Implementation of a new Cryopad on the diffractometer POLI at MLZ

V Hutanu; W Luberstetter; E Bourgeat-Lami; M Meven; A Sazonov; A Steffen; G Heger; G Roth; E Lelièvre-Berna

doi:10.1063/1.4963697

Implementation of a new Cryopad on the diffractometer POLI at MLZ

Rev Sci Instrum. 2016 Oct;87(10):105108. doi: 10.1063/1.4963697.

Authors

V Hutanu¹, W Luberstetter¹, E Bourgeat-Lami², M Meven¹, A Sazonov¹, A Steffen³, G Heger¹, G Roth¹, E Lelièvre-Berna²

Affiliations

¹ Institut für Kristallographie RWTH Aachen University, Jägerstr. 17-19, 52056 Aachen, Germany.
² Institut Laue-Langevin, 71 Avenue des Martyrs, 38042 Grenoble Cedex 9, France.
³ Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstr. 1, 85747 Garching, Germany.

PMID: 27802694
DOI: 10.1063/1.4963697

Abstract

A new polarized neutron single crystal diffractometer POLI (Polarization Investigator) has been developed at the Maier-Leibnitz Zentrum, Garching, Germany. After reviewing existing devices, spherical neutron polarimetry has been implemented on POLI as a main experimental technique using a third-generation cryogenic polarization analysis device (Cryopad) built in cooperation between RWTH University and Institut Laue-Langevin. In this report we describe the realization and present the performance of the new Cryopad on POLI. Some improvements in the construction as well as details regarding calibrations of Cryopad and its practical use are discussed. The reliable operation of the new Cryopad on POLI is also demonstrated.