Neutrons Sciences Directorate at ORNL

Specifications of the VULCAN Instrument

Selectable chopper speed and bandwidth: 60 Hz, 1.44 Å; 30 Hz, 2.88 Å; 20 Hz, 4.32 Å
Sample stage: Rotation: 360°, X,Y, +/-250 mm, Z +/-300 mm. Weight capacity: 2000 kg. Positional precision: < 25 μm for loads < 200 kg; 100 μm for loads between 200 and 2,000 kg
Detector: +/-90 position-sensitive detectors (3 modules each side), measures two strain components simultaneously
High-intensity and high-resolution exchangeable guides: ~0.45% (HI) and ~0.25% (HR) Δ-d/d resolution
Beam size: 2 ~17 mm horizontal and 0.2 ~17 mm vertical incident slit. 2 mm and 5 mm receiving radial collimators
Various sample environments enable in situ diffraction measurement (see sample environment page for details)