Compression of a mixed antiproton and electron non-neutral plasma to high densities

Aghion, S.; Amsler, C.; Bonomi, G.; Brusa, R. S.; Caccia, M.; Caravita, R.; Castelli, F.; Cerchiari, G.; Comparat, D.; Consolati, G.; Demetrio, A.; Noto, L. Di; Doser, M.; Evans, C.; Fanì, M.; Ferragut, R.; Fesel, J.; Fontana, A.; Gerber, S.; Giammarchi, M.; Gligorova, A.; Guatieri, F.; Haider, S.; Hinterberger, A.; Holmestad, H.; Kellerbauer, A.; Khalidova, O.; Krasnický, D.; Lagomarsino, V.; Lansonneur, P.; Lebrun, P.; Malbrunot, C.; Mariazzi, S.; Márton, J.; Матвеев, В.А.; Mazzotta, Z.; Müller, Simon; Nebbia, G.; Nédélec, P.; Oberthaler, Markus K.; Pacifico, N.; Pagano, D.; Penasa, L.; Petráček, V.; Prelz, F.; Prevedelli, M.; Rienäcker, B.; Robert, J.; Røhne, O.; Rotondi, A.; Sandaker, H.; Santoro, R.; Smestad, L.; Sorrentino, F.; Testera, G.; Tietje, I. C.; Widmann, E.; Yzombard, P.; Zimmer, Christian; Zmeskal, J.; Zurlo, N.; Antonello, M.

doi:10.1140/epjd/e2018-80617-x

Cited by 21 publications

(24 citation statements)

References 26 publications

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“…After studying the properties of the Ps * distribution, the same simulation was extended to evaluate the H production by interaction of the Ps * (typically with n = 16 in AEgIS) with the antiproton plasma, with a measured size of 4 mm (radially) × 2 mm (axially), a central density of 25 ×10 6 cm −3 (for more details on the techniques used in AEgIS to reach such densitiies, see [19]) and a (roughly estimated) Fig. 6 Distributions for the velocity perpendicular to the laser (v ⊥ , color codes as in Figure 5).…”

Section: Some Relevant Simulation Resultsmentioning

confidence: 99%

Monte-Carlo simulation of positronium laser excitation and anti-hydrogen formation via charge exchange

Zurlo¹,

Aghion²,

Amsler³

et al. 2019

Hyperfine Interact

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Section: Some Relevant Simulation Resultsmentioning

confidence: 99%

Monte-Carlo simulation of positronium laser excitation and anti-hydrogen formation via charge exchange

Zurlo¹,

Aghion²,

Amsler³

et al. 2019

Hyperfine Interact

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“…1. A nanoporous silicon positron-Ps converter developed for cryogenic use [13] is located 1.5 cm above the cylindrical Malmberg-Penning trap forp plasmas storage for the pulsedH experiment [14,15]. An aperture in the upper part of the trap electrodes is realized to allow Rydberg Ps atoms produced outside to reach thep plasma.…”

Section: Methodsmentioning

confidence: 99%

Hybrid Imaging and Timing Ps Laser Excitation Diagnostics for Pulsed Antihydrogen Production

et al. 2020

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In this work we present a hybrid detection method providing simultaneous imaging and timing information suitable for fully monitoring positronium (Ps) formation, its laser excitation, and its spatial propagation for the first trials of pulsed antihydrogen (H) production through a charge-exchange reaction with trapped antiprotons (p). This combined method, based on the synchronous acquisition of an EJ-200 scintillation detector and a microchannel plate (MCP) detector with a dual readout (phosphor screen image and electrical pick-up signal), allows all relevant events in the experiment to be accurately determined in time while allowing high resolution images of e + from Ps laser photodissociations to be acquired. The timing calibration process of the two detectors discussed in details as well as the future perspectives opened by this method.

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“…Due to field imperfections in a real trap the achievable densities are significantly lower. The maximum densities that have been achieved for ion trapping are at about 20% of the Brillouin limit for up to 10 9 Mg + ions [111], which are much higher than the densities that PUMA requires, and about 10 7 antiprotons have already been trapped by AEgIS [112].…”

Section: Overviewmentioning

confidence: 99%

“…This technique uses a sine wave applied to a radially segmented electrode, which is seen from trapped particles as a rotating multipole field, to compress the particle cloud. The rotatingwall technique has been successfully extended to a multispecies non-neutral plasma containing antiprotons and elec-trons [112,147]. In case of a multispecies non-neutral plasma, additional difficulty of centrifugal separation [112,148] and, for large particle numbers, diocotron instabilities must be dealt with.…”

Section: Plasma Manipulationmentioning

confidence: 99%

PUMA, antiProton unstable matter annihilation

Obertelli¹

2022

Eur. Phys. J. A

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PUMA, antiProton Unstable Matter Annihilation, is a nuclear-physics experiment at CERN aiming at probing the surface properties of stable and rare isotopes by use of low-energy antiprotons. Low-energy antiprotons offer a very unique sensitivity to the neutron and proton densities at the annihilation site, i.e. in the tail of the nuclear density. Today, no facility provides a collider of low-energy radioactive ions and low-energy antiprotons: while not being a collider experiment, PUMA aims at transporting one billion antiprotons from ELENA, the Extra-Low-ENergy Antiproton ring, to ISOLDE, the rare-isotope beam facility of CERN. PUMA will enable the capture of low-energy antiprotons by short-lived nuclei and the measurement of the emitted radiations. In this way, PUMA will give access to the so-far largely unexplored isospin composition of the nuclear-radial-density tail of radioactive nuclei. The motivations, concept and current status of the PUMA experiment are presented.

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Compression of a mixed antiproton and electron non-neutral plasma to high densities

Cited by 21 publications

References 26 publications

Monte-Carlo simulation of positronium laser excitation and anti-hydrogen formation via charge exchange

Monte-Carlo simulation of positronium laser excitation and anti-hydrogen formation via charge exchange

Hybrid Imaging and Timing Ps Laser Excitation Diagnostics for Pulsed Antihydrogen Production

PUMA, antiProton unstable matter annihilation

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