Poster

PUBDB-2025-04661

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

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

2025

Abstract: PITZ at DESY Zeuthen focuses on the development and optimization of high-brightness electron sources for the European XFEL. At PITZ, a thorough study of factors influencing emittance growth is carried out. Emittance growth due to space charge can be managed through precise laser pulse shaping techniques. 4D and 6D Integral brightness that incorporates not only the emittance, but electron beam current profile and longitudinal phase space properties from laser pulse shapes are proposed as objectives for the optimization. Multiobjectve optimization studies with ASTRA are aimed at not only minimizing emittance but maximizing brightness for various laser temporal profiles and widths. A comparative analysis for Gaussian, flattop and ellipsoidal and inverted parabolic Laser profiles is presented to compare their efficiency not only in terms of emittance but 4D and 6D brightness.

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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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