SNAPIN--Preparing the Input to SNAP

SNAP reads a single file, SNAP.DAT, which contains all of the necessary input data, including:

• the measured plasma profiles,
• the scalar values (I_p, B_t, R₀, a,...),
• the various analysis switches which control what sort of analysis SNAP will perform.

The recommended way to set up a SNAP.DAT file is with the program SNAPIN. Given a shot number and analysis time, SNAPIN reads diagnostic data from various UFILES and waveforms and writes a file that SNAP can read. SNAPIN allows you to set most SNAP\ variables. In addition, SNAPIN does some consistency checking to help avoid conflicting parameter settings. SNAPIN was written by Jane Murphy and is maintained by Tom Gibney.

There are a small number of obscure variables in the SNAP.DAT file which SNAPIN does not yet give you the option to modify. If you want to change the value of any of these variables, you can edit the file. This should not be necessary for routine operation. The SNAP.DAT file is in namelist format, which means that it is an ASCII file that can be edited with any text editor.

 
• How to Run SNAPIN
• Read a SNAP Input File
• Select the Shot and Time of Analysis
• Set the Physics Controls
• Select the Ti Model
• Get the Magnetics Data
• Select the Diagnostic Profiles
  • The Profile Menus
  • Graphical Editing of Diagnostic Profiles
  • Comments on Editing Diagnostic Profiles
  • Smoothing Diagnostic Profiles
  • Deglitching Diagnostic Profiles
  • Mapping Diagnostic Profiles
  • Density Normalization
  • The Radiated Power Profile
• Get Beam Data
• Get the RF Data
• Get the Impurities Data
  • Getting a Z-Effective Profile
• Enter Comments
• Write a SNAP Input File
• AUTOSNAP