6533b7d7fe1ef96bd12686e4

RESEARCH PRODUCT

A linear radiofrequency quadrupole ion trap for the cooling and bunching of radioactive ion beams

S. SchwarzJ. DillingS. HenryG. SiklerH.-j. KlugeJ. SzerypoAlban KellerbauerAlban KellerbauerF. HerfurthGeorg BollenR. B. MooreC. ScheidenbergerEmily Lamour

subject

PhysicsNuclear and High Energy PhysicsIon beam010308 nuclear & particles physics[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]Ion gunAccelerators and Storage Rings01 natural sciences7. Clean energyISOLTRAPNuclear physicsIon beam deposition0103 physical sciencesPhysics::Accelerator PhysicsIon trapAtomic physicsQuadrupole ion trapBeam emittanceNuclear Experiment010306 general physicsBeam (structure)

description

A linear radiofrequency quadrupole ion guide and beam buncher has been installed at the ISOLTRAP mass spectrometry experiment at the ISOLDE facility at CERN. The apparatus is being used as a beam cooling, accumulation, and bunching system. It operates with a buffer gas that cools the injected ions and converts the quasicontinuous 60- keV beam from the ISOLDE facility to 2.5-keV beam pulses with improved normalized transverse emittance. Recent measurements suggest a capture efficiency of the ion guide of up to 40% and a cooling and bunching efficiency of at least 12% which is expected to still be increased. The improved ISOLTRAP setup has so far been used very successfully in three on-line experiments. (12 refs).

https://doi.org/10.1016/s0375-9474(01)01645-1