Strategy and guidelines for the calibration of the ITER radial neutron camera

TL;DR

This paper proposes a calibration strategy for the ITER Radial Neutron Camera that uses embedded sources, reference pulses, and cross-calibration with other systems, avoiding the need for in-vessel external neutron sources.

Contribution

It introduces a novel calibration procedure for ITER RNC that combines embedded sources, reference pulses, and cross-calibration with existing systems, validated through Monte Carlo simulations.

Findings

Calibration method eliminates need for in-vessel external sources

Validation achieved via Monte Carlo radiation transport simulations

Method ensures accurate RNC calibration throughout ITER lifetime

Abstract

A calibration procedure is proposed for the ITER Radial Neutron Camera. No in-vessel calibration using external neutron sources is required: instead, it is proposed to rely on embedded sources, reference ITER pulses and cross-calibration with ITER fission chambers and activation system coupled to Monte Carlo simulations of radiation transport for the validation of the RNC calibration and for its tracking during ITER lifetime.