SwissNeutronics’ Heusler monochromator system features individually controlled magnetic yokes for uniform fields over 1.4 kG, achieving neutron polarization above 94%. It offers high angular precision, motorized alignment via goniometer stages, and modular design with integrated shielding and guide fields—ideal for customizable, high-performance neutron scattering experiments.
SwissNeutronics has developed a high-precision mechanism for focusing Heusler monochromators and analysers, optimized for neutron polarization applications. The system features individually controlled magnetic yokes for each crystal row or column, ensuring a homogeneous magnetic field distribution exceeding 1.4 kG. This design enables exceptional crystal magnetization and neutron polarization levels above 94%. The spatial arrangement of Heusler crystals is carefully optimized using rocking curve analyses and crystal size variations to enhance resolution and efficiency.
The focusing mechanism is equipped with stepper motors, encoders or resolvers, and limit switches for reliable and repeatable positioning. The system achieves angular accuracy better than 0.05° RMS and repeatability within ±0.02°, ensuring consistent performance. Additional features include integrated guide fields and neutron shielding elements to minimize background interference. The modular design allows for easy customization and maintenance, making it adaptable to various experimental setups. Overall, this advanced focusing system combines strong magnetic performance, precise mechanical control, and flexible configuration options to meet the demanding requirements of modern neutron scattering experiments.
Technical highlights
- High Angular Precision
– Absolute accuracy: < 0.05° (RMS)
– Repeatability: < ±0.02° - Excellent Magnetic Performance
– Magnetic field strength: > 1.4 kG
– Measured neutron polarization: P > 94% - Advanced Mechanical Integration
– Fully motorized: stepper motor, encoder/resolver, home and limit switches
– Integrated goniometer stage for precise alignment - Optimized Magnetic Design
– Individual magnetic yokes for each crystal row or column
– Compact and efficient yoke geometry for homogeneous field distribution - Additional Functional Features
– Integrated guide field
– Neutron shielding elements
– Modular design for easy customization and maintenance
HFIR
1d focusing Heusler monochromator
FLEX @ HZB
1d focusing Heusler monochromator
