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Measuring time of flight of fusion products in an inertial electrostatic confinement fusion device for spatial profiling of fusion reactions
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10.1063/1.4793771
/content/aip/journal/rsi/84/3/10.1063/1.4793771
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/3/10.1063/1.4793771

Figures

Image of FIG. 1.
FIG. 1.

Schematic design of UW IEC device HOMER.

Image of FIG. 2.
FIG. 2.

FIDO diagnostic arm with 20° bend at elbow and 7 kG electromagnet.

Image of FIG. 3.
FIG. 3.

Scale of noise reduction due to FIDO setup.

Image of FIG. 4.
FIG. 4.

Diagram of length scale of TOF experimental setup.

Image of FIG. 5.
FIG. 5.

Schematic of TOF diagnostic with identical FIDO arms on opposite sides of chamber creating direct line of sight through core of IEC device.

Image of FIG. 6.
FIG. 6.

Timing and energy electronics for TOF system.

Image of FIG. 7.
FIG. 7.

External alignment setup for collection arm.

Image of FIG. 8.
FIG. 8.

Laser diode carriage used for aligning collection arm with photodetector carriage (not shown) in opposing arm.

Image of FIG. 9.
FIG. 9.

(Left) Fixed 20° bend collimator arm. (Right) Adjustable collimator arm capable of ±30° bend.

Image of FIG. 10.
FIG. 10.

Spatial profile of D–D fusion reactions along a radial chord through a spherically concentric IEC device collected from the TOF diagnostic. Results are displayed as counts per unit volume along the chord, with the counts normalized to compensate for the slight broadening of the region of view that occurs towards the intersection of the region of view of each TOF arm.

Image of FIG. 11.
FIG. 11.

Spatial profile of core region of IEC device when cathode is shifted by 1 cm in both directions along the radial chord of view of the TOF diagnostic. Results indicate the TOF diagnostic was able to recognize the shift in the peak in fusion counts.

Tables

Generic image for table
Table I.

Energy spectra collected at 60 kV, 30 mA, 2 mTorr deuterium. All counts are normalized for the same total collection time. Magnetic field at which each one of these configuration was set was first predicted by SIMION and then confirmed as the ideal point experimentally.

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/content/aip/journal/rsi/84/3/10.1063/1.4793771
2013-03-05
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Measuring time of flight of fusion products in an inertial electrostatic confinement fusion device for spatial profiling of fusion reactions
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/3/10.1063/1.4793771
10.1063/1.4793771
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