Controlling laser driven protons acceleration using a deformable mirror at a high repetition rate
Mar 1, 20185 pages
Published in:
- Nucl.Instrum.Meth.A 883 (2018) 191-195
- Published: Mar 1, 2018
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Abstract: (Elsevier)
We present results from a proof-of-principle experiment to optimize laser driven protons acceleration by directly feeding back its spectral information to a deformable mirror (DM) controlled by evolutionary algorithms (EAs). By irradiating a stable high-repetition rate tape driven target with ultra-intense pulses of intensities ∼ 10 20 W/ cm2 , we optimize the maximum energy of the accelerated protons with a stability of less than ∼ 5% fluctuations near optimum value. Moreover, due to spatio-temporal development of the sheath field, modulations in the spectrum are also observed. Particularly, a prominent narrow peak is observed with a spread of ∼ 15% (FWHM) at low energy part of the spectrum. These results are helpful to develop high repetition rate optimization techniques required for laser-driven ion accelerators.- Laser driven protons
- TNSA
- Deformable mirror
- Evolutionary algorithm
- High rep. rate
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