CERN’s Linac4 cesiated surface H− source
- Lettry, J.
- Aguglia, D.
- Bertolo, S.
- Briefi, S.
- Butterworth, A.
- Coutron, Y.
- Dallocchio, A.
- David, N.
- Chaudet, E.
- Fantz, U.
- Fink, D.
- Garlasche, M.
- Grudiev, A.
- Guida, R.
- Hansen, J.
- Haase, M.
- Hatayama, A.
- Jones, A.
- Kalvas, Taneli
- Koszar, I.
- Lallement, J.-B.
- Lombardi, A.
- Lorenzo, F. di
- Machado, C.
- Mastrostefano, C.
- Mathot, S.
- Mattei, S.
- Moyret, P.
- Nishida, K.
- O’Neil, M.
- Paoluzzi, M.
- Raich, U.
- Roncarolo, F.
- Scrivens, R.
- Steyaert, D.
- Thaus, N.
- Voulgarakis, G.
DOIAbstract
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+).peerReviewe
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