Linac4 H- ion sources

J. Lettry, D. Aguglia, J. Alessi, P. Andersson, S. Bertolo, S. Briefi, A. Butterworth, Y. Coutron, A. Dallocchio, N. David, E. Chaudet, D. Faircloth, U. Fantz, D. A. Fink, M. Garlasche, A. Grudiev, R. Guida, J. Hansen, M. Haase, A. HatayamaA. Jones, I. Koszar, J. B. Lallement, A. M. Lombardi, C. Machado, C. Mastrostefano, S. Mathot, S. Mattei, P. Moyret, D. Nisbet, K. Nishida, M. O'Neil, M. Paoluzzi, R. Scrivens, T. Shibata, D. Steyaert, N. Thaus, G. Voulgarakis

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


CERN's 160 MeV H- linear accelerator (Linac4) is a key constituent of the injector chain upgrade of the Large Hadron Collider that is being installed and commissioned. A cesiated surface ion source prototype is being tested and has delivered a beam intensity of 45 mA within an emittance of 0.3 π mm mrad. The optimum ratio of the co-extracted electron- to ion-current is below 1 and the best production efficiency, defined as the ratio of the beam current to the 2 MHz RF-power transmitted to the plasma, reached 1.1 mA/kW. The H- source prototype and the first tests of the new ion source optics, electron-dump, and front end developed to minimize the beam emittance are presented. A temperature regulated magnetron H- source developed by the Brookhaven National Laboratory was built at CERN. The first tests of the magnetron operated at 0.8 Hz repetition rate are described.

Original languageEnglish
Article number02B139
JournalReview of Scientific Instruments
Issue number2
Publication statusPublished - 2016 Feb 1

ASJC Scopus subject areas

  • Instrumentation


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