19–24 May 2024
Music City Center
US/Central timezone

Dark current simulations in accelerating structures operating with short RF pulses

TUPR11
21 May 2024, 16:00
2h
Rock 'n Roll (MCC Exhibit Hall A)

Rock 'n Roll

MCC Exhibit Hall A

Poster Presentation MC7.T06 Room Temperature RF Tuesday Poster Session

Speaker

Gaurab Rijal (Northern Illinois University)

Description

The attainable acceleration gradient in normal conducting RF accelerating structure is limited by RF breakdown, a major challenge in high gradient operation. Some of the recent experiments at the Argonne Wakefield Accelerator (AWA) facility suggest the possibility of breakdown mitigation by using short RF pulses (on the order of a few nanoseconds) to drive the accelerating structures. To understand the physics of RF breakdown on a nanosecond time scale, we simulated the dark current in few accelerating structures in both long-pulse and short-pulse regimes comparatively, and studied multiple potential breakdown initiators, including field emission and multipacting. Our simulations suggest the potential of a class of accelerators designed to work in the short-pulse regime.

Funding Agency

This research was supported by the U.S. Department of Energy, Office of Science, Office of High Energy Physics under Award DE-SC0021928.

Region represented North America
Paper preparation format LaTeX

Primary author

Gaurab Rijal (Northern Illinois University)

Co-authors

John Power (Argonne National Laboratory) Michael Shapiro (Massachusetts Institute of Technology) Xueying Lu (Argonne National Laboratory)

Presentation materials

There are no materials yet.