Akademska digitalna zbirka SLovenije - logo
E-resources
Peer reviewed Open access
  • First results of a new posi...
    Grandemange, P; Comini, P; Debu, P; Dupré, P; Liszkay, L; Lunney, D; Pérez, P; Rey, J-M; Reymond, J-M; Ruiz, N; Sacquin, Y; Vallage, B

    Journal of physics. Conference series, 01/2014, Volume: 505, Issue: 1
    Journal Article

    The Gravitational Behaviour of Antihydrogen at Rest experiment - GBAR - is designed to perform a direct measurement of the weak equivalence principle on antimatter by measuring the acceleration ( ) of antihydrogen atoms in free fall. Its originality is to produce + ions and use sympathetic cooling to minimize the initial velocity. These ions are produced using charge exchange reactions with a dense positronium cloud, created by an intense pulse of electron-linac-produced positrons that are accumulated in a Penning-Malmberg trap.