Main Features

A more detailed section specifies changes in recent releases of DAVE.
Also, visit the screenshots section to see DAVE in action.

Reduction

Visualization

Data reduction support for following NCNR/PSI instruments:
  • Triple Axis spectrometers: SPINS, BT2, BT7 and BT9
  • Filter Analyzer: FANS
  • TOF chopper spectrometers: FCS, DCS
  • Back Scattering spectrometers: HFBS
  • Spin Echo spectrometers: NSE
  • FOCUS and MARS spectrometers at PSI, Switzerland
  •  
  • Can also read in ASCII data
Modules are available which provide:
  • User configurable multi-line/symbol plots
  • User configurable area (contour, image) and surface plots
  • Ability to rebin, scale, and shift individual datasets
  • Make 1D slices/cuts of 2D data
  • Merge/combine multiple 1D/2D datasets into a single 2D dataset
  • Print or generate hardcopy output in postscript and other image (jpeg/png/bmp/tiff) formats

Analysis

Other

The following data analysis tasks can be performed:
  • General-purpose least-squares fitting of 1D/2D data using 1D model functions
  • General-purpose least-squares fitting of 2D data using 2D model functions
  • A large selection of model functions (1D and 2D) are included
  • Possible to specify user-defined functions (1D only)
  • Ability to include instrumental resolution function in the model functions
  • Fitted parameters and results can be analyzed and saved as ASCII data and/or hardcopy plots
Numerous modules underneath the Planning and Tools menu:
  • Neutron cross sections table for all elements and isotopes
  • Tool for calculating neutron cross section for any arbitrary compound/molecule
  • Instrument specific tools useful for experiment planning
  • Data tools for examining raw/dave files
  • Utility to calculate neutron vibrational lineshape from a Gaussian 98 logfile
  • Spurion calculator for determining the location of spurious inelastic peaks for Triple Axis spectrometers
  • Eigenvalue and hindered rotational dynamics calculator for molecular rotors (hydrogen, methyl systems)
  • Self-shielding corrections calculator
  • Digitizer for extracting data points from a plot or image