6 papers · 1 filter
Limits on energy recovery for positron acceleration in a warm plasma column
Max Varverakis, Spencer Gessner, Severin Diederichs +1
Beam-driven plasma wakefield acceleration (PWFA) is a promising candidate for realizing a future linear collider, owing to the extremely high field gradients that are produced in p…
Liquid xenon positron target flow optimizations
Max Varverakis, Spencer Gessner, Silviu Covrig Dusa +3
In a previous work, we explored liquid xenon (LXe)-based positron targets as an alternative to conventional high-Z metallic targets for high energy physics applications. In this pa…
Moderator Modeling for High Intensity Slow Positron Sources
Sophie Crisp, Ryland Goldman, Spencer Gessner
Slow positron beams enable diverse applications, from surface-sensitive materials studies to positronium physics, but progress is limited by source intensity and brightness. In lin…
Strong-field focusing of high-energy particles in beam-multifoil collisions
Aimé Matheron, Doug Storey, Max F. Gilljohann +25
Extreme beams of charged particles and photons, reaching ultrahigh densities or producing intense gamma-ray bursts, are central to accelerator physics, laboratory astrophysics, and…
Moderator Simulation for the Compact Positron Source at NLCTA
Ryland Goldman, Sophie Crisp, Spencer Gessner
Positron moderation is a key part of the production of slow positrons. This paper examines G4beamline simulations of various moderator designs and the addition of a radiofrequency…
Start-To-End Simulations of a Compact, Linac-Based Positron Source
Sophie Crisp, Ryland Goldman, Arif Ismail +1
Slow positrons are increasingly important to the study of material surfaces. For these kinds of studies, the positrons must have low emittance and relatively high brightness. Unfor…