A solenoid final focusing system with plasma neutralization for target heating experiments

P. K. Roy, P. A. Seidl, J. J. Barnard, F. M. Bieniosek, J. E. Coleman, R. C. Davidson, J. A. Duersch, P. Efthimion, E. P. Gilson, J. Y. Jung, M. Leitner, B. G. Logan, D. Ogata, A. Molvik, A. B. Sefkow, W. L. Waldron, D. R. Welch

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

1 Scopus citations

Abstract

Intense bunches of low-energy heavy ions have been suggested as means to heat targets to the warm dense matter regime (Temperature ∼ 0.1 to 10 eV, solid density ∼1% to 100%). In order to achieve the required intensity on target, a beam spot radius of approximately 0.5 mm, and pulse duration of 2 ns is required with an energy deposition of approximately 1 J/cm2. This translates to a peak beam current of 8A for 0.4 MeV K+ ions. To increase the beam intensity on target, a plasma-filled high-field solenoid is being studied as a means to reduce the beam spot size from several mm to the sub-mm range. A prototype experiment to demonstrate the required beam dynamics has been built at Lawrence Berkeley National Laboratory. The operating magnetic field of the pulsed solenoid is 8 T. Challenges include suitable injection of the plasma into the solenoid so that the plasma density near the focus is sufficiently high to maintain space-charge neutralization of the ion beam pulse. Initial experimental results are presented.

Original languageEnglish (US)
Title of host publicationProceedings of the IEEE Particle Accelerator Conference, PAC07
Pages3519-3521
Number of pages3
DOIs
StatePublished - 2007
EventIEEE Particle Accelerator Conference, PAC07 - Albuquerque, NM, United States
Duration: Jun 25 2007Jun 29 2007

Publication series

NameProceedings of the IEEE Particle Accelerator Conference

Conference

ConferenceIEEE Particle Accelerator Conference, PAC07
Country/TerritoryUnited States
CityAlbuquerque, NM
Period6/25/076/29/07

All Science Journal Classification (ASJC) codes

  • General Engineering

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