CERN Accelerating science

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1.
Detection of antihydrogen annihilations with a Si-micro-strip and pure CsI detector / Johnson, I. (Zurich U.) ; Amoretti, M. (INFN, Genoa) ; Amsler, C. (Zurich U.) ; Bazzano, G. (INFN, Pavia ; Pavia U.) ; Bonomi, G. (CERN) ; Bouchta, A. (CERN) ; Bowe, P. (Aarhus U.) ; Carraro, C. (INFN, Genoa ; Genoa U.) ; Cesar, C. L. (Rio de Janeiro Federal U.) ; Charlton, M. (Swansea U.) et al.
In 2002, the ATHENA collaboration reported the creation and detection of cold (~15 K) antihydrogen atoms [1]. The observation was based on the complete reconstruction of antihydrogen annihilations, simultaneous and spatially correlated annihilations of an antiproton and a positron. [...]
physics/0401034.- Geneva : CERN, 2004 - 7 p. - Published in : 10.1142/9789812702708_0069 Access to fulltext document: PDF; Fulltext: PDF; External link: Electronic Version from a server
In : 8th Conference on Astroparticle, Particle, Space Physics, Detectors and Medical Physics Applications, Como, Italy, 6 - 11 Oct 2003, pp.e-proceedings
2.
The ATHENA experiment for the study of antihydrogen / Amsler, C (Bern U., LHEP) ; Bonomi, G (INFM, Brescia) ; Fontana, A (INFN, Pavia) ; Kellerbauer, A (INFN, Genoa) ; Lagomarsino, V (INFN, Genoa) ; Lodi Rizzini, E (Brescia U.) ; Rotondi, A (INFN, Genoa) ; Testera, G (INFN, Genoa) ; Venturelli, L (Brescia U.) ; Zurlo, N (Brescia U.)
In 2002, the ATHENA experiment was the first to produce large amounts of antihydrogen atoms at the CERN Antiproton Decelerator (AD). In this review article, we collect and discuss all the relevant results of the experiment: antiproton and positron cooling and their recombination dynamics in the nested Penning trap, the methods used to unambiguously identify the antiatoms as well as the protonium background, the dependence of the antihydrogen formation on mixing time and temperature. [...]
2014 - 75 p. - Published in : Int. J. Mod. Phys. A 29 (2014) 1430035
3.
Cold Antihydrogen at ATHENA : Experimental Observation and Beyond / ATHENA Collaboration
2005 - Published in : AIP Conf. Proc. 770 (2005) 33-40
In : 19th International Conference on Atomic Physics, Rio de Janeiro, Brazil, 25 - 30 Jul 2004, pp.33-40
4.
Producing Slow Antihydrogen for a Test of CPT Symmetry with ATHENA / ATHENA Collaboration
The ATHENA experiment at the Antiproton Decelerator facility at CERN aims at testing CPT symmetry with antihydrogen. An overview of the experiment, together with preliminary results of development towards the production of slow antihydrogen are reported..
nucl-ex/0202020; CERN-EP-2001-084; CERN-EP-2001-084.- Geneva : CERN, 2001 - 7 p. - Published in : Hyperfine Interact. 138 (2001) 153-8 Fulltext: PDF; Preprint: PDF; External link: Preprint
In : International RIKEN Conference on Muon Catalyzed Fusion and Related Exotic Atoms, Shimoda, Japan, 22 - 26 Apr 2001, pp.153-8 - CERN library copies
5.

CERN-EX-0208001
© 2002-2024 CERN (License: CC-BY-4.0)
ATHENA: an actual antihydrogen annihilation
Annihilation d'un atome d'antihydrogène observé par le détecteur ATHENA en 2002

