Plasma manipulation techniques for positron storage in a multicell trap
- Department of Physics, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0319 (United States)
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.
- OSTI ID:
- 20860464
- Journal Information:
- Physics of Plasmas, Vol. 13, Issue 12; Other Information: DOI: 10.1063/1.2390690; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Progress towards a practical multicell positron trap
Radial compression and torque-balanced steady states of single-component plasmas in Penning-Malmberg traps