AEgIS experiment commissioning at CERN

Krasnický, D.; Aghion, S.; Amsler, C.; Ariga, A.; Ariga, T.; Belov, A.S.; Bonomi, G.; Bräunig, P.; Brusa, R.S.; Bremer, J.; Burghart, G.; Cabaret, L.; Caccia, M.; Canali, C.; Caravita, R.; Castelli, F.; Cerchiari, G.; Cialdi, S.; Comparat, D.; Consolati, G.; Dassa, L.; Di Domizio, S.; Di Noto, L.; Doser, M.; Dudarev, A.; Ereditato, A.; Ferragut, R.; Fontana, A.; Genova, P.; Giammarchi, M.; Gligorova, A.; Gninenko, S.N.; Hogan, S.D.; Haider, S.; Jordan, E.; Jo̸rgensen, L.V.; Kaltenbacher, T.; Kawada, J.; Kellerbauer, A.; Kimura, M.; Lagomarsino, V.; Mariazzi, S.; Matveev, V.A.; Merkt, F.; Moia, F.; Nebbia, G.; Nédélec, P.; Oberthaler, M.K.; Pacifico, N.; Petráček, V.; Pistillo, C.; Prelz, F.; Prevedelli, M.; Regenfus, C.; Riccardi, C.; Ro̸hne, O.; Rotondi, A.; Sandaker, H.; Scampoli, P.; Storey, J.; Subieta Vasquez, M.A.; Špaček, M.; Testera, G.; Vaccarone, R.; Villa, F.; Zavatarelli, S.

doi:10.1063/1.4796070

The AEgIS Experiment is an international collaboration based at CERN whose aim is to perform the first direct measurement of the gravitational acceleration g of antihydrogen in the gravitational field of the Earth. Cold antihydrogen will be produced with a pulsed charge exchange reaction in a cylindrical Penning trap where antiprotons will be cooled to 100mK. The cold antihydrogen will be produced in an excited Rydberg state and subsequently formed into a beam. The deflection of the antihydrogen beam will be measured by using Moiré deflectometer gratings. After being approved in late 2008, AEgIS started taking data in a commissioning phase early 2012. This report presents an overview of the AEgIS experiment, describes its current status and shows the first measurements on antiproton catching and cooling in the 5 T Penning catching trap. We will also present details on the techniques needed for the 100mK antihydrogen production, such as pulsed positronium production and its excitation with lasers.

AEgIS experiment commissioning at CERN / D. Krasnický, S. Aghion, C. Amsler, A. Ariga, T. Ariga, A.S. Belov, G. Bonomi, P. Bräunig, R.S. Brusa, J. Bremer, G. Burghart, L. Cabaret, M. Caccia, C. Canali, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, L. Dassa, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, A. Ereditato, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, A. Gligorova, S.N. Gninenko, S.D. Hogan, S. Haider, E. Jordan, L.V. Jo̸rgensen, T. Kaltenbacher, J. Kawada, A. Kellerbauer, M. Kimura, V. Lagomarsino, S. Mariazzi, V.A. Matveev, F. Merkt, F. Moia, G. Nebbia, P. Nédélec, M.K. Oberthaler, N. Pacifico, V. Petráček, C. Pistillo, F. Prelz, M. Prevedelli, C. Regenfus, C. Riccardi, O. Ro̸hne, A. Rotondi, H. Sandaker, P. Scampoli, J. Storey, M.A. Subieta Vasquez, M. Špaček, G. Testera, R. Vaccarone, F. Villa, S. Zavatarelli - In: Non-neutral plasma physics VIII: 10. International workshop on non-neutral plasmas : Greifswald, Germany, 27-30 August 2012 / [a cura di] X. Sarasola , L. Schweikhard, T.S. Pedersen. - Melville : American institute of physics, 2013. - ISBN 9780735411449. - pp. 144-153 (( Intervento presentato al 10. convegno International workshop on non-neutral plasmas tenutosi a Greifswald (Germany) nel 2012 [10.1063/1.4796070].