101 citations · 184 across the 25 of their papers we have counts for
25 papers
Considerations on wakefield effects in a VUV FELO driven by a superconducting tesla-type linac
Alex H. Lumpkin, Henry P. Freund, Peter Van der Slot
The effects on beam dynamics from long-range and short-range wakefields from TESLA-type cavities are considered in regard to a proposed FEL oscillator (FE-LO) operating at 120 nm.…
Submacropulse electron-beam dynamics correlated with higher-order modes in a Tesla-type cryomodule
A. H. Lumpkin, R. Thurman-Keup, D. Edstrom +7
Experiments were performed at the Fermilab Accelerator Science and Technology (FAST) facility to elucidate the effects of long-range wakefields (LRWs) in TESLA-type superconducting…
Tapered helical undulator system for high efficiency energy extraction from a high brightness electron beam
Y. Park, R. Agustsson, W. J. Berg +18
In this paper we discuss the design choices and construction strategy of the tapered undulator system designed for a high energy extraction efficiency experiment in the ultraviolet…
Observations of Coherent Optical Transition Radiation Interference Fringes Generated by Laser Plasma Accelerator Electron Beamlets
Alex Lumpkin, Maxwell LaBerge, Donald Rule +10
We report initial observations of coherent optical transition radiation interferometry (COTRI) patterns generated by microbunched electrons from laser-driven plasma accelerators (L…
Submacropulse Electron-Beam Dynamics Correlated With Higher-Order Modes In Tesla-Type Superconducting RF Cavities
A. H. Lumpkin, R. Thurman-Keup, D. Edstrom +6
We report the direct observations of sub-macropulse beam centroid oscillations correlated with higher order modes (HOMs) which were generated by off-axis electron beam steering in…
First Point-Spread Function and X-Ray Phase-Contrast Imaging Results With an 88-mm Diameter Single Crystal
A. H. Lumpkin, A. B. Garson, M. A. Anastasio
In this study, we report initial demonstrations of the use of single crystals in indirect x-ray imaging with a benchtop implementation of propagation-based (PB) x-ray phase contras…