FEL2024 - 41st International Free Electron Laser Conference

Method for measuring the transverse electron beam size with intensity interferometry at free-electron lasers

TUP100-THA

20 Aug 2024, 16:20

4h 40m

POLIN

Board: TUP100-THA

Poster Presentation Electron diagnostics, timing, synchronization & controls Poster session

Speaker

Andrei Trebushinin (European XFEL GmbH)

Description

We demonstrate the feasibility of measuring the spatial intensity correlation function of synchrotron radiation at free-electron laser facilities. For this technique, it is sufficient to use a synchrotron radiation imager paired with an undulator commissioning crystal monochromator at Bragg's angle. By measuring the transverse intensity correlation, we retrieved the electron beam size at the undulator cell where this radiation was emitted. We tested this technique at the hard X-ray SASE1 and SASE2 beamlines of the European XFEL.