Correcting aberrations of a transverse-field neutron resonance spin echo instrument
Journal Article
·
· Review of Scientific Instruments
- Indiana Univ., Bloomington, IN (United States)
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Rutherford Appleton Lab., ISIS Neutron Source
- Indiana Univ., Bloomington, IN (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Neutron resonance spin echo (NRSE) technique has the potential to increase the Fourier time and energy resolution in neutron scattering by using radio frequency (rf) neutron spin-flippers. However, aberrations arising from variations in the neutron path length between the rf flippers reduce the polarization. Here, we develop and test a transverse static-field magnet, a series of which are placed between the rf flippers, to correct for these aberrations. The prototype correction magnet was both simulated in an NRSE beamline using McStas, a Monte Carlo neutron ray-tracing software package, and measured using neutrons. The results from the prototype demonstrate that this static-field design corrects for transverse-field NRSE aberrations.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- U.S. Department of Commerce; USDOE Office of Science (SC)
- Grant/Contract Number:
- AC05-00OR22725; SC0018453; SC0021482
- OSTI ID:
- 2573667
- Journal Information:
- Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 3 Vol. 94; ISSN 1089-7623; ISSN 0034-6748
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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