6533b85cfe1ef96bd12bc9db

RESEARCH PRODUCT

The REX-ISOLDE project

A. SchemppGeorg BollenOliver KesterH. Raimbault-hartmannH.l. RavnDietrich HabsG. HindererRoland RepnowDirk SchwalmK.-g. RensfeltR. Von HahnEckehart NolteL. LiljebyUlrich RatzingerK. Rudolph

subject

PhysicsLarge Hadron ColliderMass-to-charge ratioNuclear TheoryParticle acceleratorCoulomb excitationPenning trapLinear particle acceleratorIon sourceIonlaw.inventionNuclear physicsRadio-frequency quadrupolelawCathode rayPhysics::Accelerator PhysicsNeutronBeam emittanceAtomic physicsNuclear Experiment

description

REX-ISOLDE is a pilot experiment at ISOLDE/CERN to study the structure of neutron-rich nuclei (N=20, N=28) with post-accelerated radioactive ion beams (1). Therefore radioactive ions with charge state 1+, which are delivered by the online mass separator ISOLDE, are accelerated up to 2.2 MeV/u by means of a new concept. The radioactive ions are first accumulated in a Penning trap, then charge breeded to a charge-to-mass ratio of 1/4.5 in an Electron Beam Ion Source (EBIS) and finally accelerated. The LINAC consists of three components, namely a Radio Frequency Quadrupole (RFQ) accelerator, which accelerates the ions from 5 to 300 keV/u, an interdigital H-type structure (IH) with a final energy between 1.1 and 1.2 MeV/u and three seven gap resonators, which allow to vary the final energy between 0.8 and 2.2 MeV/u. Pulsing of the EBIS high voltage platform allows deceleration of the ions from the trap, which leads to a rather low injection energy of the RFQ. Thus a more efficient, adiabatic bunching and bett...

yearjournalcountryeditionlanguage
2002-11-22Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167)
https://doi.org/10.1109/pac.1997.749890