Polarized Proton Beams from Laser-induced Plasmas
We report on the concept of an innovative source to produce polarized proton/deuteron beams of a kinetic energy up to several GeV from a laser-driven plasma accelerator. Spin effects have been implemented into the PIC simulation code VLPL to make theoretical predictions about the behavior of proton spins in laser-induced plasmas. Simulations of spin- polarized targets show that the polarization is conserved during the acceleration process. For the experimental realization, a polarized HCl gas-jet target is under construction using the fundamental wavelength of a Nd:YAG laser system to align the HCl bonds and simultaneously circular polarized light of the fifth harmonic to photo-dissociate, yielding nuclear polarized H atoms. Subsequently, their degree of polarization is measured with a Lamb-shift polarimeter. The final experiments, aiming at the first observation of a polarized particle beam from laser-generated plasmas, will be carried out at the 10 PW laser system SULF at SIOM/Shanghai.
Forschungszentrum Julich Peter Grunberg Institut
Institute for Theoretische Physik
IESL-FORTH and University of Crete, Department of Physics
IESL-FORTH and University of Crete
Hützen Anna,Büscher Markus,Thomas Johannes,Lehrach Andreas,Engels Ralf ,Pukhov Alexander ,Böker Jürgen,Rakitzis T. Peter , Sofikitis Dimitris,Gebel Ralf. Polarized Proton Beams from Laser-induced Plasmas[J].High Power Laser Science and Engineering,,():.