Fast framing movies of TFTR plasma events
A fast framing camera (Kodak EM1012) running at up to 2000 frames per second is being used at TFTR to observe fast edge phenomena and disruptions. In these short clips, digital sequences have been turned into MPEG movies. For improved clarity, white/black has been inverted...... so darkness is represented by white. Sometimes you can see a camera gating artifact in the first digitizer strip across the top left corner of the image. The horizontal (vertical) resolution is 239 pixels, while the vertical (horizontal) resolution is either 192 pixels ("square" frame) or 96 pixels ("rectangular" frame).
You may want to consult the Plasma/Fusion glossary developed by Princeton Plasma Physics Laboratory.
If you need a viewer for the MPEG clips follow this link.
1997 Campaign
For clips obtained during the 1996 campaign click here.
Camera on periscope located on Bay P
Shot 103381:
Disruption at ~2.5 s registered in white visible light (plasma current: 1.6 MA). Clip shows 0.15 s of evolution: from 2.49 to 2.64 s. Observe the flying debris after the disruption. (1000 frames per second with 10 microseconds exposure of each frame.)
Shot 103513:
Disruption at ~3.1 s registered in D/alpha/ light (plasma current 1.3 MA). Clip shows 0.1 s of evolution: from 3.1 to 3.2 s. (1000 frames per second with 1 millisecond exposure of each frame.)
Shot 103560:
Disruption at ~3.1 s registered in D/alpha/ light (plasma current 1.6 MA). Clip shows 0.25 s of evolution: from 3.0 to 3.25 s. Observe how the plasma runs into trouble just before the disruption. (1000 frames per second with 1 millisecond exposure of each frame.)
Shot 103611:
Ohmic discharge registered in Li+ light (548.5 nm). Clip shows 0.17 s of evolution: from 3.43 to 3.6 s. Observe the DOLLOP lithium injection at a 30 Hz rate. (1000 frames per second with 1 millisecond exposure of each frame.)
Shot 103618:
Neutral beam heated discharge registered in Li+ light (548.5 nm). Clip shows 0.3 s of evolution: from 4.35 to 4.65 s. Observe the DOLLOP lithium injection at a 30 Hz rate. (1000 frames per second with 150 microseconds exposure of each frame.)
Shot 103626:
Discharge registered in Li+ light (548.5 nm). Clip shows 0.2 s of evolution during the ohmic phase of the discharge): from 2.15 to 2.35 s. Observe the DOLLOP lithium injection at the bottom of the torus at a 30 Hz rate.
Shot 103649:
Disruption at ~4.7 s registered in white visible light and with a narrow (20 deg.) field of view. Clip shows 0.15 s of evolution: from 4.6 to 4.75 s. Observe the precursor activity. (1000 frames per second with 30 microseconds exposure of each frame.)
Shot 103681:
NICE disruption at ~2.4 s registered in white visible light and with a narrow (20 deg.) field of view. Clip shows 0.5 s of evolution: from 2.2 to 2.7 s. Observe the precursor activity and the "horizontal" shower of debris after the disruption. (2000 frames per second with 30 microseconds exposure of each frame.) (Waveforms
)
Shot 103687:
Disruption at ~2.7 s registered in D/alpha/ light (plasma current 1.6 MA) and with a narrow (20 deg.) field of view. Clip shows 0.625 s of evolution: from 2.7 to 3.325 s. Observe the flying debris after the disruption. (2000 frames per second with 300 microseconds exposure of each frame.)
Shot 103712:
Discharge registered in white visible light. Clip shows 0.06 s of evolution: from 2.2 to 2.26 s. Observe the piece of tile that breaks loose from the bottom of the torus and moves poloidally breaking up in more pieces. (2000 frames per second with 30 microseconds exposure of each frame.)
Shot 103714:
Disruption at ~2.5 s registered in white visible light (plasma current 1.6 MA) and with a narrow (20 deg.) field of view. Clip shows 0.337 s of evolution: from 2.5 to 2.837 s. Observe the precursor activity and the flying debris after the disruption. At ~2.61 s a small piece of tile breaks off. (2000 frames per second with 30 microseconds exposure of each frame.)
Shot 103729:
Disruption at ~2.05 s registered in white visible light (plasma current 1.6 MA). Clip shows 0.225 s of evolution: from 2.025 to 2.25 s. Observe the precursor activity. (2000 frames per second with 30 microseconds exposure of each frame.)
Shot 103756:
Ohmic discharge registered in Li+ light (548.5 nm). Clip shows 0.03 s of evolution: from 3.25 to 3.28 s. Observe the DOLLOP lithium injection at the bottom of the torus. (2000 frames per second with 500 microseconds exposure of each frame.)
Shot 103776:
Neutral beam heated discharge registered in white visible light and with a narrow (20 deg.) field of view. Clip shows 0.085 s of evolution: from 3.35 to 3.435 s. Observe the edge turbulence at the top end of the toroidal limiter. (2000 frames per second with 20 microsecond exposure of each frame.)
Shot 103782:
Neutral beam heated discharge registered in white visible light and with a narrow (20 deg.) field of view. Clip shows 0.1 s of evolution: form 3.0 to 3.1 s. Observe how the spatial wavelength of the turbulence changes when a lithium pellet is injected into the plasma. (2000 frames per second with 20 microseconds exposure of each frame.) (Waveforms)
Shot 103800:
Disruption at ~2.2 s registered in white visible light. Clip shows 0.325 s of evolution: from 2.1 to 2.425 s. Observe the precursor activity (mode locking), the flying debris after the disruption and the "hulla hoops". (2000 frames per seconds with 20 microseconds exposure of each frame.) (Waveforms)
Camera moved to periscope located on Bay H
Shot 103993:
Ohmic discharge registered in white visible light and with a narrow (20 deg.) field of view. Clip shows 0.15 s of evolution: from 3.1 to 3.25 s. Observe the DOLLOPs coming out from their source and moving toroidally. (1000 frames per second with 200 microseconds exposure of each frame.) (Waveforms)
Shot 103996:
Ohmic discharge registered in Li+ light (548.5 nm) and with a narrow (20 deg.) field of view. Clip shows 0.15 s of evolution: from 3.1 to 3.25 s. Note that the DOLLOPs are not seen, only their lithium material being spread toroidally. (1000 frames per second with 300 microsecond exposure of each frame.) (Waveforms)
Shot 103997:
Ohmic discharge registered in white visible light and with a narrow (20 deg.) field of view. Clip shows 0.15 s of evolution: from 3.1 to 3.25 s. Observe the DOLLOPs coming out from their source and moving toroidally. (1000 frames per second with 200 microseconds exposure of each frame.)
Shot 104023:
Neutral beam heated discharge registered in white visible light and with a narrow (20 deg.) field of view. Clip shows 1.637 s of evolution: from 3.6 s to 5.237 s. Observe how the neutral beam injection (present from 4.0 to 5.0 s) causes the DOLLOPs to move in only one toroidal direction: away from the camera. (1000 frames per second with 30 microsecond exposure of each frame.) (Waveforms)
Copyright and Disclaimer
Last update: March 16,1997 by Ricky Maqueda, maqueda@lanl.gov
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