20th Advanced Accelerator Concepts Workshop

Session

WGs 2+4 Joint Session

JS_2_4

Nov 10, 2022, 8:30 AM

Salon E

Description

Joint session between working groups 2 & 4:
WG2 - Computation for Accelerator Physics
WG4 - Beam-Driven Acceleration

37. Relativistically induced ballistic transport and novel effects underlying PV/m plasmonics

Prof. Aakash Sahai (University of Colorado Denver)

11/10/22, 8:30 AM

WG4 Oral: Beam-Driven Acceleration

Contributed Oral

PV/m plasmonics model pioneers extreme plasmons where the free electron Fermi gas constituted by the conduction band electrons in condensed matter is excited to its ultimate limits. Here we discuss novel physical mechanisms that begin to dominate the physics of extreme plasmons. For instance, relativistically induced ballistic electron transport helps explain earlier beam-metal interaction...

132. Spatiotemporal dynamics of beam-plasma instabilities in the ultra-relativistic regime

Pablo San Miguel (Laboratoire d'Optique Appliquée / Instituto Superior Técnico)

11/10/22, 8:45 AM

WG2 Oral: Computation for Accelerator Physics

Contributed Oral

Relativistic beam-plasma instabilities play a crucial role in high-energy astrophysical sources, such as gamma-ray bursts or blazars, in particular to create the electromagnetic turbulence responsible for the synchrotron emission of accelerated particles in these sources. These instabilities are also important in certain experimental concepts of particle accelerators or ultra-intense photonic...

261. Optimal beam loading to 20 GeV through wakefield slope rotation using an evolving electron driver

Thamine Dalichaouch (UCLA)

11/10/22, 9:00 AM

WG4 Oral: Beam-Driven Acceleration

Contributed Oral

The goals of plasma-based acceleration (PBA) are high gradient, high efficient acceleration and high quality beam generation. Various synchronized injection schemes utilizing PBA have been proposed and investigated to generate beams capable of driving a compact x-ray free electron laser (XFEL). In each of these ideas, the main challenge is how to maximize the energy transfer to the injected...

127. Optimization of transformer ratio and beam loading in plasma wakefield accelerator with a structure-exploiting algorithm

Qianqian Su

11/10/22, 9:15 AM

WG4 Oral: Beam-Driven Acceleration

Contributed Oral

Plasma-based acceleration has emerged as a promising candidate as an accelerator technology for a future linear collider or a next-generation light source. We consider the plasma wakefield accelerator (PWFA) concept where a plasma wave wake is excited by a particle beam and a trailing beam surfs on the wake. For a linear collider, the energy transfer from the drive beam to the wake and from...

157. Witness beam realignment in plasma wakefield accelerators in the linear collider regime

Lance Hildebrand (University of California, Los Angeles)

11/10/22, 9:30 AM

WG4 Oral: Beam-Driven Acceleration

Contributed Oral

Beam driven plasma wakefield acceleration (PWFA) has shown the ability to accelerate electron beams with high acceleration gradients ~50 GeV/m, high efficiency, and low energy spread. This has inspired future linear collider (LC) designs where witness beams are accelerated over a series of plasma stages. In the LC regime, the witness beam emittance is ~100 nm and the charge is ~1 nC. With...