Abstract
Construction of the newly developed polarization analysis neutron chopper spectrometer (POLANO) commenced in the Japan Proton Accelerator Research Complex (J-PARC), Materials and Life Science Experimental Facility (MLF). The POLANO is a direct geometry chopper spectrometer with neutron polarization analysis capability. In the suite of inelastic spectrometers, six instruments are now in operation. POLANO will be the only spectrometer dedicated to polarization analysis experiments. The primary phase of the construction will be completed by 2014 with beam commissioning scheduled for 2015.
Highlights
The polarized neutron technique has been developed and used for many years, the application of the time-of-flight (TOF) method has only been realized in recent years
Since polarization analysis neutron chopper spectrometer (POLANO) is aimed at the incident neutron energy range up to Ei = 100 meV, the evaluated intensity and resolution below 100 meV are reasonable for the polarization analysis experiments
We have developed several types of choppers originally for the high resolution chopper spectrometer HRC in the Materials and Life Science Experimental Facility (MLF) [8, 9]
Summary
The polarized neutron technique has been developed and used for many years, the application of the time-of-flight (TOF) method has only been realized in recent years. With regard to the inelastic spectrometer, the polarized neutron technique finds limited practical use in wide scattering angle instruments. In the light of recent discoveries in material science, many of the observed complex phenomena are largely due to the entangled physical degrees of freedom of spins, charges, orbitals, and even lattice vibration. The polarization analysis neutron spectrometer POLANO enables polarization analysis of inelastic scattering experiments to investigate the dynamical properties of the above mentioned multiple degrees of freedom. In the Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex (J-PARC), there is a plan to apply the polarization technique to the instruments as small angle scattering, reflectometer, imaging instruments, and so on. POLANO will be the direct geometry chopper spectrometer and the only instrument with polarization analysis capability
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