https://doi.org/10.1140/epja/s10050-022-00713-x
Special Article - New Tools and Techniques
PUMA, antiProton unstable matter annihilation
PUMA collaboration
1
Bilfinger Noell GmbH, Würzburg, Germany
2
CEA, IRFU, Gif-sur-Yvette, France
3
CERN, Meyrin, Switzerland
4
GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
5
Institut Pluridisciplinaire Hubert Curien, CNRS/IN2P3, Université Louis Pasteur, Strasbourg, France
6
KEK, Tsukuba, Japan
7
Instituut voor Kern- en Stralingsfysica, KU Leuven, Leuven, Belgium
8
Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-PSL Research University, Collège de France, Paris, France
9
National Centre for Nuclear Research, Otwock, Poland
10
RCNP, Osaka, Japan
11
RIKEN Nishina Center, Saitama, Japan
12
The Open University of Japan, Chiba, Japan
13
Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405, Orsay, France
14
University of Greifswald, Greifswald, Germany
15
Technische Universität Darmstadt, IKP, Darmstadt, Germany
16
Technische Universität Darmstadt, TEMF, Darmstadt, Germany
17
TRIUMF, Vancouver, Canada
aq
aobertelli@ikp.tu-darmstadt.de
Received:
21
October
2021
Accepted:
20
March
2022
Published online:
4
May
2022
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.
© The Author(s) 2022
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