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Report No.

Advances in polarized neutron scattering experiments on TAS-1 at JRR-3

Takeda, Masayasu  ; Nakamura, Mitsutaka   ; Shimojo, Yutaka; Kakurai, Kazuhisa; Leli$`e$vre-Berna, E.*; Tasset, F.*; Regnault, L. P.*

The status of the polarized neutron options on TAS-1 is reported. TAS-1 is a thermal neutron triple-axis spectrometer installed at JRR-3 of JAEA and has been operational since 1991. Following the recent advances in the polarization analysis technique an upgrading program of polarized neutron options for TAS-1 was started five years ago. In this program new doubly-focusing-polarizing Heusler monochromator and analyzer were introduced to TAS-1. In addition, one of three third-generation CRYOPAD(CRYOgenic Polarization Analysis Device)s which were assembled for ILL(D3), CEA-Grenoble(IN22) and JAEA was installed on TAS-1 to enable the spherical polarization analysis. Using the increased polarized neutron flux elastic and inelastic polarized neutron scattering experiments with the conventional setup for the one-dimensional polarization analysis and with CRYOPAD for the three-dimensional polarization analysis are now routinely performed on TAS-1.



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