Researchers at NIST have developed a new cryogenic goniometer system for neutron scattering experiments that allows real-time sample alignment and maintains low temperatures and magnetic fields. The system, called CHRNS, enables unprecedented experimental flexibility and efficiency by placing the goniometer inside the sample environment.
Key features of the new system include:
– Horizontal rotation axis for sample alignment
– Operation at temperatures as low as 10mK and under 20T magnetic fields
– Improved temperature control between sample and cryostat
– Vertical axis sample rotator for higher precision and efficiency
– Small angle cryogenic goniometer for horizontal plane alignment
The new system will allow easy adjustment of sample tilt and scattering plane switch for single crystal samples, enabling quick access to a large range of momentum-space for studying quantum magnetism, superconductivity, and other condensed matter physics phenomena.
Over the coming year, researchers will continue improving thermalization methods, expanding available cryostats and magnets, and developing software for seamless operation within neutron experiments.
Source: https://www.nist.gov/ncnr/facilities-upgrades-during-unplanned-outage/chrns-cryogenic-goniometer
Keywords: Neutron, Scattering, Goniometer, Cryostat, Magnetism
