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

Novel photoinjector laser providing advanced pulse shaping for FLASH and EuXFEL

THPB027
5 Jun 2025, 15:30
2h
Exhibiton Hall A _Bear (TWTC)

Exhibiton Hall A _Bear

TWTC

Poster Presentation MC7.T25 Lasers Thursday Poster Session

Speaker

Denis Ilia (Deutsches Elektronen-Synchrotron DESY)

Description

We recently commissioned the Next GenerAtion Photocathode Laser system (NEPAL) in Hamburg’s XFEL facilities (FLASH and EuXFEL) and at DESY’s Photoinjector Test Facility (PITZ). The system delivers deep UV pulse trains up to 1 ms long at repetition rates as high as 4.5 MHz, with temporal and spatial shaping capabilities and individual amplitude control for bunch charge manipulation. The shaping features enable the generation of exceptionally low emittance electron beams, essential for extending the EuXFEL X-ray photon energy beyond 25 keV and for future high duty cycle upgrades. Temporal shaping is achieved through a high-resolution spatial light modulator in the near-infrared driver laser, allowing precise spectral amplitude and phase control of UV pulses. We will present advanced control schemes that pre-compensate for laser nonlinearities and initial experimental results at EuXFEL. We generated UV flat-top pulse profiles with durations ranging from 10ps to 20ps and successfully transferred them onto the electron beam. This achievement represents a significant step toward emittance optimization at EuXFEL and will expand the facility's operational energy range in the near future.

Region represented Europe
Paper preparation format LaTeX

Author

Denis Ilia (Deutsches Elektronen-Synchrotron DESY)

Co-authors

Christoph Mahnke (Deutsches Elektronen-Synchrotron DESY) Areeb Ahmed (Deutsches Elektronen-Synchrotron DESY) Nihat Ay (Hamburg University of Technology) Oender Akcaalan (Deutsches Elektronen-Synchrotron DESY) Frank Brinker (Deutsches Elektronen-Synchrotron DESY) Meng Cai (Deutsches Elektronen-Synchrotron DESY) Dr Ye Chen (Deutsches Elektronen-Synchrotron DESY) Yujiao Jiang (Deutsches Elektronen-Synchrotron DESY) James Good (Deutsches Elektronen-Synchrotron DESY) Uwe Grosse-Wortmann (Deutsches Elektronen-Synchrotron DESY) Marc Guetg (Deutsches Elektronen-Synchrotron DESY) Alexander Klemps (Hamburg University of Technology) Nick Kschuev (Deutsches Elektronen-Synchrotron DESY) Chen Li (Deutsches Elektronen-Synchrotron DESY) Tianyun Long (Deutsches Elektronen-Synchrotron DESY) Christian Mohr (Deutsches Elektronen-Synchrotron DESY) Harsha Panuganti (Deutsches Elektronen-Synchrotron DESY) Federico Pressacco (Deutsches Elektronen-Synchrotron DESY) Lucas Schaper (Deutsches Elektronen-Synchrotron DESY) Dr Sebastian Schulz (Deutsches Elektronen-Synchrotron DESY) Hamed Tavakol (Deutsches Elektronen-Synchrotron DESY) Sergey Tomin (Deutsches Elektronen-Synchrotron DESY) Caterina Vidoli (Deutsches Elektronen-Synchrotron DESY) Mathias Vogt (Deutsches Elektronen-Synchrotron DESY) Stuart Walker (Deutsches Elektronen-Synchrotron DESY) Lutz Winkelmann (Deutsches Elektronen-Synchrotron DESY) Jonathan Wood (Deutsches Elektronen-Synchrotron DESY) Henrik Tuennermann (Deutsches Elektronen-Synchrotron DESY) Ingmar Hartl (Deutsches Elektronen-Synchrotron DESY)

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