6533b85bfe1ef96bd12ba1f4
RESEARCH PRODUCT
Cooling and slowing of trapped antiprotons below 100 meV
Luis A. OrozcoT. A. TrainorGerald GabrielseH. KalinowskyW. KellsJ. HaasX. FeiR. L. Tjoelkersubject
Condensed Matter::Quantum GasesPhysicsAnnihilationEnergy distributionBuffer gasGeneral Physics and AstronomyElectronlaw.inventionNuclear physicsAntiprotonlawPhysics::Accelerator PhysicsHigh Energy Physics::ExperimentPhysics::Atomic PhysicsIon trapAtomic physicsNuclear ExperimentStorage ringElectron coolingdescription
Electron cooling of trapped antiprotons allows their storage at energies 10 million times lower than is available in any antiproton storage ring. More than 60 000 antiprotons with energies from 0 to 3000 eV are stored in an ion trap from a single pulse of 5.9-MeV antiprotons from LEAR. Trapped antiprotons maintain their initial energy distribution over a storage lifetime exceeding 50 h unless allowed to collide with a cold buffer gas of trapped electrons, where- upon they cool dramatically to 1 eV in tens of seconds. The cooled antiprotons can be stacked into a harmonic potential well suited for long-term storage and precision measurements.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1989-09-25 | Physical Review Letters |