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Basic Concepts of Polarisation Analysis for Neutron Chopper Spectrometer POLANO at J-PARC

2013; Physical Society of Japan; Volume: 82; Issue: Suppl.A Linguagem: Inglês

10.7566/jpsjs.82sa.sa036

1347-4073

Kenji Ohoyama, Tetsuya Yokoo, Shinichi Itoh, Jirô Suzuki, Kazuaki Iwasa, T. Sato, H. Kira, Yoshifumi Sakaguchi, Takashi Ino, Takayuki Oku, Keisuke Tomiyasu, Masami Matsuura, Haruhiro Hiraka, Masafumi Fujita, Hiroyuki Kimura, T. Sato, Jirô Suzuki, Hirohiko M. Shimizu, T. Arima, M. Takeda, K. Kaneko, M. Hino, S. Muto, H. Nojiri, Chang‐Hee Lee, Je‐Geun Park, S. Choi,

Advanced NMR Techniques and Applications

The basic concept underlying the use of neutron polarisers and analysers in a polarised neutron spectrometer which will be constructed in J-PARC/MLF is discussed. The spectrometer, named POLANO, is a compact chopper spectrometer for polarisation analysis in the energy region up to Ei ~200 meV. In the first stage of this project, a 3He spin filter polarised by the spin exchange optical pumping method will be used as the polariser. Based on the optimisations of the filter parameters, we confirm that the designed optimised 3He spin filters will be feasible for use up to 80 meV.