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First results of a new positron-accumulation scheme using an electron linac and a Penning-Malmberg trap

P. Grandemange 1 P. Comini P. Debu P. Dupre 2 L. Liszkay D. Lunney 2 P. Perez J. A. Rey J. M. Reymond N. Ruiz Y. Sacquin B. Vallage
1 CSNSM SNO
CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière : UMR8609
Abstract : 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 ((g) over bar) of antihydrogen atoms in free fall. Its originality is to produce (H) over bar (+) 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.
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Submitted on : Monday, August 25, 2014 - 5:44:32 PM
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P. Grandemange, P. Comini, P. Debu, P. Dupre, L. Liszkay, et al.. First results of a new positron-accumulation scheme using an electron linac and a Penning-Malmberg trap. 13th International Workshop on Slow Positron Beam Techniques and Applications (SLOPOS), 2013, Munich, Germany. pp.012035, ⟨10.1088/1742-6596/505/1/012035⟩. ⟨in2p3-01057989⟩

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