Poster

PUBDB-2025-04552

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Beam Dynamics Optimization for a High-brightness PhotoInjector with various Photocathode Laser Pulse Shapes

Zeeshan, S. (Corresponding author)DESY* ; Krasilnikov, M.DESY* ; Li, X.DESY* ; Bazyl, D.DESY* ; Zagarodov, I.DESY*

2025

Abstract: At PITZ, a comprehensive study is conducted to analyse thefactors influencing emittance growth in the European XFEL (EuXFEL) CWsuperconducting radio-frequency (SRF) setup. Emittance growth due tospace charge effects can be mitigated using advanced photocathode laserpulse shapes. Multiobjective optimizations are reported with focus onminimizing emittance and maximizing brightness. The optimization is initiallycarried out for the CW SRF injector section planned for EuXFEL. Theoptimized cases are then further tracked through start-to-end (S2E)simulations to evaluate their behaviour in the compression stages ofEuXFEL. A comparative analysis of G, FT, EL, and IP laser profiles ispresented, assessing their efficiency not only in terms of emittance but alsoin 4D and 6D brightness before & after compression.

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Contributing Institute(s):

1. Technologie (Z_PITZ)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)

Experiment(s):

1. Photo Injector Test Facility

Appears in the scientific report 2025

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