Rostock 2019 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 24: Atomic collisions and ultracold plasmas
A 24.1: Poster
Mittwoch, 13. März 2019, 16:15–18:15, S Fobau Physik
Progress towards an "Intense Pulsed Positron Source" (IPPS) — Matrin Singer2, •Stephan König1, Uwe Hergenhahn2, Gerrit Marx1, Thomas Sunn Pedersen2, and Lutz Schweikhard1 — 1Institut of physics, University of Greifswald, Felix-Hausdorff-Str.6, 17489 Greifswald — 2Max Planck Institute for Plasma Physics,Wendelsteinstr. 1, 17491 Greifswald
The development of an Intense Pulsed Positron Source (IPPS) is part of the APEX (A Positron Electron eXperiment) and PAX (Positron Accumulation eXperiment) project [1] with the goal to produce and confine the world’s first matter-antimatter pair plasma. The world’s brightest positron source, located at FRM2 at Nepomuc (NEutron inducted Positron source MUniCh) in Garching, provides about 109 positrons per second. The IPPS project aims at the accumulation and confinement of up to 1012 positrons.
In this contribution we present the layout of IPPS and preliminary experimental results. In a first step a Penning-Malmberg trap is built and tested at Greifswald to accumulate, store and control the radial motion of about 1010 electrons. In a second step the electrons will be guided into multiple Penning- Malmberg traps on axis and radially spread behind the first trap [2]. After the successful test of the multiple traps, the setup will be moved to NEPOMUC.
[1] T. Sunn Pedersen et al., New J. Phys. 14, 035010 (2011)
[2] J. R. Danielson et al., Phys. Plasmas 13, 123502 (2006)