Bochum 2015 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
P: Fachverband Plasmaphysik
P 18: Low Temperature Plasmas II
P 18.1: Hauptvortrag
Mittwoch, 4. März 2015, 10:30–11:00, HZO 30
En route to matter-antimatter pair plasmas — •Eve V. Stenson1, Uwe Hergenhahn1, Holger Niemann1, 2, Norbert Paschkowski1, Haruhiko Saitoh1, Juliane Stanja1, Thomas Sunn Pedersen1, 2, Lutz Schweikhard2, Christoph Hugenschmidt3, James R. Danielson4, and Clifford M. Surko4 — 1Max Planck Institute for Plasma Physics, Greifswald & Garching, Germany — 2Ernst Moritz Arndt University of Greifswald, Greifswald, Germany — 3Technische Universität München, Garching, Germany — 4University of California, San Diego, La Jolla, U.S.A.
The APEX and PAX projects have as their overarching goal the laboratory creation and confinement of the world’s first positron-electron pair plasma. Plasmas of this type have been the subject of hundreds of theoretical investigations and are also believed to play a role in various astrophysical environments. In order to achieve this goal in an experimentally accessible volume (e.g., 10 liters), a record number (≥ 1010) of cold (∼ 1 eV) positrons are to be accumulated and combined with a corresponding population of electrons. Notable requirements include a high-intensity positron beam (such as NEPOMUC), a suitable magnetic confinement device for the pair plasma (such as a levitated dipole), high-efficiency tools for bridging the two (i.e., means by which the positrons can be efficiently cooled, trapped, and injected across flux surfaces), and diagnostics not only for the pair plasma, but also for the positron beam and for intermediary non-neutral plasmas. This talk will summarize the project as a whole and recent work by the APEX/PAX team on its various elements.