Hannover 2020 – scientific programme
The DPG Spring Meeting in Hannover had to be cancelled! Read more ...
Parts | Days | Selection | Search | Updates | Downloads | Help
P: Fachverband Plasmaphysik
P 5: Poster Session 1
P 5.7: Poster
Monday, March 9, 2020, 16:30–18:30, Empore Lichthof
Manipulating the radial deposition of positrons in a magnetic dipole trap — •Stefan Nißl1,2, Eve V. Stenson1,2,3, Juliane Horn-Stanja1, Uwe Hergenhahn1, Thomas Sunn Pedersen1,4, Haruhiko Saitoh6, Christoph Hugenschmidt2, Markus Singer2, Matthew R. Stoneking1,5, and James R. Danielson3 — 1Max-Planck-Institute for Plasma Physics — 2Technische Universität München — 3University of California, San Diego — 4University of Greifswald — 5Lawrence University — 6The University of Tokyo
In a pair plasma, both particle species have the same mass. Compared to an electron--ion plasma, a pair plasma is predicted to have unique characteristics and excellent stability properties. A Positron--Electron eXperiment (APEX) has the goal to create such a kind of plasma in a magnetic dipole trap for the first time. An important step towards this goal is to know how parameters of the experiment, such as electrode biases, effect the radial deposition of positrons in the magnetic dipole field. For that, we reanalyzed experimental data, compared them to numerical single-particle simulations, and found multiple parameters that modify the radial deposition of positrons without deteriorating the required high injection efficiency. These results can be used to design upcoming experiments about long confinement and pulse stacking.