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TJ-II:Pellet injector: Difference between revisions
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A compact multi-barrel pellet injector system is being | |||
developed for the TJ-II stellarator. Its design is based on the | |||
system currently installed at the MST facility (Univ. Winconsin) | |||
and will provide maximum flexibility at minimal cost, while also | |||
allowing for future upgrades. It is a four-barrel system destined | |||
for use both as an active plasma diagnostic and as a plasma | |||
fueling source. In order to achieve both objectives it will be | |||
sufficiently flexible to allow frozen hydrogen pellets with | |||
diameters from 0.4 to 1 mm to be formed and accelerated to | |||
velocities between 100 and 1000 m s<sup>-1</sup>. However, floor space | |||
restrictions and nearest-neighbor considerations limits the | |||
overall length to <1.7 m (mechanical punch end to final guide | |||
tube interfaces). This will be done by redesigns of the MST gun | |||
barrel, vacuum coupling, gas dump and guide tube sectors. | |||
Finally, the system is completed by stand-alone instrumentation | |||
and controls, as well as LabView controlled gas manifolds. | |||
<ref>[http://www.telegrid.enea.it/Conferenze/SOFE05/DATA/07_03.PDF K.J.McCarthy, ''A compact flexible pellet injector for the TJ-II stellarator]</ref> | |||
[[File:TJ-II_pellet_injector.jpg|532px|thumb|centre|Diagram of the TJ-II pellet injector]] | [[File:TJ-II_pellet_injector.jpg|532px|thumb|centre|Diagram of the TJ-II pellet injector]] | ||
==References== | |||
<references /> | |||