München 2019 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 18: Postersitzung
P 18.67: Poster
Donnerstag, 21. März 2019, 16:30–18:30, Foyer Audimax
The development of an Intense Pulsed Positron Source (IPPS) — Martin Singer2, •Stephan König1, Uwe Hergenhahn2, Gerrit Marx1, Thomas Sunn Pedersen2, and Lutz Schweikhard1 — 1Institut für Physik, Universität Greifswald, Felix-Hausdorff-Str.6, 17489 Greifswald — 2Max-Planck-Institut für Plasmaphysik,Wendelsteinstr. 1, 17491 Greifswald
The IPPS (Intense Pulsed Positron Source) project is part of the APEX (A Positron Electron eXperiment) collaboration [1] with the aim to produce a positron-electron pair-plasma. The worlds brightest positron source located at NEPOMUC (NEutron inducted Positron source MUniCh) at FRM2 in Garching produces a continuous beam. However, for the positron pulses needed for our purpose it is necessary to accumulate and confine the positrons for long times (in the order of hours). To reach this goal it is planned to build a multi cell trap consisting of a Penning-Malmberg trap as a master cell located on axis of the magnetic field of a superconducting magnet and several further Penning-Malmberg traps located on and off axis behind the master cell [2]. The master cell will confine an initial bunch of positrons and fill the other traps by excitation of the radial motion of the positron plasma. When the necessary number of positrons is reached they are quickly released.
In this contribution we present the general setup and preparatory measurements with one Penning-Malmberg trap serving as master cell.
[1] T. Sunn Pedersen et al., New J. Phys. 14, 035010 (2011)
[2] J. R. Danielson et al., Phys. Plasmas 13, 123502 (2006)