A {\mu}-TPC detector for the characterization of low energy neutron fields

TL;DR

This paper presents a micro Time Projection Chamber (μ-TPC) detector designed to accurately characterize low energy neutron fields, enabling primary measurement standards for neutron fluence and energy distribution from 8 keV to 1 MeV.

Contribution

The development and simulation of a μ-TPC detector capable of 3D recoil nucleus reconstruction for neutron field measurement in the specified energy range.

Findings

Simulations demonstrate the detector's ability to determine neutron energy and fluence.

The μ-TPC provides ionization energy measurement and 3D recoil tracking.

Potential to serve as a primary standard for neutron field characterization.

Abstract

The AMANDE facility produces monoenergetic neutron fields from 2 keV to 20 MeV for metrological purposes. To be considered as a reference facility, fluence and energy distributions of neutron fields have to be determined by primary measurement standards. For this purpose, a micro Time Projection Chamber is being developed to be dedicated to measure neutron fields with energy ranging from 8 keV up to 1 MeV. In this work we present simulations showing that such a detector, which allows the measurement of the ionization energy and the 3D reconstruction of the recoil nucleus, provides the determination of neutron energy and fluence of these neutron fields.