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Optical lightpipe as a high-bandwidth fusion diagnostic
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View: Figures


Image of FIG. 1.
FIG. 1.

Sketch of experimental arrangement. The lightpipe allows signals to be recorded electronically in a well-shielded location about from target chamber center.

Image of FIG. 2.
FIG. 2.

Streak data for scintillator/neutron pulse. The optical streak image (center) shows the fidu timing pulse train at the top and the scintillator pulse below. Lineouts on a nanosecond time scale for the fidu and scintillator are shown on the top and bottom, respectively.

Image of FIG. 3.
FIG. 3.

Streak data for neutron Cherenkov/neutron pulse. The window optical streak of the fidu and neutron signals are shown with the same layout as in Fig. 2. Here, the FWHM represents a convolution of the fusion burn width and the streak camera resolution.

Image of FIG. 4.
FIG. 4.

Digitizer recording of threshold Cherenkov -ray signal. The digitizer recording shows that the distinct Cherenkov signal at (solid) precedes the neutron Cherenkov signal by about . With the removed from the detector cell, only the neutron Cherenkov signal (dashed) remains.

Image of FIG. 5.
FIG. 5.

Relative timing of neutron and threshold Cherenkov signals. Identification of the threshold Cherenkov -ray signal is confirmed by temporal correlation with the neutron signal (shown above) and by amplitude correlation with neutron yield.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optical lightpipe as a high-bandwidth fusion diagnostic