LineVISAR. A fringe-trace data analysis program

Technical Report · Sat Feb 01 00:00:00 EST 2014

DOI:https://doi.org/10.2172/1204102· OSTI ID:1204102

Furnish, Michael D. ^[1]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

The line-imaging ORVIS or VISAR provides velocity as a function of position and time for a line on an experimental setup via a streak camera record of interference fringes. This document describes a Matlab-based program which guides the user through the process of converting these fringe data to a velocity surface. The data reduction is of the "fringe trace" type, wherein the changes in velocity at a given position on the line are calculated based on fringe motion past that point. The analyst must establish the fringe behavior up front, aided by peak-finding routines in the program. However, the later work of using fringe jumps to compensate for phase problems in other analysis techniques is greatly reduced. This program is not a standard GUI construction, and is prescriptive. At various points it saves the progress, allowing later restarts from those points.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1204102
• Report Number(s): SAND2014-1632; 504879
• Country of Publication: United States
• Language: English