1–6 Jun 2025
Taipei International Convention Center (TICC)
Asia/Taipei timezone

Beam dynamics optimization in high-brightness Photo Injector with various photocathode laser pulse shapes

TUPS019
3 Jun 2025, 16:00
2h
Exhibiton Hall A _Salmon (TWTC)

Exhibiton Hall A _Salmon

TWTC

Poster Presentation MC3.T02 Electron Sources Tuesday Poster Session

Speaker

Sumaira Zeeshan (Deutsches Elektronen-Synchrotron DESY)

Description

At PITZ, a comprehensive study is conducted to analyze the factors influencing emittance growth in the European XFEL (EuXFEL) continuous wave (CW) setup. Emittance growth due to space charge effects can be mitigated using advanced photocathode laser pulse shapes. To optimize beam quality, multiobjective optimization studies using ASTRA are performed, focusing not only on minimizing emittance but also on maximizing beam brightness for various laser temporal profiles and dura-tions. The optimization is initially carried out for the CW injector section planned for EuXFEL. The optimized cases are then further tracked through start-to-end (S2E) simulations to evaluate their behavior in the compression stages of EuXFEL. A comparative analysis of gaussian, flattop, ellipsoidal, and inverted parabolic laser profiles is presented, assessing their efficiency not only in terms of emittance but also in 4D and 6D brightness. Finally, the results of the optimized photoinjector setup and the beam properties after the final bunch compression will be presented.

Funding Agency

DESY

Region represented Europe
Paper preparation format Word

Author

Sumaira Zeeshan (Deutsches Elektronen-Synchrotron DESY)

Co-authors

Mikhail Krasilnikov (Deutsches Elektronen-Synchrotron DESY) Xiangkun Li (Deutsches Elektronen-Synchrotron DESY) Dmitry Bazyl (Deutsches Elektronen-Synchrotron DESY) Igor Zagorodnov (Deutsches Elektronen-Synchrotron DESY)

Presentation materials

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