Performance of High-Intensity Electron Linacs as Drivers for Compact Neutron Sources

TL;DR

This paper evaluates the performance of compact high-energy electron linacs as efficient, space-saving drivers for neutron sources, demonstrating their potential for various scientific and industrial applications.

Contribution

It provides a simulation-based assessment of electron linacs from 20 to 500 MeV as neutron source drivers, including optimal target design and neutron yield analysis.

Findings

Neutron yields up to 1.5×10^{15} n/s achieved.

Energy consumption per neutron as low as 5.65×10^{-10} J/n.

Potential for compact, energy-efficient neutron sources.

Abstract

The demand for neutron production facilities is increasing, as the applications of neutron science are manifold. These applications drive the need for efficient and compact neutron sources. In this context, this paper explores the potential performance of normal-conducting compact electron linacs from 20 MeV to 500 MeV as drivers for neutron sources. Results from a G4BEAMLINE simulation study find optimum dimensions of a tungsten target and characterize the emitted neutron spectrum. Two electron linac are then evaluated as drivers of such target: HPCI, an X-band linac; and CTF3 drive beam linac, an S-band alternative. The simulation study shows neutron strength values up to $1.5\cdot 10^{15}$ n/s can be attained, as well as low energy consumed per neutron produced values up to $5.65 \cdot 10^{-10}$ J/n, suggesting these electron-based neutron sources may be a compact and energy-efficient solution for many research, industry and medical applications.