This is an image of an actual matter-antimatter an [...]
01 Aug 2002
6.
Production of Cold Antihydrogen with ATHENA for Fundamental Studies / ATHENA Collaboration
Since the beginning of operations of the CERN Antiproton Decelerator in July 2000, the successful deceleration, storage and manipulation of antiprotons has led to remarkable progress in the production of antimatter. The ATHENA Collaboration were the first to create and detect cold antihydrogen in 2002, and we can today produce large enough amounts of antiatoms to study their properties as well as the parameters that govern their production rate..
hep-ex/0406074.- Geneva : CERN, 2004 - 8 p. - Published in : , pp. 385-392 Access to fulltext document: PDF; Fulltext: arXiv:hep-ex_0406074 - PDF; Pages_from_C04-03-21_385 - PDF; External links: hep-ex/0406074 PDF; Preprint
In : 39th Rencontres de Moriond, La Thuile, Italy, 21 - 28 Mar 2004, pp.385-392
7.
Production of Slow Protonium in Vacuum / Zurlo, N. (Brescia U.) ; Lodi Rizzini, E. (Brescia U.) ; Venturelli, L. (Brescia U.) ; Amoretti, Marco (INFN, Genoa) ; Macri, M. (INFN, Genoa) ; Testera, G. (INFN, Genoa) ; Variola, A. (INFN, Genoa) ; Amsler, Claude (Zurich U.) ; Pruys, H. (Zurich U.) ; Regenfus, Christian (Zurich U.) et al.
We describe how protonium, the quasi-stable antiproton-proton bound system, has been synthesized following the interaction of antiprotons with the molecular ion H$_2^+$ in a nested Penning trap environment. From a careful analysis of the spatial distributions of antiproton annihilation events in the ATHENA experiment, evidence is presented for protonium production with sub-eV kinetic energies in states around $n$ = 70, with low angular momenta. [...]
arXiv:0801.3193.- 2006 - 9 p. - Published in : Hyperfine Interact. 172 (2006) 97-105 Fulltext: PDF; External link: Fulltext
In : 4th International Conference on Trapped Charged Particles and Fundamental Physics, Parksville, Canada, 3 - 8 Sep 2006, pp.97-105
8.
Results from ATHENA / Rotondi, Alberto (INFN, Pavia ; Pavia U.) ; Amoretti, A (INFN, Genoa) ; Amsler, C (Zurich U.) ; Bonomi, G (CERN) ; Bowe, P D (Aarhus U.) ; Canali, C (INFN, Genoa ; Genoa U.) ; Carraro, C (INFN, Genoa ; Genoa U.) ; Cesar, C L (Rio de Janeiro Federal U.) ; Charlton, M (Swansea U.) ; Doser, Michael (CERN) et al.
CERN-SPSC-2006-007; SPSC-SR-003.- Geneva : CERN, 2005 SR - Published in : AIP Conf. Proc. 796 (2005) 285-290 Access to fulltext document: PDF; External link: Published version from AIP
In : International Conference on Low Energy Antiproton Physics, Bonn, Germany, 16 - 22 May 2005, pp.285-290
9.
Three Dimensional Annihilation Imaging of Antiprotons in a Penning Trap / Fujiwara, M.C. (Tokyo U. ; Wako, RIKEN) ; Amoretti, M. (INFN, Genoa) ; Bonomi, G. (CERN) ; Bouchta, A. (CERN) ; Bowe, P.D. (Aarhus U.) ; Carraro, C. (INFN, Genoa ; Genoa U.) ; Cesar, C.L. (Rio de Janeiro Federal U.) ; Charlton, M. (Swansea U.) ; Doser, M. (CERN) ; Filippin, V. (INFN, Pavia) et al.
We demonstrate three-dimensional annihilation imaging of antiprotons trapped in a Penning trap. Exploiting unusual feature of antiparticles, we investigate a previously unexplored regime in particle transport: the proximity of the trap wall. [...]
physics/0401162.- 2003-11-26 - 9 p. - Published in : AIP Conf. Proc.: 692 (2003) , pp. 131-139 Fulltext: PDF; External link: physics/0401162 PDF
In : Workshop on Non-Neutral Plasmas, Santa Fe, NM, USA, 7 - 11 Jul 2003, pp.131-139
10.
Temporally Controlled Modulation of Antihydrogen Production and the Temperature Scaling of Antiproton-Positron Recombination / ATHENA Collaboration
2008 - Published in : Phys. Rev. Lett. 101 (2008) 053401 APS Published version, local copy: PDF;

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