# The Multi-Blade Boron-10-based Neutron Detector for high intensity Neutron Reflectometry at ESS

## TL;DR

The paper presents the design, development, and testing of the Multi-Blade Boron-10 neutron detector, optimized for high-rate neutron reflectometry at the European Spallation Source, demonstrating improved performance over previous prototypes.

## Contribution

It introduces an improved Multi-Blade Boron-10 detector specifically designed for high-intensity neutron reflectometry at ESS, with successful testing results.

## Key findings

- Successfully tested at BNC and STF facilities
- Demonstrated capability to handle high instantaneous counting rates
- Showed improved spatial resolution and efficiency

## Abstract

The Multi-Blade is a Boron-10-based gaseous detector introduced to face the challenge arising in neutron reflectometry at pulsed neutron sources. Neutron reflectometers are the most challenging instruments in terms of instantaneous counting rate and spatial resolution. This detector has been designed to cope with the requirements set for the reflectometers at the upcoming European Spallation Source (ESS) in Sweden. Based on previous results obtained at the Institut Laue-Langevin (ILL) in France, an improved demonstrator has been built at ESS and tested at the Budapest Neutron Centre (BNC) in Hungary and at the Source Testing Facility (STF) at the Lund University in Sweden. A detailed description of the detector and the results of the tests are discussed in this manuscript.