Sep 13 – 19, 2015
La Biodola, Isola d'Elba
Europe/Rome timezone

hybrid-code and PIC-code simulations for PWFA at SPARC_LAB

Sep 16, 2015, 4:00 PM
SB2 Sala Bonaparte 2 (Hotel Hermitage)

SB2 Sala Bonaparte 2

Hotel Hermitage

talk WG6 - Theory and simulations WG6 - Theory and simulations


Alberto Marocchino (ROMA1)


We present a possible working point for the Sparc_Lab LNF facility that preserve bunch quality: witness is positioned and shaped so to preserve, over the entire acceleration length, both emittance and energy spread. This configuration is characterised by a 200pC driver and a 20pC follower witness. The one driver plus one witness is extended to a COMB (train of bunches) configuration: 3 drivers plus a witness. Bunch characteristics are taken from recent Sparc_Lab experimental results. To obtain the effective working point we used, and we currently use, a combination of two codes: Architect, an hybrid fast-running code, and ALaDyn a full PIC-code. Both tools are necessary to fully understand the underlying physics and to quickly asses feasible working points. Architect is an hybrid code: bunches are treated kinetically while the background plasma is model as a cold fluid. The following approach allow to greatly reduce run time, a few hours, without loss of generality. We wish to point out that Architect is designed not to give qualitative solutions; Architect well predicts solutions up to the weakly-non-linear regimes, well reproducing the bubble-wake profile.

Primary authors

Alberto Marocchino (ROMA1) Mr Francesco Massimo (Department SBAI, Sapienza Università di Roma)


Andrea Mostacci (ROMA1) Andrea Renato Rossi (MI) Enrica Chiadroni (LNF) Luigi Palumbo (ROMA1) Massimo Ferrario (LNF)

Presentation materials