Electron-Beam Corkscrew Motion in an Advanced Linear Induction Accelerator

Ekdahl, Carl

doi:10.1109/tps.2021.3120877

Electron-Beam Corkscrew Motion in an Advanced Linear Induction Accelerator

Journal Article · Mon Nov 01 00:00:00 EDT 2021 · IEEE Transactions on Plasma Science

DOI:https://doi.org/10.1109/tps.2021.3120877· OSTI ID:1994124

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Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Scorpius is a multipulse linear induction accelerator (LIA) under development for flash radiography. Because it has substantially more cells than present LIAs, higher magnetic focusing fields are needed to suppress beam breakup (BBU). Therefore, it is more susceptible to corkscrew motion of the beam, which also depends on beam energy spread and focusing magnet misalignments. For energy spread and alignment tolerances expected for Scorpius, a magnetic tune designed to suppress BBU is shown to produce corkscrew motion within the range that can be controlled through the use of steering dipoles on existing LIAs. Finally, a gap-voltage modulation scheme is shown to almost completely eliminate chromatic effects such as corkscrew.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 1994124

Report Number(s):: LA-UR-21-26539

Journal Information:: IEEE Transactions on Plasma Science, Journal Name: IEEE Transactions on Plasma Science Journal Issue: 11 Vol. 49; ISSN 0093-3813

Publisher:: IEEECopyright Statement

Country of Publication:: United States

Language:: English

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