In-situ uniaxial pressure cell for X-ray and neutron scattering experiments

TL;DR

This paper introduces an in-situ uniaxial pressure device designed for small angle X-ray and neutron scattering experiments, capable of applying up to 200 N force with precise control at low temperatures and high magnetic fields.

Contribution

The paper presents a versatile, exchangeable uniaxial pressure device compatible with various instruments and cryostats, featuring continuous force monitoring and feedback control for precise experimental conditions.

Findings

Supports forces up to 200 N in both compression and tension

Compatible with multiple instruments and cryostats

Enables rapid sample changes and precise pressure control

Abstract

We present an in-situ uniaxial pressure device optimized for small angle X-ray and neutron scattering experiments at low-temperatures and high magnetic fields. A stepper motor generates force, which is transmitted to the sample via a rod with integrated transducer that continuously monitors the force. The device has been designed to generate forces up to 200 N in both compressive and tensile configurations and a feedback control allows operating the system in a continuous-pressure mode as the temperature is changed. The uniaxial pressure device can be used for various instruments and multiple cryostats through simple and exchangeable adapters. It is compatible with multiple sample holders, which can be easily changed depending on the sample properties and the desired experiment and allow rapid sample changes.