6533b860fe1ef96bd12c2f86

RESEARCH PRODUCT

CERN’s Linac4 cesiated surface H− source

M. PaoluzziD. SteyaertN. DavidSerge MathotStefan BriefiM. HaaseD. FinkAlessandra LombardiDavide AgugliaMarco GarlaschèC. MachadoN. ThausM. O'neilR. ScrivensI. KoszarRoberto GuidaS. MatteiUrsel FantzAlessandro DallocchioJ. D. HansenA. JonesAlexej GrudievG. VoulgarakisE. ChaudetAkiyoshi HatayamaF. Di LorenzoY. CoutronP. MoyretSebastien BertoloU. RaichTaneli KalvasK. NishidaJ. LettryFederico RoncaroloA. ButterworthJean-baptiste LallementCristiano Mastrostefano

subject

Nuclear physicsLarge Hadron ColliderMaterials scienceion sourcesProtonta114ApertureThermal emittanceAtomic physicsH- ionsIon sourceBeam (structure)

description

Linac4 cesiated surface H− sources are routinely operated for the commissioning of the CERN’s Linac4 and on an ion source test stand. Stable current of 40-50 mA are achieved but the transmission through the LEBT of 80% was below expectations and triggered additional beam simulation and characterization. The H− beam profile is not Gaussian and emittance measurements are larger than simulation. The status of ongoing development work is described; 36 mA H− and 20 mA D− beams were produced with a 5.5 mm aperture cesiated surface ion source. The emittances measured at the test stand are presented. During a preliminary test, the Linac4 proton source delivered a total beam intensity of 70 mA (p, H2+, H3+). peerReviewed

yearjournalcountryeditionlanguage
2017-01-01
10.1063/1.4995722https://doi.org/10.1063/1.4995722