Dosimetry study of high repetition rate MeV electron beam from a continuous-wave photocathode gun

TL;DR

This study investigates the dosimetry of a high repetition rate MeV electron beam from a continuous-wave photocathode gun, demonstrating precise dose control, uniform irradiation, and stable operation for potential advanced applications.

Contribution

It provides the first combined Monte Carlo simulation and experimental analysis of in-vacuum and in-air dosimetry for this specific high-brightness electron source.

Findings

Achieved high-dose uniform irradiation with flexible dose rate tuning

Demonstrated good stability and repeatability of doses

Showed ultra-wide tuning range and precise control of irradiation parameters

Abstract

DC-SRF-II gun, a high-brightness continuous-wave photocathode gun, has greater potential in electron beam irradiation applications. This paper presents the in-vacuum and in-air irradiation dosimetry study of the high repetition rate electron beam from the DC-SRF-II gun with both Monte Carlo simulations and experiments. Especially, high-dose uniform irradiations with flexible and accurate tuning of dose rate across orders of magnitude are demonstrated. Good stability and repeatability of the doses are also shown. The ultra-wide tuning range and precise control of irradiation time and dose rate are expected to pave the way for innovative applications across a wide range of fields.