Title :
Postacceleration of Laser-Generated High-Energy Protons Through Conventional Accelerator Linacs
Author :
Antici, Patrizio ; Fazi, Mauro ; Lombardi, Augusto ; Migliorati, Mauro ; Palumbo, Luigi ; Audebert, Patrick ; Fuchs, Julien
Author_Institution :
Ecole Polytech., CNRS, Palaiseau
Abstract :
The postacceleration of laser-generated protons through conventional drift-tube linear accelerators (linacs) (DTLs) has been simulated with the particle-code PARMELA. The proton source is generated on the rear surface of a target irradiated by an high-intensity short-pulse (350 fs) laser and focused by a microlens that allows selecting collimated protons at 7 0.1 MeV with root-mean-square unnormalized transverse emittance of 0.180 mm mrad. The simulations show that protons can be accelerated by one DTL tank to more than 14 MeV with un normalized transverse-emittance growth of 8 and 22.6 in different transverse directions when considering a total proton charge of 0.112 mA. This first numerical study shows that coupling between laser-plasma accelerators with traditional accelerators is possible, allowing a luminosity gain for the final beam.
Keywords :
beam handling techniques; linear accelerators; plasma accelerators; plasma production by laser; plasma simulation; plasma sources; proton accelerators; proton sources; DTL; PARMELA; beam collimation; conventional drift-tube linear accelerators; high-energy protons; high-intensity short-pulse; laser-generation; laser-plasma accelerators; linacs; luminosity gain; microlens; numerical method; particle simulation; postacceleration; proton source; unnormalized transverse-emittance growth; Acceleration; Collimators; Lenses; Linear accelerators; Microoptics; Optical coupling; Particle accelerators; Particle beams; Proton accelerators; Surface emitting lasers; Drift-tube linear accelerator (linac) (DTL); hybrid accelerator; laser-accelerated proton beams; low-emittance beams;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2008.2001412
