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Title: Plasma manipulation techniques for positron storage in a multicell trap

Abstract

New plasma manipulation techniques are described that are central to the development of a multicell Penning trap designed to increase positron storage by orders of magnitude (e.g., to particle numbers N{>=}10{sup 12}). The experiments are done using test electron plasmas. A technique is described to move plasmas across the confining magnetic field and to deposit them at specific radial and azimuthal positions. Techniques to fill and operate two in-line plasma cells simultaneously, and the use of 1 kV confinement potentials are demonstrated. These experiments establish the capabilities to create, confine, and manipulate plasmas with the parameters required for a multicell trap; namely, particle numbers >10{sup 10} in a single cell with plasma temperature {<=}0.2 eV for plasma lengths {approx}10 cm and radii {<=}0.2 cm. The updated design of a multicell positron trap for 10{sup 12} particles is described.

Authors:
; ;  [1]
  1. Department of Physics, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0319 (United States)
Publication Date:
OSTI Identifier:
20860464
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 13; Journal Issue: 12; Other Information: DOI: 10.1063/1.2390690; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 43 PARTICLE ACCELERATORS; DESIGN; ELECTRON TEMPERATURE; ELECTRONS; EV RANGE; ION TEMPERATURE; MAGNETIC FIELDS; PLASMA; PLASMA CELLS; PLASMA CONFINEMENT; PLASMA POTENTIAL; POSITRON SOURCES; POSITRONS; TRAPS

Citation Formats

Danielson, J. R., Weber, T. R., and Surko, C. M.. Plasma manipulation techniques for positron storage in a multicell trap. United States: N. p., 2006. Web. doi:10.1063/1.2390690.
Danielson, J. R., Weber, T. R., & Surko, C. M.. Plasma manipulation techniques for positron storage in a multicell trap. United States. doi:10.1063/1.2390690.
Danielson, J. R., Weber, T. R., and Surko, C. M.. Fri . "Plasma manipulation techniques for positron storage in a multicell trap". United States. doi:10.1063/1.2390690.
@article{osti_20860464,
title = {Plasma manipulation techniques for positron storage in a multicell trap},
author = {Danielson, J. R. and Weber, T. R. and Surko, C. M.},
abstractNote = {New plasma manipulation techniques are described that are central to the development of a multicell Penning trap designed to increase positron storage by orders of magnitude (e.g., to particle numbers N{>=}10{sup 12}). The experiments are done using test electron plasmas. A technique is described to move plasmas across the confining magnetic field and to deposit them at specific radial and azimuthal positions. Techniques to fill and operate two in-line plasma cells simultaneously, and the use of 1 kV confinement potentials are demonstrated. These experiments establish the capabilities to create, confine, and manipulate plasmas with the parameters required for a multicell trap; namely, particle numbers >10{sup 10} in a single cell with plasma temperature {<=}0.2 eV for plasma lengths {approx}10 cm and radii {<=}0.2 cm. The updated design of a multicell positron trap for 10{sup 12} particles is described.},
doi = {10.1063/1.2390690},
journal = {Physics of Plasmas},
number = 12,
volume = 13,
place = {United States},
year = {Fri Dec 15 00:00:00 EST 2006},
month = {Fri Dec 15 00:00:00 EST 2006}
}