Sabrina Features

Imaging Model

Rendering of MCNP (and other surface) geometries by ray tracing
Either ray traced image or line drawings showing edges and intersections
Ray tracing uses the MCNP tracking code
- You see what MCNP sees
- Rendering speed is dependent on efficiency of geometry model description---If Sabrina struggles, so will MCNP
2-D plots by ray tracing
X Window screen display in Unix version
Windows graphics in PC version
Printing by PostScript files Unix) or
Device Independent Bitmap (Windows)
Saving of images as PostScript, Bitmap (Windows), and GIF (Unix).
Graphics adapts to color capability of display

Color and Transparency by material, cell, or density
User control of ViewPoint, zoom state, and colors
Variable light source position with shadows.
Up to 10 ViewPoints, Light Source Positions, and Spatial Windows (or bounding boxes) may be defined and retrieved
The ViewPoint can be rotated by a given Angle
Cutter bodies to expose interiors
Interactive Query and Zooming
User control of which way is Up

Sabrina reads and writes MCNP ptrac files
The output PTRAC file is Filtered and Pruned
Sabrina gives a summary of information contained in the ptrac file
Tracks can be filtered by intrinsic attributes such as particle type, energy, history number, criticality calculation cycle number, ...
Tracks may be restricted by Bounds on Coordinates, Energy, Weight, and Time.
Tracks interacting with a specific cell, material, etc. can be selected.
Source, interaction, and termination sites may be shown.
Tracks and/or event sites may be shown separately, with or without geometry.
Tracks can be colored by Energy, Particle Type, Weight, Time, or Number of Interactions. Energy, Weight, and Time coloring can use a continuous color shading coding.
Pruning eliminates Branches that are not part of a path to a specified cell or surface
A linear Transformation may be applied to the Tracks

Sabrina reads MCNP, ITS ACCEPT, Sabrina command, and MCNP ptrac files
Typed commands
Script files
Journal file written during Sabrina session may be read in as a script file
sabrina.ini Initialization File automatically saves user preferences and window sizes and positions
Windows version uses system registry instead of ini file
Unix version uses Resouces file for user preferences

Sabrina writes MCNP, ACCEPT, and Sabrina command files
Sabrina writes PostScript files containing both bitmap images (screen copy) and vector graphics (e.g. lines)
Unix version writes GIF files
Images are saved as Device Independent Bitmaps (Windows Sabrina) or
compressed image format (Unix)
Graphics can be sent directly to the printer

Comprehensive Windows Help package is included with Windows Sabrina
Context Sensitive Help in Windows Sabrina
Interactive help exists for all commands
Hypertext (HTML) help in Unix version uses Netscape Navigator
Sabrina User's Guide contains over 200 pages of detailed instructions in full color
Electronic PDF version of Sabrina User's Guide supplied with distribution.
Sabrina comes with an extensive set of examples

Coordinate axis display
Meshing and volume fraction calculation
Line drawing---edges and intersections---of solid body geometry with hidden line removal
Sabrina can play sounds at startup and termination, after completion of pictures, and on errors and warnings
Save and Restore of images (Unix)
X-ray simulation mode
Text Labels can be written over graphics
Color legend bar gives color coding scale

Sabrina has been Ported to most UNIX platforms with X Window graphics and to Personal Computers running Windows (95, 98, NT, 2000, ME, XP)
Sabrina is available from White Rock Science

Last modified: September, 2004