Deflection of high energy channeled charged particles by elastically bent silicon single crystals

Gibson, W. M.; Kim, I.J.; Pisharody, M.; Salman, S.M.M.; Sun, C.; Wang, G.H.; Wijayawardana, R.; Forster, J.S.; Mitchell, I.V.; Nigmanov, T.; Tsyganov, E.; Baker, S.; Carrigan, Richard A.; Toohig, T.E.; Avdeichikov, V.V.; Ellison, J. A.; Siffert, P.

doi:10.1016/0168-583x(84)90154-x

Cited by 22 publications

(3 citation statements)

References 14 publications

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“…That novel use of bent crystals was proposed by Tsyganov in 1976 [27] and observed few years later [28,29]. Beam extraction through crystals was later investigated at IHEP [30], CERN [31] and Fermilab [32] where a beam extraction efficiency of 20-30% was reached. This showed that using crystals to steer particle beams was viable.…”

Section: Historical Overviewmentioning

confidence: 99%

Monte Carlo modeling of crystal channeling at high energies

Schoofs

Cerutti

Ferrari

et al. 2013

Nuclear Instruments and Methods in Physics Research Section B:

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Section: Historical Overviewmentioning

confidence: 99%

Monte Carlo modeling of crystal channeling at high energies

Schoofs

Cerutti

Ferrari

et al. 2013

Nuclear Instruments and Methods in Physics Research Section B:

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“…The usage of a crystal with R R c does not significantly lower the channeling efficiency. In fact, particles de-channeled at a crystal depth z are deflected by an angle θ z ≈z/R, thereby a measure of the rate of de-channeled particles as a function of the crystal depth can be inferred [21,25]. Moreover, a crystal with l l e allows one to distinguish the nuclear de-channeling length l n for positive particles, since the contribution of the second term in Eq.…”

mentioning

confidence: 99%

“…The electronic de-channeling length scales proportionally to the particle momentum [23] and was extensively measured for protons [13,24,25].…”

mentioning

confidence: 99%

Experimental evidence of independence of nuclear de-channeling length on the particle charge sign

et al. 2017

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Under coherent interactions, particles undergo correlated collisions with the crystal lattice and their motion result in confinement in the fields of atomic planes, i.e. particle channeling. Other than coherently interacting with the lattice, particles also suffer incoherent interactions with individual nuclei and may leave their bounded motion, i.e., they de-channel. The latter is the main limiting factor for applications of coherent interactions in crystal-assisted particle steering. We experimentally investigated the nature of dechanneling of 120 GeV/c e − and e + in a bent silicon crystal at H4-SPS external line at CERN. We found that while channeling efficiency differs significantly for e − (2 ± 2%) and e + (54 ± 2%), their nuclear de-channeling length is comparable, (0.6 ± 0.1) mm for e − and (0.7 ± 0.3) mm for e + . The experimental proof of the equality of the nuclear dechanneling length for positrons and electrons is interpreted in terms of similar dynamics undergone by the channeled particles in the field of nuclei irrespective of their charge.In the last decade, a significant boost to the research on particle-crystal interactions was provided by the fabrication of uniformly bent crystals [1] with thickness along the beam suitable for experiments at high-energy [2,3]. Measurements proved the capability of channeling for manipulation of positively [4] and negatively [5,6] charged particle beams from MeV [7] up to hundreds of GeV [8,9], and for the generation of intense electromagnetic radiation from sub-GeV [10,11] to hundreds-GeV electron beams [12]. Moreover, channeling effects were exploited for steering [13]

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On the Possibility of Beam Deflection at Charged Particle Channeling in Superlattices with Gradually Varying Composition

Rudko

1991

Phys. Stat. Sol. (a)

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Deflection of high energy channeled charged particles by elastically bent silicon single crystals

Cited by 22 publications

References 14 publications

Monte Carlo modeling of crystal channeling at high energies

Monte Carlo modeling of crystal channeling at high energies

Experimental evidence of independence of nuclear de-channeling length on the particle charge sign

On the Possibility of Beam Deflection at Charged Particle Channeling in Superlattices with Gradually Varying Composition

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