Observation of Fine Structure in Channeling of Particles in Bent Crystals.
/ Authors
A. Mazzolari, H. Backe, L. Bandiera, N. Canale, D. De Salvador, P. Drexler, V. Guidi, P. Klag, W. Lauth, L. Malagutti
and 7 more authors
R. Negrello, G. Paternò, M. Romagnoni, F. Sgarbossa, A. Sytov, V. Tikhomirov, D. Valzani
/ Abstract
We observed highly efficient manipulation of the 530 MeV positron beam at Mainz Microtron via bent crystals. The low beam divergence revealed a fine structure in the angular distribution of channeled particles. A compact analytical model, supported by Monte Carlo methods including multiple scattering, accounts for the measurements. We established a criterion for designing a crystal with reduced angular spread of channeled particles for beam manipulation at any energy. This finding is particularly useful in view of applications of channeling to the highest energies.
Journal: Physical review letters
DOI: 10.1103/t4ms-hmdd