Experimental demonstration of a tomographic 5D phase-space reconstruction

TL;DR

This paper reports the first experimental demonstration of a novel 5D phase-space tomography method for electron beams, enabling detailed characterization of beam properties in particle accelerators.

Contribution

The paper introduces and experimentally validates a new 5D phase-space tomography technique for electron beams in accelerators.

Findings

Successfully reconstructed the 5D phase space of a GeV electron bunch.

Used the reconstructed phase space for simulations and emittance analysis.

Demonstrated the method's applicability at the DESY FLASHForward facility.

Abstract

Detailed knowledge of particle-beam properties is of great importance to understand and push the performance of existing and next-generation particle accelerators. We recently proposed a new phase-space tomography method to reconstruct the five-dimensional (5D) phase space, i.e., the charge density distribution in all three spatial directions and the two transverse momenta. Here, we present the first experimental demonstration of the method at the FLASHForward facility at DESY. This includes the reconstruction of the 5D phase-space distribution of a GeV-class electron bunch, the use of this measured phase space to create a particle distribution for simulations, and the extraction of the transverse 4D slice emittance.