Tracer-encapsulated pellet injector for plasma diagnostics

An injector for making solid hydrogen pellets around impurity cores has been developed for plasma transport study in large helical device. A technique has been employed for automatic loading carbon or polystyrene cores of 0.2 mm diameter from a gun magazine to a light-gas gun barrel. The injector is...

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Bibliographic Details
Published in:Review of scientific instruments 2005-05, Vol.76 (5), p.053507-053507-7
Main Authors: Sudo, S., Viniar, I., Lukin, A., Reznichenko, P., Umov, A.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CARBON
CYLINDRICAL CONFIGURATION
HYDROGEN
LHD DEVICE
PELLETS
PLASMA
PLASMA CONFINEMENT
PLASMA DIAGNOSTICS
PLASMA IMPURITIES
PLASMA INSTABILITY
POLYSTYRENE
STELLARATORS
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Description
Summary:An injector for making solid hydrogen pellets around impurity cores has been developed for plasma transport study in large helical device. A technique has been employed for automatic loading carbon or polystyrene cores of 0.2 mm diameter from a gun magazine to a light-gas gun barrel. The injector is equipped with a cryocooler and is able to form a 3.2 mm long and 3 mm diameter cylindrical solid hydrogen pellet at 7-8 K with an impurity core in its center within 6 min and to inject it in the light-gas gun up to 1 km∕s.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.1899323