What is a beamstop?

Answer 1

A beamstop is any of several devices used in X-ray crystallography to avoid damage by X-rays.

Answer 2

A beamstop is a device used in scientific experiments, particularly in X-ray crystallography, to block or absorb excess radiation that could interfere with measurements or imaging. It is typically positioned in the path of the X-ray beam to prevent it from reaching certain areas of the detector or sample.