Single Shot Transverse Emittance Measurement of multi-MeV Electron Beams Using a Long Pepper-Pot

TL;DR

This paper introduces a novel pepper-pot design for measuring the transverse emittance of high-energy electron beams, including analytical and simulation analyses to optimize accuracy for beams of several hundred MeV and above.

Contribution

The paper presents a new pepper-pot design with analytical and simulation validation for high-energy electron beam emittance measurement.

Findings

Analytical expressions for penetration effects in thick pepper-pots.

GEANT4 simulations validating the design's effectiveness.

Feasibility of measuring multi-MeV electron beam emittance.

Abstract

We present a pepper-pot design in which we address the problem of penetration by high energy particle, deriving analytical expressions and performing GEANT4 simulations for the estimation of the error introduced by a long (thick) pepper-pot. We also show that a careful design allows to measure the emittance of electron beam of several hundred MeV and beyond.