First results on proton extraction from the CERN-SPS with a bent crystal

• Published in: Physics letters. B Vol. 313; no. 3; pp. 491 - 497
• Main Authors: Akbari, H., Altuna, X., Bardin, S., Bellazzini, R., Biryukov, V., Brez, A., Bussa, M.P., Busso, L., Calcaterra, A., Carboni, G., Costantini, F., De Sangro, R., Elsener, K., Ferioli, F., Ferrari, A., Ferri, G.P., Ferroni, F., Fidecaro, G., Freund, A., Guinand, R., Gyr, M., Herr, W., Hilaire, A., Jensen, B.N., Klem, J., Lanceri, L., Maier, K., Massai, M.M., Mertens, V., Møller, S.P., Morganti, S., Palamara, O., Peraire, S., Petrera, S., Placidi, M., Santacesaria, R., Scandale, W., Schmidt, R., Taratin, A.M., Tosello, F., Uggerhøj, E., Vettermann, B., Vita, P.F., Vuagnin, G., Weisse, E., Weisz, S.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 02.09.1993; Elsevier Science
• Subjects: Exact sciences and technology; Hadron-induced high- and super-high-energy interactions (energy > 10 gev); Physics; Specific reactions and phenomenology; The physics of elementary particles and fields; Proton; Extraction; Simulation; High energy; Crystals
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/0370-2693(93)90024-C

The feasibility of extracting protons from the halo of a high energy beam by means of a bent silicon crystal has been investigated. Protons diffusing from a GeV beam circulating in the SPS at CERN have been extracted at an angle of 8.5 mrad. Efficiencies of abour 10 percent, orders of magnitude higher than the values achieved previously, have been measured. The present results are promising in view of beam extraction from future multi-TeV proton accelerators.