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Disk-Chopper Time-of-Flight Spectrometer

Disk-Chopper Time-of-Flight SpectrometerDC-TOF Disk Chopper Time-of-Flight Spectrometer
  • The Disk-Chopper Time-of-Flight Spectrometer (DC-TOF) turns an incident neutron beam into monochromatic pulses by using a disk-chopper. A neutron beam incident on a sample can choose its wavelength and resolution, on its own accord, within the range of 2-10Å. As such, it is possible to measure dynamics in a wide range of momentum at once by using multiple one-dimensional position-sensitive detectors, so this instrument is useful in measuring the dynamics of a variety of materials including not only magnetic materials but soft matters, polymers, biomolecules, and so on.
Contact information
  • Jiyong SoPrincipal researcherNeutron Science Division
    +82-42-868-8688

Specification for Tank and Chopper

Specification for Tank and Chopper - Detector Tank, Disk Chopper (from AIR-BUS)
Detector Tank Disk Chopper (from AIR-BUS)
  • Sample-Detector distance : 2.5m
  • Position Sensitive detector
    • ϕ25, 2m long
    • 57 PSDs are installed
  • Maximum rotation Speed: 20,000rpm
  • Chopper Configuration : 6 Disks(2 double choppers + 2 single chopper)

Sample Environment and Guide

CCR

  • Temperature Range :4K ~ 450K

Focusing Guide(KAERI)

  • Elliptical shape focusing
  • Cross-section : 30 x 145 → 22 x 55mm2
  • M-value : 2(upgrade is necessary)

Applications

  • Magnetic excitation, phonon density of states, atomic diffusion, thermo electric materials, piezoelectric materials
  • Molecular dynamics, Hydrogen-bonding and storage, Catalytic materials, Cement
  • Hydration process, protein dynamics