6533b7d2fe1ef96bd125e9a6

RESEARCH PRODUCT

Deceleration of antiprotons from MeV to keV energies

H. Kalinowsky

subject

PhysicsNuclear and High Energy PhysicsLarge Hadron ColliderCyclotronTrappingMass ratioCondensed Matter PhysicsAtomic and Molecular Physics and Opticslaw.inventionNuclear physicsAntiproton beamPhysics::Plasma PhysicslawAntiprotonPhysics::Accelerator PhysicsPhysics::Atomic PhysicsPhysical and Theoretical ChemistryAtomic physicsNuclear ExperimentBeam (structure)FOIL method

description

Trapping of antiprotons for high precision measurements at the Low Energy Antiproton Ring (LEAR/CERN) requires the deceleration of the antiproton beam from typically 5.8 MeV energy down to 10 keV for final capture in standard Penning traps. Two methods, the degradation of the beam in thin foils and the deceleration of the beam in an inverse cyclotron are investigated so far. The foil technique was successfully demonstrated with trapping efficiencies up to a few 10−4 and is now routinely used in the high precision measurement of the antiprotonproton mass ratio. The degradation foil method is compared with the deceleration technique using an inverse cyclotron tested also at LEAR.

https://doi.org/10.1007/bf02316707