Impact Factor:0.0
DOI number:10.1103/PhysRevAccelBeams.27.041303
Journal:PHYSICAL REVIEW ACCELERATORS AND BEAMS
Abstract:With the rapid development of high-gradient laser plasma acceleration, implementing it in practical applications has become a priority. However, to go from “acceleration” to “accelerator,” a beam line system is required to accurately control the beam parameters according to different irradiation requirements. The
laser-accelerated proton beam is characterized by a micron-scale original source size and a small emittance as low as 0.004 mm mrad [T. E. Cowan et al., Phys. Rev. Lett. 92, 204801 (2004)]. However, due to the broad energy spread and large divergence, its initial ultralow emittance will increase rapidly in the subsequent transmission process. This indicates that designing a beamline for laser-driven protons is challenging and differs significantly from that of a conventional accelerator. As a fundamental parameter
for beam line design, we have theoretically derived the emittance growth law for laser-driven protons in both drift space and in a focusing element. The results demonstrate that the beam emittance deteriorates sharply with the energy spread and the square of the divergence angle. These theoretical calculations have
been verified both in experiments and simulations. This work is helpful for designing subsequent beam lines that pursue high transmission efficiency and achromatic ability.
Indexed by:Journal paper
Discipline:Engineering
First-Level Discipline:Nuclear Science and Technology
Volume:27
Issue:041303
Translation or Not:no
Date of Publication:2024-04-22
Included Journals:SCI
Date of Publication:2024-04-22