6533b7dcfe1ef96bd127172e

RESEARCH PRODUCT

Advances in surface ion suppression from RILIS: Towards the Time-of-Flight Laser Ion Source (ToF-LIS)

Richard CatherallB. A. MarshRalf Erik RosselRalf Erik RosselRalf Erik RosselV. N. FedosseevSebastian RotheB. CrepieuxJ.p. RamosJ.p. RamosT. Day GoodacreT. Day GoodacreT. Giles

subject

Nuclear and High Energy PhysicsIon source developmentIon beamIon suppression in liquid chromatography–mass spectrometry01 natural sciencesISOLDElaw.inventionIonIon beam depositionlaw0103 physical sciencesDetectors and Experimental Techniques010306 general physicsInstrumentation010302 applied physicsRILISResonance laser ionizationbusiness.industryChemistryLaserIon sourceTime of flightOptoelectronicsPhysics::Accelerator PhysicsAtomic physicsbusinessBeam (structure)

description

Abstract We present results from the development towards the Time-of-Flight Laser Ion Source (ToF-LIS) aiming for the suppression of isobaric contaminants through fast beam gating. The capability to characterize high resistance ion sources has been successfully demonstrated. A ninefold selectivity gain has been achieved through suppression of surface ionized potassium, while maintaining >90% transmission for laser-ionized gallium using a thin wall graphite ionizer cavity combined with a fast beam gate. Initial results from the investigation of glassy carbon as a potential hot cavity ion source are presented. Power-cycle tests of a newly designed mount for fragile ion source cavities indicates its capability to survive the thermal stress expected during operation in an ISOLDE target unit. Finally, we introduce fast ion beam switching at a rate of 10 kHz using the ISOLDE ion beam switchyard as a new concept for ion beam distribution and conclude by highlighting the potential applications of this ion beam multiplexing technique.

yearjournalcountryeditionlanguage
2016-06-01
10.1016/j.nimb.2016.02.060http://cds.cern.ch/record/2241290