Development of advanced compact railguns for injection of hypervelocity hydrogen pellets into magnetic fusion plasmas

M. W. Tompkins, M. A. Anderson, Kyekyoon Kim, Q. Feng, J. Zhang, T. L. King

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have designed, fabricated, and tested a number of compact railguns utilizing a variety of gun geometries, augmentation schemes, and state-of-the-art rail and insulator materials in order to develop an injector that can accelerate pellets of hydrogen isotopes to very high velocities (approx.10 km/s) continuously and at high repetition rates for refueling magnetically confined fusion plasmas. These advanced guns are designed to achieve two goals: to minimize or eliminate gunwall erosion and to produce the maximum possible pellet acceleration. These closely related goals assure long gun lifetimes. Using an advanced transaugmented compact gun with an acceleration length of only 45-cm, we have recently achieved hydrogen pellet velocities as high as 2.2 km/s with a time-averaged pellet acceleration of 4.7×106 m/s2 at a modest rail current of 10kA. This paper includes a brief overview of our railgun control and diagnostic systems and discusses recent results of our railgun experiments using both plexiglass and cryogenic hydrogen pellets.

Original languageEnglish (US)
Title of host publicationProceedings - Symposium on Fusion Engineering
PublisherIEEE
Number of pages1
Volume2
StatePublished - Dec 1 1995
EventProceedings of the 1995 16th IEEE/NPSS Symposium on Fusion Engineering. Part 1 (of 2) - Champaign, IL, USA
Duration: Oct 1 1995Oct 5 1995

Other

OtherProceedings of the 1995 16th IEEE/NPSS Symposium on Fusion Engineering. Part 1 (of 2)
CityChampaign, IL, USA
Period10/1/9510/5/95

Fingerprint

Rail guns
hypervelocity
pellets
Fusion reactions
fusion
injection
Plasmas
Hydrogen
Rails
hydrogen
Plasma guns
rails
Cryogenics
Isotopes
Erosion
hydrogen isotopes
refueling
injectors
Geometry
polymethyl methacrylate

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

Cite this

Tompkins, M. W., Anderson, M. A., Kim, K., Feng, Q., Zhang, J., & King, T. L. (1995). Development of advanced compact railguns for injection of hypervelocity hydrogen pellets into magnetic fusion plasmas. In Proceedings - Symposium on Fusion Engineering (Vol. 2). IEEE.

Development of advanced compact railguns for injection of hypervelocity hydrogen pellets into magnetic fusion plasmas. / Tompkins, M. W.; Anderson, M. A.; Kim, Kyekyoon; Feng, Q.; Zhang, J.; King, T. L.

Proceedings - Symposium on Fusion Engineering. Vol. 2 IEEE, 1995.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tompkins, MW, Anderson, MA, Kim, K, Feng, Q, Zhang, J & King, TL 1995, Development of advanced compact railguns for injection of hypervelocity hydrogen pellets into magnetic fusion plasmas. in Proceedings - Symposium on Fusion Engineering. vol. 2, IEEE, Proceedings of the 1995 16th IEEE/NPSS Symposium on Fusion Engineering. Part 1 (of 2), Champaign, IL, USA, 10/1/95.
Tompkins MW, Anderson MA, Kim K, Feng Q, Zhang J, King TL. Development of advanced compact railguns for injection of hypervelocity hydrogen pellets into magnetic fusion plasmas. In Proceedings - Symposium on Fusion Engineering. Vol. 2. IEEE. 1995
Tompkins, M. W. ; Anderson, M. A. ; Kim, Kyekyoon ; Feng, Q. ; Zhang, J. ; King, T. L. / Development of advanced compact railguns for injection of hypervelocity hydrogen pellets into magnetic fusion plasmas. Proceedings - Symposium on Fusion Engineering. Vol. 2 IEEE, 1995.
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