Probability of inelastic nuclear interactions in a short bent silicon crystal for its orientations optimal for channeling and volume reflection was investigated using 400 GeV/c protons of the CERN SPS. The contribution of nuclear interactions from channeled protons was observed to be about 3–4% of the probability for the amorphous orientation. For the crystal orientation optimal for volume reflection the nuclear interaction probability of protons was a few percents larger than in the amorphous case. It was shown that in the limiting case of a quasi parallel beam realizing for the collider beam halo the inelastic nuclear losses should decrease by more than five times, which is an additional advantage of a crystal as a primary collimator for the LHC collimation system.
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Data di pubblicazione: | 2010 | |
Titolo: | Probability of inelastic nuclear interactions of high-energy protons in a bent crystal | |
Autori: | W. Scandale; R. Losito; M. Silari; E. Bagli; S. Baricordi; P. Dalpiaz; M. Fiorini; V. Guidi; A. Mazzolari; D. Vincenzi; R. Milan; Gianantonio Della Mea; E. Vallazza; A.G. Afonin; Yu.A. Chesnokov; V.A. Maisheev; I.A. Yazynin; S.V. Afanasiev; A.D. Kovalenko; A.M. Taratin; V.V. Uzhinsky; A.S. Denisov; Yu.A. Gavrikov; Yu.M. Ivanov; L.P. Lapina; L.G. Malyarenko; V.V. Skorobogatov; V.M. Suvorov; S.A. Vavilov; D. Bolognini; S. Hasan; M. Prest | |
Rivista: | NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION B, BEAM INTERACTIONS WITH MATERIALS AND ATOMS | |
Abstract: | Probability of inelastic nuclear interactions in a short bent silicon crystal for its orientations optimal for channeling and volume reflection was investigated using 400 GeV/c protons of the CERN SPS. The contribution of nuclear interactions from channeled protons was observed to be about 3–4% of the probability for the amorphous orientation. For the crystal orientation optimal for volume reflection the nuclear interaction probability of protons was a few percents larger than in the amorphous case. It was shown that in the limiting case of a quasi parallel beam realizing for the collider beam halo the inelastic nuclear losses should decrease by more than five times, which is an additional advantage of a crystal as a primary collimator for the LHC collimation system. | |
Digital Object Identifier (DOI): | 10.1016/j.nimb.2010.07.002 | |
Handle: | http://hdl.handle.net/11392/1400504 | |
Appare nelle tipologie: | 03.1 Articolo su rivista |