Print Email Facebook Twitter Design and characterization of zero magnetic field chambers for high efficiency neutron polarization transport Title Design and characterization of zero magnetic field chambers for high efficiency neutron polarization transport Author Dadisman, Ryan (Oak Ridge National Laboratory) Shen, Jiazhou (Indiana University - Purdue University) Feng, Hao (Indiana University - Purdue University) Crow, Lowell (Oak Ridge National Laboratory) Jiang, Chenyang (Oak Ridge National Laboratory) Wang, Tianhao (Oak Ridge National Laboratory) Zhang, Yuxuan (Oak Ridge National Laboratory) Bilheux, Hassina (Oak Ridge National Laboratory) Parnell, S.R. (TU Delft RID/TS/Instrumenten groep) Date 2019 Abstract Several methods of polarized neutron scattering call for a zero magnetic field (ZF) region to reduce magnetic field integral aberrations while preserving the neutron polarization. Though the design for large angle neutron scattering has been presented in various places, the design characterization and tuning has not been discussed before. In this report, the tuning procedure will be discussed with both neutron polarization transport method and utilization of fluxgate magnetometers. As a tuning procedure, polarized neutrons are sensitive to any local field distortions along all trajectories within the beam, but the process is slow. With fluxgates, the entire beam region cannot be accessed simultaneously, but very fast and precise measurements can be made in accessible regions of interest. Consequently, we would like to benchmark the usage of fluxgates as a fast tuning probe compared with polarization measurements made with neutrons. Polarization transport results for tuned ZF chambers, up to 2.25 m in length, are presented. Subject Large-angle neutron scatteringLarmor labelingMagnetic Wollaston prismsPolarization transportSmall-angle neutron scatteringZero magnetic field To reference this document use: http://resolver.tudelft.nl/uuid:6ac32251-bf6d-4261-b70e-2b3f23b285a8 DOI https://doi.org/10.1016/j.nima.2019.05.092 Embargo date 2021-06-18 ISSN 0168-9002 Source Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 940, 174-180 Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2019 Ryan Dadisman, Jiazhou Shen, Hao Feng, Lowell Crow, Chenyang Jiang, Tianhao Wang, Yuxuan Zhang, Hassina Bilheux, S.R. Parnell, More Authors Files PDF nima62251_2_c.pdf 3.39 MB Close viewer /islandora/object/uuid:6ac32251-bf6d-4261-b70e-2b3f23b285a8/datastream/OBJ/view