BL14 AMATERAS Cold-Neutron Disk-Chopper Spectrometer
Disk-chopper type neutron spectrometer for studying dynamical properties in atomic, molecular and magnetic systems in the energy range from cold to sub-thermal neutron regions with high efficiency and fine resolution.
|Research Objectives||Diffusion of atoms, ions and molecules in liquids, polymers, biomaterials etc., local and collective excitations and fluctuations of lattice and spins.|
|Features||By using recently developed techniques such as the pulse-shaping technology and the multi-Ei measurement, AMATERAS carries out quasielastic and inelastic neutron scattering measurements with high efficiency and fine and flexible energy resolution in cold and sub-thermal neutron regions.|
Last Update: 2018-05-02
|Instrument||Cold-neutron disk-chopper spectrometer (AMATERAS)|
|Overview of instrument||Inelastic scattering spectrometer for detecting dynamical properties in atomic, molecular and magnetic systems in a relatively low-energy range with high resolution|
|Moderator||Coupled hydrogen moderator|
|Incident neutron energy||1 < Ei < 80 meV|
|Detection angle||Horizontal: 3.4 deg. - 116 deg.|
Vertical: -16 deg. - 23 deg.
|Resolution (ΔE/Ei)||~1% (minimum) at Ei < 3meV|
~2-3% (minimum) at Ei < 20meV
~4-5% ( minimum) at Ei < 80meV.
|Neutron intensity (@sample position @1MW)||3 ×104 n/s/cm2 (@ Ei = 20 meV, ΔE/Ei = 1 %) (expected)|
|Sample size and/or volume||Optimal dimensions for beam are 1φ×2 cm|
|Ancillary equipment and sample environment||Bottom-loading closed cycle refrigerator (5-300 K)|
Top-loading closed cycle refrigerator (7-300 K)
High-temperature stick (T < 500 K)
Other BL-common equipment is also available.*1 (On AMATERAS, some of equiments can not be used at their full-spec. Please contact BL14 staff members for more detailes.)
|Contact||Kenji NAKAJIMA (J-PARC Center, JAEA)|
|Secondary contact||Seiko OHIRA-KAWAMURA (J-PARC Center, JAEA)|
|Maiko KOFU (J-PARC Center, JAEA)|
|Tatsuya KIKUCHI (J-PARC Center, JAEA/Research & Development HQ., Sumitomo RubberIndustries, Ltd.)|