Alcator C-Mod gas puff imaging (GPI) camera data 2009-11
These are images of a 6 cm x 6 cm region just below the outer midplane of Alcator C-Mod.
In the images, radially outward is to the right, upward is up in the machine.
The solid line is the separatrix and the dotted line is the limiter shadow.
These videos have a frame rate of about 400,000 frames/sec at 2 microsec/frame exposure.

This data was taken by Jim Terry and Stewart Zweben using a Phantom 710 camera.
The movies were made using IDL code /home/zweben/phantom/phantom710_mpeg10.pro.


ALL IMAGES ARE NORMALIZED TO TIME-AVERAGE OVER EACH MOVIE THE NORMALIZED COLOR SCALE IS BLACK=0.5, WHITE=1.5 IN ALL IMAGES

photo of turbulencephoto of turbulencephoto of turbulence



GPI video with titles (6 min - 700 MB mp4)

shorter GPI video highlights movie (2 min - 130 MB mp4)

shorter GPI video highlights movie (2 min - 180 MB avi)


Click here to link to C-Mod GPI database shot list (9/5/17)


Sample GPI movies from database are below (.mpg format)

All movies are 100 frames long (0.25 msec), except as noted

Ohmic shots:

1091216028 @ 1.450 sec B=5.2 T, I=1.0 MA
1091216030 @ 1.450 sec B=5.2 T, I=1.0 MA
1100120023 @ 0.800 sec B=3.6 T, I=0.9 MA
1100120032 @ 0.800 sec B=3.6 T, I=0.9 MA

1100716003 @ 1.300 sec B=5.4 T, I=0.8 MA
1100716008 @ 1.300 sec B=5.4 T, I=0.8 MA
1100721005 @ 1.300 sec B=5.4 T, I=0.8 MA
1100721010 @ 1.300 sec B=5.4 T, I=1.1 MA

1100721028 @ 1.300 sec B=5.4 T, I=1.1 MA
1100803023 @ 1.300 sec B=5.4 T, I=1.0 MA
1100811018 @ 1.250 sec B=7.9 T, I=1.2 MA
1110114011 @ 0.901 sec B=4.6 T, I=0.9 MA


RF shots
1100817020 @ 1.000 sec B=5.7 T, I=0.8 MA 1.2 MW
1100824008 @ 1.250 sec B=5.4 T, I=0.9 MA 1.3 MW
1110114010 @ 0.901 sec B=4.6 T, I=0.9 MA 1.4 MW
1110114014 @ 0.901 sec B=4.0 T, I=0.8 MA 1.0 MW

1110114025 @ 0.901 sec B=5.3 T, I=1.0 MA 1.8 MW
1100817020 @ 1.000 sec B=5.7 T, I=0.8 MA 1.2 MW
1110114034 @ 0.901 sec B=3.9 T, I=0.8 MA 1.6 MW
1110119025 @ 1.300 sec B=5.5 T, I=0.8 MA 2.0 MW
1110119026 @ 1.300 sec B=5.5 T, I=0.9 MA 2.0 MW