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Long-pulse plasma source for SMOLA helical mirror

Part of: Laboratory and Astrophysical Plasmas: New Perspectives

Published online by Cambridge University Press:  12 March 2021

Ivan A. Ivanov Open the ORCID record for Ivan A. Ivanov [Opens in a new window] ,
V. O. Ustyuzhanin ,
A. V. Sudnikov Open the ORCID record for A. V. Sudnikov [Opens in a new window]  and
A. Inzhevatkina
Ivan A. Ivanov*
Affiliation:
Budker Institute of Nuclear Physics, 11 Lavrentyev av., Novosibirsk630090, Russia
V. O. Ustyuzhanin
Affiliation:
Budker Institute of Nuclear Physics, 11 Lavrentyev av., Novosibirsk630090, Russia Novosibirsk State University, 1 Pirogov st., Novosibirsk630090, Russia
A. V. Sudnikov
Affiliation:
Budker Institute of Nuclear Physics, 11 Lavrentyev av., Novosibirsk630090, Russia
A. Inzhevatkina
Affiliation:
Budker Institute of Nuclear Physics, 11 Lavrentyev av., Novosibirsk630090, Russia
*
†Email address for correspondence: i.a.ivanov@inp.nsk.su
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Abstract

A plasma gun for forming a plasma stream in the open magnetic mirror trap with additional helicoidal field SMOLA is described. The plasma gun is an axisymmetric system with a planar circular hot cathode based on lanthanum hexaboride and a hollow copper anode. The two planar coils are located around the plasma source and create a magnetic field of up to 200 mT. The magnetic field forms the magnetron configuration of the discharge and provides a radial electric insulation. The source typically operates with a discharge current of up to 350 A in hydrogen. Plasma parameters in the SMOLA device are Ti ~ 5 eV, Te ~ 5–40 eV and ni ~ (0.1–1)  × 1019 m−3. Helium plasma can also be created. The plasma properties depend on the whole group of initial technical parameters: the cathode temperature, the feeding gas flow, the anode-cathode supply voltage and the magnitude of the cathode magnetic insulation.

Keywords

plasma devicesplasma propertieselectric discharges
Type
Research Article
Information
Journal of Plasma Physics , Volume 87 , Issue 2 , April 2021 , 845870201
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press

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