DPG Phi
Verhandlungen
Verhandlungen
DPG

Berlin 2024 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

AKBP: Arbeitskreis Beschleunigerphysik

AKBP 14: Light Sources and FEL’s

AKBP 14.2: Vortrag

Donnerstag, 21. März 2024, 16:30–16:45, E 020

Power Buildup in a Strongly-Tapered FEL Oscillator — •Margarit Asatrian1, Eugenio Ferrari2, Andrew Fisher3, Georgia Paraskaki2, Pietro Musumeci3, and Wolfgang Hillert11University of Hamburg, Hamburg, Germany — 2Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany — 3University of California at Los Angeles, Los Angeles, California, USA

Free-Electron Lasers (FELs) can deliver high-energy pulses at MHz repetition rates and wavelengths down to XUV – X-Ray regime by extracting a fraction of energy of ultrarelativistic electron bunches. This fraction, corresponding to the FEL efficiency, depends on the FEL setup and typically lies below 0.1%.

A promising scheme for its improvement – Tapering Enhanced Stimulated Superradiant Amplification (TESSA), proposes using a high-power seed laser pulse in combination with strongly-tapered undulators for extracting a significantly larger fraction of the energy from a pre-bunched beam. Since there is a lack of sufficiently powerful seed laser sources at shorter wavelengths, one can consider implementing the TESSA scheme in an FEL oscillator, so that the seed is generated and stored within the cavity.

We present a simulation study addressing the challenges of power buildup in such a strongly-tapered FEL oscillator. In particular, we look into the possibility of using fast control on the beam energy and the undulator phase shifters for accelerating the buildup process.

Keywords: FEL Oscillator; Tapering; High Efficiency; Phaseshifters; TESSA

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2024 > Berlin