Linac4 H− ion sources

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...

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Detalles Bibliográficos
Autores principales: Lettry, J, Aguglia, D, Alessi, J, Andersson, P, Bertolo, S, Briefi, S, Butterworth, A, Coutron, Y, Dallocchio, A, David, N, Chaudet, E, Faircloth, D, Fantz, U, Fink, D A, Garlasche, M, Grudiev, A, Guida, R, Hansen, J, Haase, M, Hatayama, A, Jones, A, Koszar, I, Lallement, J B, Lombardi, A M, Machado, C, Mastrostefano, C, Mathot, S, Mattei, S, Moyret, P, Nisbet, D, Nishida, K, O'Neil, M, Paoluzzi, M, Scrivens, R, Shibata, T, Steyaert, D, Thaus, N, Voulgarakis, G
Lenguaje:eng
Publicado: 2015
Materias:
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.1063/1.4936120
http://cds.cern.ch/record/2269070
Descripción
Sumario: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 sourceoptics, 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.

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