Comparative results on the deflection of positively and negatively charged particles by multiple volume reflections in a multi-strip silicon deflector

• Published in: JETP letters Vol. 101; no. 10; pp. 679 - 684
• Main Authors: Scandale, W., Arduini, G., Butcher, M., Cerutti, F., Garattini, M., Gilardoni, S., Lechner, A., Losito, R., Masi, A., Mereghetti, A., Metral, E., Mirarchi, D., Montesano, S., Redaelli, S., Rossi, R., Schoofs, P., Smirnov, G., Bagli, E., Bandiera, L., Baricordi, S., Dalpiaz, P., Germogli, G., Guidi, V., Mazzolari, A., Vincenzi, D., Claps, G., Dabagov, S., Hampai, D., Murtas, F., Cavoto, G., Iacoangeli, F., Ludovici, L., Santacesaria, R., Valente, P., Galluccio, F., Afonin, A. G., Chesnokov, Yu. A., Durum, A. A., Maisheev, V. A., Sandomirskiy, Yu. E., Yanovich, A. A., Kovalenko, A. D., Taratin, A. M., Gavrikov, Yu. A., Ivanov, Yu. M., Lapina, L. P., Ferguson, W., Fulcher, J., Hall, G., Pesaresi, M., Raymond, M., Bolognini, D., Hasan, S., Prest, M., Vallazza, E.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.05.2015
• Subjects: Atomic; Biological and Medical Physics; Biophysics; Fields; Molecular; Nuclei; Optical and Plasma Physics; Particle and Nuclear Physics; Particles; Physics; Physics and Astronomy; Quantum Information Technology; Solid State Physics; Spintronics; JETP Letter; Proton Beam; Negative Particle; Negative Pion; Reflection Angle
• ISSN: 0021-3640; 1090-6487
• DOI: 10.1134/S0021364015100124

Bent silicon crystals in channeling mode are already used for beam extraction and collimation in particle accelerators. Volume reflection of beam particles is more efficient than beam channeling; however, the mean deflection angle is rather small. An experiment on the deflection of a 400 GeV/ c proton beam and a 150 GeV/ c π − beam at CERN using a multi-strip silicon deflector in reflection mode is described. The mean deflection angle of beam particles has been considerably increased due to sequential volume reflections realized in the deflector. This gives possibility for a successful usage of the multi-strip deflectors for beam collimation in high-energy accelerators.