Volume reflection of 70 GeV proton beam from bent (111) atomic planes of silicon was observed in experiment devoted to the study of channeling in very short bent crystals. This phenomenon was predicted by A.M.Taratin and S.A.Vorobiev in 1987. Volume reflection is resulted from coherent interaction of incident protons with crystal lattice in tangency point of proton trajectories with bent atomic planes and has the same nature as channeling. Average deflection angle of reflected protons was found to be equal to 1.6 times the critical angle for channeling. The study fulfilled makes possible to develop new approach to crystal deflectors for high energy particle beams based on volume reflection phenomenon.
Volume reflection of a proton beam in a bent crystal
GUIDI, Vincenzo;
2006
Abstract
Volume reflection of 70 GeV proton beam from bent (111) atomic planes of silicon was observed in experiment devoted to the study of channeling in very short bent crystals. This phenomenon was predicted by A.M.Taratin and S.A.Vorobiev in 1987. Volume reflection is resulted from coherent interaction of incident protons with crystal lattice in tangency point of proton trajectories with bent atomic planes and has the same nature as channeling. Average deflection angle of reflected protons was found to be equal to 1.6 times the critical angle for channeling. The study fulfilled makes possible to develop new approach to crystal deflectors for high energy particle beams based on volume reflection phenomenon.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
