| Główna > CERN’s Linac4 cesiated surface H$^{-}$ source |
| Published Articles | |
| Title | CERN’s Linac4 cesiated surface H$^{-}$ source |
| Author(s) | Lettry, J (CERN) ; Aguglia, D (CERN) ; Bertolo, S (CERN) ; Briefi, S ; Butterworth, A (CERN) ; Coutron, Y (CERN) ; Dallocchio, A (CERN) ; David, N (CERN) ; Chaudet, E (CERN) ; Fantz, U ; Fink, D (CERN) ; Garlasche, M (CERN) ; Grudiev, A (CERN) ; Guida, R (CERN) ; Hansen, J (CERN) ; Haase, M (CERN) ; Hatayama, A ; Jones, A (CERN) ; Kalvas, T ; Koszar, I (CERN) ; Lallement, J -B (CERN) ; Lombardi, A (CERN) ; di Lorenzo, F (CERN) ; Machado, C (CERN) ; Mastrostefano, C (CERN) ; Mathot, S (CERN) ; Mattei, S (CERN) ; Moyret, P (CERN) ; Nishida, K ; O'Neil, M (CERN) ; Paoluzzi, M (CERN) ; Raich, U (CERN) ; Roncarolo, F (CERN) ; Scrivens, R (CERN) ; Steyaert, D (CERN) ; Thaus, N (CERN) ; Voulgarakis, G (CERN) |
| Publication | 2017 |
| In: | AIP Conf. Proc. 1869 (2017) 030002 |
| In: | 5th International Symposium on Negative Ions, Beams and Sources, Oxford, United Kingdom, 12 - 16 Sep 2016, pp.030002 |
| DOI | 10.1063/1.4995722 |
| Subject category | Accelerators and Storage Rings |
| Accelerator/Facility, Experiment | CERN LINAC4 |
| Abstract | 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$^{+}$). |