Temporal synchronization of GHz repetition rate electron and laser pulses for the optimization of a compact inverse-Compton scattering x-ray source

TL;DR

This paper presents a novel RF synchronization technique that aligns electron and laser pulses with picosecond precision, significantly improving the setup process for inverse-Compton x-ray sources.

Contribution

The paper introduces a new RF synchronization method that reduces timing uncertainty from 350 ps to under 2 ps for electron-laser pulse alignment.

Findings

Timing uncertainty reduced from 350 ps to <2 ps

Enhanced precision simplifies x-ray source commissioning

Demonstrated effective synchronization performance

Abstract

The operation of an inverse-Compton scattering source of x-rays or gamma-rays requires the precision alignment and synchronization of highly focused electron bunches and laser pulses at the collision point. The arrival times of electron and laser pulses must be synchronized with picosecond precision. We have developed an RF synchronization technique that reduces the initial timing uncertainty from 350 ps to less than 2 ps, greatly reducing the parameter space to be optimized while commissioning the x-ray source. We describe the technique and present measurements of its performance.