Experimental demonstration of dynamic focusing of a relativistic electron bunch by an overdense plasma lens

Hairapetian, G.; Davis, P.; Clayton, C. E.; Joshi, C.; Hartman, S.; Pellegrini, C.; Katsouleas, T.

doi:10.1103/physrevlett.72.2403

Cited by 70 publications

(36 citation statements)

References 15 publications

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“…Angeles [12] which confirm the theory of the beam-plasma interaction. All three experiments were limited to the overdense plasma lens regime (n p > n b ), with plasma electron densities of order 10 11 cm -3 to 10 13 cm -3 .…”

Section: Previous Plasma Lens Experimentssupporting

confidence: 73%

“…In principle, such strong fields are capable of focusing beams to very small spot sizes [2][3][4][5][6][7] and perhaps even capable of avoiding [8] the inherent (Oide) limitation [9] in discrete strong focusing. Several proof-of-principle experiments using low density particle beams have demonstrated plasma focusing [10][11][12]. Our goal is to demonstrate the effectiveness of plasma lenses in the parameter regime of interest for SLC and the next generation of high energy linear colliders.…”

Section: Introductionmentioning

confidence: 99%

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Plasma lens experiment at the final focus test beam

Chen¹,

Cline²,

Craddock³

et al. 1998

Nuclear Instruments and Methods in Physics Research Section A:

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Section: Previous Plasma Lens Experimentssupporting

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Plasma lens experiment at the final focus test beam

Chen¹,

Cline²,

Craddock³

et al. 1998

Nuclear Instruments and Methods in Physics Research Section A:

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“…Integrals with the products of the Bessel function, which enter in (17), are impossible in general to calculate analytically. But it is possible to carry out the approximate calculations for the case of small and large values of the arguments of the Bessel function.…”

Section: Model With Strong External Longitudinal Magnetic Fieldmentioning

confidence: 99%

“…7) f~b == 2 Yen;;~andforUCLAexperimenty == 7.5, 1~7.5cmandG~100G/cm, f~18 em which practically coincides with obtained experimental value. 17 For the FFTB experiment we get G~0 due to the factors 1/y2 and exp(-(k p O')2 /2) entered in the expression (12). The short bunches kpO' « 1 were used in the KEK-Tokyo University experiment and the field gradient G from (13) is equal G~2.4 kG/cm for conditions of this experiment.…”

Section: Fr~-2(2n) Mvowp-2: Sin(kpizi)mentioning

confidence: 99%

Focusing in different models of cold overdense plasma-electron bunch system

Amatuni¹,

Elbakian²,

Khachatryan³

et al. 1995

AIP Conference Proceedings

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Focusing of relativistic electron (positron) bunches is considered in three different descriptions of cold overdense plasma-rigid electron bunch system. In all three models Coulomb component of field exists but for large values of the bunch Lorentz-factor it is negligible in comparison with the wake field component. Total charge and current densities in general are not compensated. For narrow bunches they are nearly proportional to each other. The resulting focusing force is a complex combination of magnetic and electric forces, whose relative strength depends on bunch parameters. The obtained results in case of narrow bunches are practically independent from the considered models. The general formulae for focusing force are obtained, which can be used for estimates in the planned experiments. Particular cases of narrow, shortand long bunches are discussed and focusing gradients are calculated for the experiments performed at ANL, Tokyo University-KEK and UCLA.

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“…In an overdense plasma lens where n p n b , the space charge of the electron beam is fully neutralized by the plasma through the displacement of plasma electrons by the beam electrons, resulting in beam self-focusing through its own magnetic field [13][14][15][16][17]. In the underdense lens, where n p < ∼ n b , all plasma electrons are displaced by the beam electrons, and the focusing force is due to the remaining plasma ions [11,18].…”

Section: Introductionmentioning

confidence: 99%

The quantum plasma lens concept: A preliminary investigation

et al. 2013

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Recently, a theoretical investigation of the collective and nonlocal quantum effects has been carried out within the framework of a quantum approach to the relativistic charged particle beam travelling in a cold, collisionless, strongly magnetized plasma. This has been done taking into account both the plasma wake field excitation and the quantum paraxial approximation. On the basis of this theory, here we carry out a preliminary study of the transverse effects experienced by a cold relativistic beam through a thin plasma slab (plasma lens). In the strongly nonlocal regime, in which the beam experiences a very strong focusing effect, the scheme of plasma lens is reviewed in terms of the wave description provided by the above quantum theory.

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Experimental demonstration of dynamic focusing of a relativistic electron bunch by an overdense plasma lens

Cited by 70 publications

References 15 publications

Plasma lens experiment at the final focus test beam

Plasma lens experiment at the final focus test beam

Focusing in different models of cold overdense plasma-electron bunch system

The quantum plasma lens concept: A preliminary investigation

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