Compression of a mixed antiproton and electron non-neutral plasma to high densities
| Autor: | E. Widmann, Rafael Ferragut, Marco Giammarchi, M. Doser, A. Gligorova, J. Marton, S. Haider, Z. Mazzotta, P. Lansonneur, A. Hinterberger, Nicola Pacifico, Giovanni Consolati, Ole Røhne, A. Fontana, Markus K. Oberthaler, B. Rienaecker, O. Khalidova, P. Lebrun, L. Smestad, J. Fesel, V. Petracek, R. S. Brusa, D. Krasnický, P. Nedelec, J. Robert, Ruggero Caravita, Heidi Sandaker, Johann Zmeskal, H. Holmestad, D. Pagano, V. Lagomarsino, Claude Amsler, C. Malbrunot, S.R. Müller, N. Zurlo, Lea Di Noto, P. Yzombard, S. Aghion, C. Zimmer, Romualdo Santoro, S. Mariazzi, G. Testera, M. Fanì, Fabrizio Castelli, Marco Prevedelli, M. Antonello, G. Nebbia, Daniel Comparat, I. C. Tietje, F. Sorrentino, F. Prelz, Luca Penasa, A. Kellerbauer, Sebastian Gerber, V. N. Matveev, F. Guatieri, Giovanni Cerchiari, A. Rotondi, A. Demetrio, C. Evans, G. Bonomi, Massimo Caccia |
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| Přispěvatelé: | Laboratoire Aimé Cotton (LAC), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Aghion, Stefano, Amsler, Claude, Bonomi, Germano, Brusa, Roberto S., Caccia, Massimo, Caravita, Ruggero, Castelli, Fabrizio, Cerchiari, Giovanni, Comparat, Daniel, Consolati, Giovanni, Demetrio, Andrea, Di Noto, Lea, Doser, Michael, Evans, Craig, Fanì, Mattia, Ferragut, Rafael, Fesel, Julian, Fontana, Andrea, Gerber, Sebastian, Giammarchi, Marco, Gligorova, Angela, Guatieri, Francesco, Haider, Stefan, Hinterberger, Alexander, Holmestad, Helga, Kellerbauer, Alban, Khalidova, Olga, Krasnický, Daniel, Lagomarsino, Vittorio, Lansonneur, Pierre, Lebrun, Patrice, Malbrunot, Chloé, Mariazzi, Sebastiano, Marton, Johann, Matveev, Victor, Mazzotta, Zeudi, Müller, Simon R., Nebbia, Giancarlo, Nedelec, Patrick, Oberthaler, Marku, Pacifico, Nicola, Pagano, Davide, Penasa, Luca, Petracek, Vojtech, Prelz, Francesco, Prevedelli, Marco, Rienaecker, Benjamin, Robert, Jacque, Røhne, Ole M., Rotondi, Alberto, Sandaker, Heidi, Santoro, Romualdo, Smestad, Lillian, Sorrentino, Fiodor, Testera, Gemma, Tietje, Ingmari C., Widmann, Eberhard, Yzombard, Pauline, Zimmer, Christian, Zmeskal, Johann, Zurlo, Nicola, Antonello, Massimiliano, École normale supérieure - Cachan (ENS Cachan)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Electron density
Antiparticle experimental methods CERN Lab Penning trap Context (language use) Electron gravity antimatter trapped particles 01 natural sciences electron: density 010305 fluids & plasmas antiproton trapping Penning–Malmberg trap Nuclear physics anti-p: density density: spatial distribution Physics in General Atomic and Molecular Physics 0103 physical sciences Physics::Atomic Physics 010306 general physics Antihydrogen Nuclear Experiment Physics Plasma Physics antihydrogen: production electron: cloud imaging Plasma electron: plasma Atomic and Molecular Physics and Optics anti-p: plasma [PHYS.PHYS.PHYS-GEN-PH]Physics [physics]/Physics [physics]/General Physics [physics.gen-ph] Antiproton efficiency Antimatter Physics::Accelerator Physics High Energy Physics::Experiment and Optics |
| Zdroj: | Eur.Phys.J.D Eur.Phys.J.D, 2018, 72 (4), pp.76. ⟨10.1140/epjd/e2018-80617-x⟩ The European Physical Journal D |
| ISSN: | 1434-6060 |
| Popis: | Abstract We describe a multi-step “rotating wall” compression of a mixed cold antiproton–electron non-neutral plasma in a 4.46 T Penning–Malmberg trap developed in the context of the AEḡIS experiment at CERN. Such traps are routinely used for the preparation of cold antiprotons suitable for antihydrogen production. A tenfold antiproton radius compression has been achieved, with a minimum antiproton radius of only 0.17 mm. We describe the experimental conditions necessary to perform such a compression: minimizing the tails of the electron density distribution is paramount to ensure that the antiproton density distribution follows that of the electrons. Such electron density tails are remnants of rotating wall compression and in many cases can remain unnoticed. We observe that the compression dynamics for a pure electron plasma behaves the same way as that of a mixed antiproton and electron plasma. Thanks to this optimized compression method and the high single shot antiproton catching efficiency, we observe for the first time cold and dense non-neutral antiproton plasmas with particle densities n ≥ 1013 m−3, which pave the way for an efficient pulsed antihydrogen production in AEḡIS. Graphical abstract |
| Databáze: | OpenAIRE |
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