Back
Full-text
Journal article

AEgIS at ELENA: outlook for physics with a pulsed cold antihydrogen beam.

  • Doser M Physics Department, CERN, 1211 Geneva 23, Switzerland michael.doser@cern.ch.
  • Aghion S Politecnico of Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy.
  • Amsler C Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria.
  • Bonomi G Department of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, 25123 Brescia, Italy.
  • Brusa RS Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy.
  • Caccia M INFN Milano, via Celoria 16, 20133 Milano, Italy.
  • Caravita R Department of Physics, University of Genova, via Dodecaneso 33, 16146 Genova, Italy.
  • Castelli F INFN Milano, via Celoria 16, 20133 Milano, Italy.
  • Cerchiari G Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany.
  • Comparat D Laboratoire Aimé Cotton, Université Paris-Sud, ENS Cachan, CNRS, Université Paris-Saclay, 91405 Orsay Cedex, France.
  • Consolati G Politecnico of Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy.
  • Demetrio A Kirchhoff-Institute for Physics, Heidelberg University, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany.
  • Di Noto L Department of Physics, University of Genova, via Dodecaneso 33, 16146 Genova, Italy.
  • Evans C Politecnico of Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy.
  • Fanì M Physics Department, CERN, 1211 Geneva 23, Switzerland.
  • Ferragut R Politecnico of Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy.
  • Fesel J Physics Department, CERN, 1211 Geneva 23, Switzerland.
  • Fontana A INFN Pavia, via Bassi 6, 27100 Pavia, Italy.
  • Gerber S Physics Department, CERN, 1211 Geneva 23, Switzerland.
  • Giammarchi M INFN Milano, via Celoria 16, 20133 Milano, Italy.
  • Gligorova A Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria.
  • Guatieri F Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy.
  • Haider S Physics Department, CERN, 1211 Geneva 23, Switzerland.
  • Hinterberger A Physics Department, CERN, 1211 Geneva 23, Switzerland.
  • Holmestad H Department of Physics, University of Oslo, Sem Slandsvei 24, 0371 Oslo, Norway.
  • Kellerbauer A Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany.
  • Khalidova O Physics Department, CERN, 1211 Geneva 23, Switzerland.
  • Krasnický D INFN Genova, via Dodecaneso 33, 16146 Genova, Italy.
  • Lagomarsino V Department of Physics, University of Genova, via Dodecaneso 33, 16146 Genova, Italy.
  • Lansonneur P Institute of Nuclear Physics, CNRS/IN2p3, University of Lyon 1, 69622 Villeurbanne, France.
  • Lebrun P Institute of Nuclear Physics, CNRS/IN2p3, University of Lyon 1, 69622 Villeurbanne, France.
  • Malbrunot C Physics Department, CERN, 1211 Geneva 23, Switzerland.
  • Mariazzi S INFN Padova, via Marzolo 8, 35131 Padova, Italy.
  • Marton J Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria.
  • Matveev V Institute for Nuclear Research of the Russian Academy of Science, Moscow 117312, Russia.
  • Mazzotta Z INFN Milano, via Celoria 16, 20133 Milano, Italy.
  • Müller SR Kirchhoff-Institute for Physics, Heidelberg University, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany.
  • Nebbia G INFN Padova, via Marzolo 8, 35131 Padova, Italy.
  • Nedelec P Institute of Nuclear Physics, CNRS/IN2p3, University of Lyon 1, 69622 Villeurbanne, France.
  • Oberthaler M Kirchhoff-Institute for Physics, Heidelberg University, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany.
  • Pacifico N Physics Department, CERN, 1211 Geneva 23, Switzerland.
  • Pagano D Department of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, 25123 Brescia, Italy.
  • Penasa L Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy.
  • Petracek V Czech Technical University in Prague, Brehová 7, 11519 Prague 1, Czech Republic.
  • Prelz F INFN Milano, via Celoria 16, 20133 Milano, Italy.
  • Prevedelli M University of Bologna, Viale Berti Pichat 6/2, 40126 Bologna, Italy.
  • Rienaecker B Physics Department, CERN, 1211 Geneva 23, Switzerland.
  • Robert J Laboratoire Aimé Cotton, Université Paris-Sud, ENS Cachan, CNRS, Université Paris-Saclay, 91405 Orsay Cedex, France.
  • Røhne OM Department of Physics, University of Oslo, Sem Slandsvei 24, 0371 Oslo, Norway.
  • Rotondi A INFN Pavia, via Bassi 6, 27100 Pavia, Italy.
  • Sandaker H Department of Physics, University of Oslo, Sem Slandsvei 24, 0371 Oslo, Norway.
  • Santoro R INFN Milano, via Celoria 16, 20133 Milano, Italy.
  • Smestad L Physics Department, CERN, 1211 Geneva 23, Switzerland.
  • Sorrentino F INFN Genova, via Dodecaneso 33, 16146 Genova, Italy.
  • Testera G INFN Genova, via Dodecaneso 33, 16146 Genova, Italy.
  • Tietje IC Physics Department, CERN, 1211 Geneva 23, Switzerland.
  • Widmann E Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria.
  • Yzombard P Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany.
  • Zimmer C Physics Department, CERN, 1211 Geneva 23, Switzerland.
  • Zmeskal J Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria.
  • Zurlo N INFN Pavia, via Bassi 6, 27100 Pavia, Italy.
Show more…
  • 2018-02-21
Published in:
  • Philosophical transactions. Series A, Mathematical, physical, and engineering sciences. - 2018
antihydrogen
antiprotons
positronium
positrons
English The efficient production of cold antihydrogen atoms in particle traps at CERN's Antiproton Decelerator has opened up the possibility of performing direct measurements of the Earth's gravitational acceleration on purely antimatter bodies. The goal of the AEgIS collaboration is to measure the value of g for antimatter using a pulsed source of cold antihydrogen and a Moiré deflectometer/Talbot-Lau interferometer. The same antihydrogen beam is also very well suited to measuring precisely the ground-state hyperfine splitting of the anti-atom. The antihydrogen formation mechanism chosen by AEgIS is resonant charge exchange between cold antiprotons and Rydberg positronium. A series of technical developments regarding positrons and positronium (Ps formation in a dedicated room-temperature target, spectroscopy of the n=1-3 and n=3-15 transitions in Ps, Ps formation in a target at 10 K inside the 1 T magnetic field of the experiment) as well as antiprotons (high-efficiency trapping of [Formula: see text], radial compression to sub-millimetre radii of mixed [Formula: see text] plasmas in 1 T field, high-efficiency transfer of [Formula: see text] to the antihydrogen production trap using an in-flight launch and recapture procedure) were successfully implemented. Two further critical steps that are germane mainly to charge exchange formation of antihydrogen-cooling of antiprotons and formation of a beam of antihydrogen-are being addressed in parallel. The coming of ELENA will allow, in the very near future, the number of trappable antiprotons to be increased by more than a factor of 50. For the antihydrogen production scheme chosen by AEgIS, this will be reflected in a corresponding increase of produced antihydrogen atoms, leading to a significant reduction of measurement times and providing a path towards high-precision measurements.This article is part of the Theo Murphy meeting issue 'Antiproton physics in the ELENA era'.
Language
  • English
Open access status
bronze
Identifiers
Persistent URL
https://susi.usi.ch/global/documents/257498
Statistics
Document views: 16 File downloads:
  • fulltext.pdf: 0