Journal Article

PUBDB-2023-01295

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Colliding pulse injection of polarized electron bunches in a laser-plasma accelerator

Bohlen, S. (First author)DESY* ; Gong, Z. ; Quin, M. J. ; Tamburini, M. ; Poder, K. (Corresponding author)DESY*

2023
APS College Park, MD

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Please use a persistent id in citations: doi:10.1103/PhysRevResearch.5.033205  doi:10.3204/PUBDB-2023-01295

Report No.: arXiv:2304.02922

Abstract: 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.

Note: Journal has changed: Physical Review Research (gold oa)

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Contributing Institute(s):

1. Plasma Accelerators (MPA)
2. Strahlenschutz (D3)
3. PAs for Industrial and Health Applicatio (MPA4)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)
2. 6G2 - FLASH (DESY) (POF4-6G2) (POF4-6G2)

Experiment(s):

1. FLASHForward

Appears in the scientific report 2023

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Bohlen, S.DESY* ; Gong, Z. ; Quin, M. J. ; Tamburini, M. ; Põder, K. (Corresponding author)DESY*
Colliding Pulse Injection of Polarized Electron Bunches in a Laser-Plasma Accelerator
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