Ingmari Christa Tietje
(TU Berlin, CERN)
Non-neutral plasmas – in the zero temperature limit - can be described in analogy to a $2$-dimensional fluid [1]. We observe the temporal stages of a Kelvin-Helmholtz-like diocotron instability of an antiproton ring. The evolutionary stages are comprised of a linear part during which the instability grows, followed by a collapse of the ring into vortices, and a nonlinear part consisting of vortex interactions. Some characteristics of the evolutionary stages can be related to the initial ring dimensions.
A second part of the talk addresses the so-called SDREVC (strong drive evaporative cooling) technique, which was pioneered by [2], and which we have successfully implemented in the AEgIS experiment. The technique ``tailors'' pure electron plasmas in terms of their radii, densities and thus particle number to an accuracy of 1-2 \%. This is an improvement of a factor of $10$ with respect to what was reported by experiments from the low-energy antimatter community prior to SDREVC.
[1] R. H. Levy, “Diocotron instability in a cylindrical geometry”, The Physics of Fluids
8, 1288–1295 (1965).
[2] ALPHA collaboration “Enhanced control and reproducibility of non-neutral plasmas”, Phys. Rev. Lett. 120, 025001 (2018).
Details
Tietje, Ingmari Christa, TU Berlin, Germany/CERN
| Is this abstract from experiment? |
Yes
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| Name of experiment and experimental site |
AEgIS, Antiproton Decelerator @ CERN
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| Is the speaker for that presentation defined? |
Yes
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| Internet talk |
Yes
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Alban Kellerbauer
(European Commission)
Mr
Alberto Rotondi
(Universita and INFN (IT))
Alexander Hinterberger
(Politecnico di Milano (IT))
Alexandre Belov
(Russian Academy of Sciences (RU))
Andrea Demetrio
(Ruprecht Karls Universitaet Heidelberg (DE))
Angela Gligorova
(Austrian Academy of Sciences (AT))
Antoine Camper
(University of Oslo (NO))
Benjamin Rienacker
(Physics Department, CERN)
Chloe Malbrunot
(CERN)
Christian Zimmer
(University of Oslo (NO))
Prof.
Claude Amsler
(Austrian Academy of Sciences (AT))
Daniel Krasnicky
(INFN e Universita Genova (IT))
Daniel Pierre Comparat
(Laboratoire Aime Cotton CNRS (FR))
Davide Pagano
(Universita di Brescia (IT))
Emanuel David Oswald
(University of Innsbruck (AT))
Fabrizio Castelli
(Università degli Studi e INFN Milano (IT))
Francesco Guatieri
(Universita degli Studi di Trento è INFN (IT))
Francesco Prelz
(Università degli Studi e INFN Milano (IT))
Gemma Testera
(INFN e Universita Genova (IT))
Germano Bonomi
(Universita di Brescia (IT))
Giancarlo Nebbia
(Universita e INFN, Padova (IT))
Giovanni Consolati
(Università degli Studi e INFN Milano (IT))
Heidi Sandaker
(University of Oslo (NO))
Ingmari Christa Tietje
(TU Berlin, CERN)
Julian Fesel
L.T. Glogglerl
(Physics Department, CERN, 1211 Geneva 23, Switzerland)
Lea Di Noto
(INFN e Universita Genova (IT))
Lilian Nowak
(University of Vienna (AT))
Luca Penasa
(Universita degli Studi di Trento and INFN (IT))
Luca Povolo
(Università degli Studi di Trento)
Marco Giammarchi
(Università degli Studi e INFN Milano (IT))
Marco Prevedelli
(Universita e INFN, Bologna (IT))
Markus Kurt Oberthaler
(Ruprecht-Karls-Universitaet Heidelberg (DE))
Massimiliano Antonello
(Università degli Studi e INFN Milano (IT))
Massimo Caccia
(Universita & INFN, Milano-Bicocca (IT))
Mattia Fani'
(CERN, INFN Sezione di Genova and Universita Genova (IT))
Michael Doser
(CERN)
Nicola Zurlo
(Universita di Brescia (IT))
Ole Rohne
(University of Oslo (NO))
Olga Khalidova
(CERN)
P. Cheinet
(Laboratoire Aimé Cotton, Université Paris-Sud, ENS Paris)
Patrick Nedelec
(Universite Claude Bernard Lyon I (FR))
Prof.
Rafael Omar Ferragut
(Politecnico di Milano e INFN Milano (IT))
Roberto Sennen Brusa
(Universita degli Studi di Trento and INFN (IT))
Romualdo Santoro
(Insubria University and INFN - MI)
Ruggero Caravita
(Universita degli Studi di Trento and INFN (IT))
S. R. Müller
(Kirchhoff Institute for Physics, Heidelberg University)
Sebastian Gerber
(Politecnico di Milano (IT))
Sebastiano Mariazzi
(Universita degli Studi di Trento and INFN (IT))
Stefan Haider
(CERN)
Tim Hilmar Wolz
(Technische Universitaet Darmstadt (DE))
V. Lagomarsino
(INFN Genova, via Dodecaneso 33, 16146 Genova, Italy)
V. Toso
(INFN Milano)
Viktor Matveev
(Joint Institute for Nuclear Research (RU))
Vojtech Petracek
(Czech Technical University (CZ))
