Neutrons Sciences Directorate at ORNL

Specifications of the PTAX Instrument

Beam Spectrum: Thermal
Monochromators Unpolarized PG(002)
  Polarized (commissioning)
Analyzers Unpolarized PG(002), Be(101), Be(002), Si(111)
  Horizontally Focused PG(002),
Monochromator angle: 2Θ = 14 – 75°
Sample angle: +/- 180°
Scattering angle: -90 – 120°
Analyzer angle: -40 – 140°
Collimations (FWHM ): Premonochromator: 15', 30', 48'
Monochromator-sample: 20', 40', 60', 80'
Sample-analyzer: 20', 40', 60', 80'
Analyzer-detector: 20', 70', 90', 120', 210', 240'