Contacts
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Instrument Scientist
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Instrument Scientist
Illuminating excitations in condensed matter systems to enhance the fundamental understanding of dynamic processes in materials.
ARCS is optimized to provide a high neutron flux at the sample and a large solid angle of detector coverage. The spectrometer is capable of selecting incident energies from a wide range, making it useful for studies of excitations from a few to several hundred milli-electron volts. An elliptically shaped supermirror guide in the incident flight path boosts the performance at the lower end of this range. The sample and detector vacuum chambers provide a window-free final flight path and incorporate a large gate valve to allow rapid sample changeout. A T0 neutron chopper not only blocks the prompt radiation from the source but also eliminates unwanted neutrons from the incident beam line. An oscillating radial collimator can reduce the background from complex sample environment equipment.
The increased sensitivity of ARCS offers new opportunities for scientific studies in:
Lattice Dynamics
Magnetic Dynamics
Chemical Physics
Inelastic neutron scattering studies such as those conducted at ARCS can impact the development of important practical materials, such as ferroelectrics used in ultrasounds and thermoelectrics used to harvest energy from waste heat.
Moderator | decoupled ambient water |
Source – Fermi chopper distance | 11.6 m |
Chopper – sample distance | 2.0 m |
Sample – detector distance | 3.0 m – 3.4 m cylindrical geometry |
Incident energy range | 10 – 1500 meV |
Resolution (elastic) | 3 – 5% Ei |
Detector coverage horizontal | -28° – 135° |
Detector coverage vertical | -27° – 26° |
Minimum detector angle | 3° |
Beam Size | 5 cm x 5 cm, with fully adjustable motorized slits in the horizontal and vertical directions |
Commonly used and well–characterized sample environment equipment List
Instrument Scientist
Instrument Scientist