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Numerical study of a linear accelerator using laser-generated proton beams as a source
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Image of FIG. 1.
FIG. 1.

Possible mechanisms leading to the acceleration of protons from a solid target by an ultraintense laser.

Image of FIG. 2.
FIG. 2.

Scheme of a DTL cell showing the lattice structure parameters that have been used in the present study (Ref. 18).

Image of FIG. 3.
FIG. 3.

Global scheme of the hybrid accelerator, showing the sizes of the source and the focusing and the accelerating sections.

Image of FIG. 4.
FIG. 4.

(a) Beam envelopes and for the drift-focusing section. A beam size increase can be seen in the free space drift section just after the proton source, i.e., before reaching the focusing section after 60 cm of propagation. The quadrupoles focus the beam initially in the direction then in the direction. (b) Un-normalized emittance in the two directions.

Image of FIG. 5.
FIG. 5.

Results of the PARMELA simulation for the hybrid accelerator and without considering space charge effects: (a) the proton energy, (b) the un-normalized rms emittance, (c) the normalized rms emittance, (d) the longitudinal bunch length, (e) the transverse beam size, and (f) the energy spread.

Image of FIG. 6.
FIG. 6.

Results of relevant PARMELA simulations considering different proton beam currents: without space charge effects, with an input current of 0.112 mA, with a current of 0.66 mA, and with a current of 1.12 mA.


Generic image for table
Table I.

Cell parameters of the DTL tank.

Generic image for table
Table II.

Basic parameters of the DTL tank cells.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Numerical study of a linear accelerator using laser-generated proton beams as a source