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 irradi- ated by an high-intensity (1019 W · cm−2) 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 unnormalized 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 accel- erators is possible, allowing a luminosity gain for the final beam.
Postacceleration of laser-generated high-energy protons through conventional accelerator linacs / Antici, Patrizio; M., Fazi; A., Lombardi; Migliorati, Mauro; Palumbo, Luigi; P., Audebert; J., Fuchs. - In: IEEE TRANSACTIONS ON PLASMA SCIENCE. - ISSN 0093-3813. - STAMPA. - 36:4(2008), pp. 1843-1846. [10.1109/TPS.2008.2001412]
Postacceleration of laser-generated high-energy protons through conventional accelerator linacs
ANTICI, PATRIZIO;MIGLIORATI, Mauro;PALUMBO, Luigi;
2008
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 irradi- ated by an high-intensity (1019 W · cm−2) 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 unnormalized 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 accel- erators is possible, allowing a luminosity gain for the final beam.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.