Papers
Topics
Authors
Recent
Gemini 2.5 Flash
Gemini 2.5 Flash
173 tokens/sec
GPT-4o
7 tokens/sec
Gemini 2.5 Pro Pro
46 tokens/sec
o3 Pro
4 tokens/sec
GPT-4.1 Pro
38 tokens/sec
DeepSeek R1 via Azure Pro
28 tokens/sec
2000 character limit reached

Development and application of a $^3$He Neutron Spin Filter at J-PARC (2005.14399v1)

Published 29 May 2020 in physics.ins-det

Abstract: We are developing a neutron polarizer with polarized $3$He gas, referred to as a $3$He spin filter, based on the Spin Exchange Optical Pumping (SEOP) for polarized neutron scattering experiments at Materials and Life Science Experimental Facility (MLF) of Japan Proton Accelerator Research Complex (J-PARC). A $3$He gas-filling station was constructed at J-PARC, and several $3$He cells with long spin relaxation times have been fabricated using the gas-filling station. A laboratory has been prepared in the MLF beam hall for polarizing $3$He cells, and compact pumping systems with laser powers of 30~W and 110~W, which can be installed onto a neutron beamline, have been developed. A $3$He polarization of 85% was achieved at a neutron beamline by using the pumping system with the 110~W laser. Recently, the first user experiment utilizing the $3$He spin filter was conducted, and there have been several more since then. The development and utilization of $3$He spin filters at MLF of J-PARC are reported.

Citations (24)

Summary

We haven't generated a summary for this paper yet.