43 citations · 167 across the 25 of their papers we have counts for
15 papers · 1 filter
Experimental verification of space-charge saturation scaling laws in high-gradient photocathode RF guns
Paul Denham, David Garcia, Atharva Kulkarni +4
We investigate the limits of photoemission yield in a high-gradient S-band radiofrequency photoinjector in the space-charge-dominated regime. Using an RF phase-scan technique, wher…
Harnessing Plasmonic Interference for Nanoscale Ultrafast Electron Sources
Alimohammed Kachwala, Mansoure Moeini Rizi, Christopher M Pierce +3
In this paper we demonstrate the use of plasmonic focusing in conjunction with non-linear photoemisison to develop geometrically flat nanoscale electron sources with less than 40 p…
Virtual-Diagnostic-Based Time Stamping for Ultrafast Electron Diffraction
Frederick Cropp, Lauren Moos, Alexander Scheinker +6
In this work, non-destructive virtual diagnostics are applied to retrieve the electron beam time of arrival and energy in a relativistic ultrafast electron diffraction (UED) beamli…
The LCLS-II Gun & Buncher LLRF Controller Upgrade
Christos Bakalis, Andrew Benwell, Daron Chabot +6
LCLS-II is currently in its commissioning phase at SLAC. It is an X-ray FEL driven by a CW superconducting LINAC. The beam injector plays a crucial role in the overall performance…
Experimental characterization of photoemission from plasmonic nanogroove arrays
Christopher M. Pierce, Daniel B. Durham, Fabrizio Riminucci +5
Metal photocathodes are an important source of high-brightness electron beams, ubiquitous in the operation of both large-scale accelerators and table-top microscopes. When the surf…
Report of Snowmass 21 Accelerator Frontier Topical Group 6 on Advanced Accelerators
C. Geddes, M. Hogan, P. Musumeci +1
The Snowmass 2021 Accelerator Frontier topical group \# 6 on Advanced Accelerator Concepts, covers new R\&D concepts for particle acceleration, generation, and focusing. Based on c…
Electron Sources for Accelerators
Daniele Filippetto, Joe Grames, Carlos Hernandez-Garcia +5
Electron sources are essential to an array of electron accelerator supporting research in high-energy physics and beyond. This report summarizes the "Snowmass 2021 Electron Source…
Feedback and control systems for future linear colliders: White Paper for Snowmass 2021 Topical Group AF07-RF
Daniele Filippetto, Carlos Serrano, Qiang Du +9
Particle accelerators for high energy physics will generate TeV-scale particle beams in large, multi-Km size machines colliding high brightness beams at the interaction point [1-4]…
Snowmass Whitepaper AF6: Plasma-Based Particle Sources
M. Fuchs, B. A. Shadwick, N. Vafaei-Najafabadi +9
High-brightness beams generated by particle sources based on advanced accelerator concepts have the potential to become an essential part of future accelerator technology. High-gra…
Laser-Driven Structure-Based Accelerators
R. J. England, D. Filippetto, G. Torrisi +17
Particle acceleration in microstructures driven by ultrafast solid state lasers is a rapidly evolving area of advanced accelerator research, leading to a variety of concepts based…
Snowmass21 Accelerator Modeling Community White Paper
S. Biedron, L. Brouwer, D. L. Bruhwiler +24
After a summary of relevant comments and recommendations from various reports over the last ten years, this paper examines the modeling needs in accelerator physics, from the model…
Adaptive deep learning for time-varying systems with hidden parameters: Predicting changing input beam distributions of compact particle accelerators
Alexander Scheinker, Frederick Cropp, Sergio Paiagua +1
Machine learning (ML) tools such as encoder-decoder deep convolutional neural networks (CNN) are able to extract relationships between inputs and outputs of large complex systems d…
Single shot cathode transverse momentum imaging in high brightness photoinjectors
Peng-Wei Huang, Houjun Qian, Ye Chen +18
In state of the art photoinjector electron sources, thermal emittance from photoemission dominates the final injector emittance. Therefore, low thermal emittance cathode developmen…
RF design of APEX2 two-cell continuous-wave normal conducting photoelectron gun cavity based on multi-objective genetic algorithm
T. Luo, H. Feng, D. Filippetto +8
High brightness, high repetition rate electron beams are key components for optimizing the performance of next generation scientific instruments, such as MHz-class X-ray Free Elect…
Knife-edge based measurement of the 4D transverse phase space of electron beams with picometer-scale emittance
Fuhao Ji, Jorge Giner Navarro, Pietro Musumeci +3
Precise manipulation of high brightness electron beams requires detailed knowledge of the particle phase space shape and evolution. As ultrafast electron pulses become brighter, ne…