Colliding pulse injection of polarized electron bunches in a laser-plasma accelerator

被引：3

作者：

Bohlen S. ^{[1
]}

Gong Z. ^{[2
]}

Quin M.J. ^{[2
]}

Tamburini M. ^{[2
]}

Põder K. ^{[1
]}

机构：

[1] Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, Hamburg

[2] Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, Heidelberg

来源：

Physical Review Research | 2023年 / 5卷 / 03期

基金：

英国科研创新办公室;

关键词：

615.3 Magnetohydrodynamics (MHD) Power Generation - 701.2 Magnetism: Basic Concepts and Phenomena - 744.8 Laser Beam Interactions - 744.9 Laser Applications - 932.1 High Energy Physics - 932.1.1 Particle Accelerators - 932.3 Plasma Physics;

D O I：

10.1103/PhysRevResearch.5.033205

中图分类号：

学科分类号：

摘要：

Highly polarized, multi-kiloampere-current electron bunches from compact laser-plasma accelerators are desired for numerous applications. Current proposals to produce these beams suffer from intrinsic limitations to the reproducibility, charge, beam shape, and final polarization degree. In this paper, we propose colliding pulse injection (CPI) as a technique for the generation of highly polarized electron bunches from prepolarized plasma sources. Using particle-in-cell simulations, we show that colliding pulse injection enables trapping and precise control over electron spin evolution, resulting in the generation of high-current (multi-kA) electron bunches with high degrees of polarization (up to 95% for >2kA). Bayesian optimization is employed to optimize the multidimensional parameter space associated with CPI to obtain a percent-level energy spread, submicron normalized emittance electron bunches with 90% polarization using 100-TW class laser systems. © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

引用

共 62 条

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