New Polarized Neutron Diffraction Setup for Precise High-Field Investigations of Magnetic Structures up to 8 T at MLZ

IEEE Transactions on Magnetics, vol. 58, pp. 1–5

Abstract

New actively shielded asymmetric vertical field split-coil superconducting magnet with maximal field of 8 T has been recently procured and implemented on the beam line POLI at Maier-Leibnitz Zentrum (MLZ). The magnet is designed in order to facilitate the single crystal diffraction with polarised neutrons. In order to provide high neutron polarisation in the vicinity of the new strong magnet a dedicated compact-size solid-state supermirror bender polariser optimised for the short neutron wavelength on POLI has been built. A Mezei flipper, which had been previously developed for lower field, could be upgraded with additional guide fields in order to be used in combination with new polarizer and magnet. All components are discussed and the performance test for the entire setup is presented. High efficiency of the new polarised neutron diffraction setup on POLI is demonstrated. Polarized neutron diffraction experiments in the fields up to 8 T are now available at MLZ.

Authors 12

1. Vladimir M. Hutanu Aachen Institute of Crystallography

   Forschungszentrum Jülich · Heinz Maier-Leibnitz Zentrum · RWTH Aachen University

   Affiliation as printed

   Institute of Crystallography RWTH Aachen University, D52066 Aachen, Germany and Jülich Centre for Neutron Science JCNS at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Julich GmbH, Germany. (e-mail: Vladimir.Hutanu@frm2.tum.de)

2. Henrik Thoma Aachen Institute of Crystallography

   Forschungszentrum Jülich · Heinz Maier-Leibnitz Zentrum · RWTH Aachen University

   Affiliation as printed

   Institute of Crystallography RWTH Aachen University, D52066 Aachen, Germany and Jülich Centre for Neutron Science JCNS at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Julich GmbH, Germany

3. Hao Deng Aachen Institute of Crystallography

   Forschungszentrum Jülich · Heinz Maier-Leibnitz Zentrum · RWTH Aachen University

   Affiliation as printed

   Institute of Crystallography RWTH Aachen University, D52066 Aachen, Germany and Jülich Centre for Neutron Science JCNS at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Julich GmbH, Germany

4. Georg Brandl

   Forschungszentrum Jülich · Heinz Maier-Leibnitz Zentrum

   Affiliation as printed

   Jülich Centre for Neutron Science JCNS at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Julich GmbH, Germany

5. Alexander Weber

   Forschungszentrum Jülich · Heinz Maier-Leibnitz Zentrum

   Affiliation as printed

   Jülich Centre for Neutron Science JCNS at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Julich GmbH, Germany

6. V. Yu. Rubanskyi

   Forschungszentrum Jülich · Heinz Maier-Leibnitz Zentrum

   Affiliation as printed

   Jülich Centre for Neutron Science JCNS at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Julich GmbH, Germany

7. Wolfgang Luberstetter Aachen Institute of Crystallography

   Forschungszentrum Jülich · Heinz Maier-Leibnitz Zentrum · RWTH Aachen University

   Affiliation as printed

   Institute of Crystallography RWTH Aachen University, D52066 Aachen, Germany and Jülich Centre for Neutron Science JCNS at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Julich GmbH, Germany

8. Thomas Krist
   Affiliation as printed

   NOB Nano Optics Berlin GmbH, Krumme Str. 64, D10627 Berlin, Germany

9. Georg Roth Aachen Institute of Crystallography

   RWTH Aachen University

   Affiliation as printed

   Institute of Crystallography RWTH Aachen University, D52066 Aachen, Germany

10. Lars Peters Aachen Institute of Crystallography

    RWTH Aachen University

    Affiliation as printed

    Institute of Crystallography RWTH Aachen University, D52066 Aachen, Germany

11. Thomas Brückel

    Forschungszentrum Jülich

    Affiliation as printed

    Juelich Centre for Neutron Science JCNS and Peter Gruenberg Institut PGI JCNS-2 & PGI-4, Forschungszentrum Juelich GmbH, Jülich, Germany

12. Stefan Mattauch

    Forschungszentrum Jülich · Heinz Maier-Leibnitz Zentrum

    Affiliation as printed

    Jülich Centre for Neutron Science JCNS at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Julich GmbH, Germany