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Updated: Jan 20, 2026

Optimization of Crystal Growth for Neutron Macromolecular Crystallography

Optimization of Crystal Growth for Neutron Macromolecular Crystallography

Published on: March 13, 2021

Seismic noise in crystal neutron interferometry.

G Mana¹, E Massa¹

¹INRIM - Istituto Nazionale di Ricerca Metrologica Strada delle Cacce 91 10135Torino Italy.

Journal of Applied Crystallography

|January 19, 2026

Summary

We estimate phase noise in a split-crystal interferometer using simultaneous X-rays and neutrons. Passive isolation reduces seismic and acoustic noise, crucial for sensitive neutron interferometry experiments.

Keywords:

interference fringes interference visibility neutron interferometry phase noise seismic noise split-crystal interferometry

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Last Updated: Jan 20, 2026

Optimization of Crystal Growth for Neutron Macromolecular Crystallography

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Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor

Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor

Published on: May 7, 2021

Area of Science:

Physics
Materials Science
Instrumentation

Background:

Neutron interferometers are highly sensitive to environmental noise, including seismic and acoustic vibrations.
The low speed, flux, and long detection times of thermal neutrons exacerbate this sensitivity.
Split-crystal designs and extended interferometer arms further increase susceptibility to noise.

Purpose of the Study:

To estimate the root-mean-square phase noise in a split-crystal interferometer.
To assess the impact of passive isolation on noise reduction for simultaneous X-ray and neutron interferometry.
To provide foundational data for the design and operation of advanced interferometers.

Main Methods:

Developing a theoretical model for phase noise estimation.
Simulating noise contributions from seismic and acoustic sources.
Analyzing the effects of passive isolation techniques on interferometer performance.

Main Results:

Quantified the root-mean-square phase noise under passive isolation conditions.
Demonstrated the effectiveness of passive isolation in mitigating environmental noise.
Provided a quantitative basis for understanding noise limitations in dual-modality interferometry.

Conclusions:

Passive isolation is essential for minimizing phase noise in sensitive neutron interferometers.
The presented noise estimates support the design and operational stability of split-crystal interferometers.
This work contributes to advancing high-precision measurements using simultaneous X-ray and neutron interferometry.