IPAC'23 - 14th International Particle Accelerator Conference

Feasibility study of a hard x-ray FEL oscillator at 3 GeV based on harmonic lasing and transverse gradient undulator

TUPL005

9 May 2023, 16:30

2h

Sala Laguna

Poster Presentation MC2.A06: Free Electron Lasers Tuesday Poster Session

Speaker

Xi Yang (Brookhaven National Laboratory)

Description

We study the feasibility for a hard x-ray FEL oscillator (XFELO) at 3 GeV based on harmonic lasing and transverse gradient undulator (TGU) with strong focusing. We carry out optimization of parameters using the formula developed in 2021 [1] for harmonic lasing XFELO with TGU and strong focusing. From previously assumed x-ray cavity loss of 30-20%, we lowered the assumed cavity loss to 5% (which includs an assumed 1% output coupling). This significantly reduced the required single pass gain to 5%, hence the renewed optimization relaxed the very stringent requirment on the electron beam parameters. After the optimization by analytical formula we confirm the single pass gain using simulation by “GENESIS” code.

[1] L.H. Yu, Gain of Hard X-ray FEL at 3 GeV and Required Parameters, in Proc. of IPAC-2021, MOPAB040.

Funding Agency

DOE