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.

Probability of inelastic nuclear interactions of high-energy protons in a bent crystal

BAGLI, Enrico;BARICORDI, Stefano;DALPIAZ, Pietro;FIORINI, Massimiliano;GUIDI, Vincenzo;MAZZOLARI, Andrea;VINCENZI, Donato;
2010

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.
W., Scandale; R., Losito; M., Silari; Bagli, Enrico; Baricordi, Stefano; Dalpiaz, Pietro; Fiorini, Massimiliano; Guidi, Vincenzo; Mazzolari, Andrea; Vincenzi, Donato; R., Milan; Gianantonio Della, Mea; E., Vallazza; A. G., Afonin; Chesnokov, Y. u. A.; V. A., Maisheev; I. A., Yazynin; S. V., Afanasiev; A. D., Kovalenko; A. M., Taratin; V. V., Uzhinsky; A. S., Denisov; Gavrikov, Y. u. A.; Ivanov, Y. u. M.; L. P., Lapina; L. G., Malyarenko; V. V., Skorobogatov; V. M., Suvorov; S. A., Vavilov; D., Bolognini; S., Hasan; M., Prest
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11392/1400504
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