A combined sextupole-Malmberg-Penning trap for cold non neutral plasmas and anti-hydrogen
- Istituto Nazionale di Fisica Nucleare, Sezione di Genova, 16146 Genova (Italy)
- Department of Physics, CERN, CH-1211 Geneva 23 (Switzerland)
This work reports experimental data obtained with electrons stored in a Penning-Malmberg trap surrounded by a sextupole radial magnetic field. This trap geometry is one of the candidates for trapping antihydrogen atoms in the place where they are produced starting from cold antiprotons and positrons or positronium. The measurements show that electron plasmas with parameters matching the range used for positrons and electrons in the anti-hydrogen experiments (number of particles ranging from few 106 up to several 107 and densities of the order of 108 - 109 cm-3, radius of the order of 1-2 mm) can be transported with 100 % efficiency in a trap region that simultaneously confines completely the charged particles and the neutral anti-hydrogen in the radial plane. Inside this trap plasma storage times of the order of several tens of seconds up to some hundreds of seconds are measured. The plasma storage times are consistent with those needed for anti-hydrogen production; however the increase of the plasma temperature due to the expansion could prevent to get trappable antihydrogen.
- OSTI ID:
- 20891681
- Journal Information:
- AIP Conference Proceedings, Vol. 862, Issue 1; Conference: Non-neutral plasma physics VI: Workshop on non-neutral plasmas 2006, Aarhus (Denmark), 25-29 Jun 2006; Other Information: DOI: 10.1063/1.2387920; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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