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Virtual tour

IN5 - Disk chopper time-of-flight spectrometer

Instrument 3D layout (picture 2)

A cut of IN5B in a vertical plane along the beam axis

(1) Main access gate
(2) Choppers radiological protection
(3) Monochromator choppers
(4) Frame overlap and contaminant order choppers 
(5) Focusing guide
(6) Sample environment lift
(7) Sample chamber
(8) Position sensitive detectors
(9) Background shielding
(10) Background shielding frame
(11) Time-of-flight chamber
(12) Instrument recess

Note that the instrument is non-magnetic and has large sample chamber.

Disk chopper time-of-flight spectrometer

IN5B is a high precision direct geometry Time-of-flight (ToF) spectrometer. It is used to study low-energy transfer processes as a function of momentum transfer.

Typically this instrument is used for measurements in the small energy and momentum transfer region with values of about 1 % for the energy resolution (e.g. quasi-elastic scattering in solids, liquids, molecular crystals and inelastic scattering with small energy transfers in the range 10 µeV - 100 meV).

Applications

  • Local and long-range diffusion in disordered systems such as liquids, molecular crystals, amorphous solids (superionic glasses, orientational glasses, spin glasses), polymers, hydrogen-metal systems, ionic conductors
  • Dynamics of ’soft matter’, including gels, proteins and biological membranes
  • Dynamics of quantum liquids
  • Rotational tunnelling in molecular crystals
  • Crystal field splitting
  • Spin dynamics in high-TC superconductors
  • Critical scattering phenomena in dense gases and solids