Seeding of the Current Filamentation Instability for an Accelerator Beam in a Capillary Plasma

被引：0

作者：

Allen, Brian ^{[1
]}

Martins, Joana ^{[2
]}

Silva, Luis O. ^{[2
]}

Yakimenko, Vitaly ^{[3
]}

Fedurin, Mikhail ^{[3
]}

Kusche, Karl ^{[3
]}

Babzien, Marcus ^{[3
]}

Huang, Chengkun ^{[4
]}

Mori, Warren ^{[5
]}

Muggli, Patric ^{[1
,6
]}

机构：

[1] Univ So Calif, Dept Elect Engn, Los Angeles, CA 90089 USA

[2] Inst Super Tecn, GoLP Inst Plasmas & Fusao Nucl, Lab Associado, Lisbon, Portugal

[3] Brookhaven Natl Lab, Upton, NY 11973 USA

[4] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[5] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90024 USA

[6] Max Planck Inst Phys & Astrophys, Munich, Germany

来源：

ADVANCED ACCELERATOR CONCEPTS | 2012年 / 1507卷

基金：

美国国家科学基金会;

关键词：

current filamentation instability; beam-plasma interaction; plasma instability; beam instability;

D O I：

10.1063/1.4773688

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We show that the current filamentation instability (CFI) can be seeded by introducing a pattern in the initial transverse density distribution of an electron bunch propagating in a uniform plasma. The pattern is created by using wires that selectively scatter some of the bunch particles before the plasma. We use the code QuickPIC to study the CFI, in particular the instability growth along the plasma and the beam pattern at the plasma exit for parameters available at the BNL-ATF. Seeding leads to a larger growth rate, shorter saturation length and recognizable filament pattern.

引用

页码：154 / 159

页数：6

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