found to be strongly dependent on longitudinal po…

Dielectric Wakefield Acceleration with a Laser Injected Witness Beam Open

G. Andonian, Tara Campese, Nathan Cook, Darrell Doran, Gwanghui Ha , et al. · 2021

The plasma photocathode concept, whereby a two-species gas mixture is used to generate a beam -driven accelerating wakefield and a laser-ionized generation of a witness beam, was recently experimentally demonstrated. In a variation of this…

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