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Objectives

This theme regroups several important topics regarding novel accelerator concepts in different fields: laserdriven and proton-driven PWFA (plasma wake field acceleration), including femtosecond arrival time control. On the one hand, laser-driven plasma wake field acceleration has been under study in many European institutes and universities mostly on an individual basis. In EuCARD-2, steps are made towards a collaborative experimental characterization and assessment of different methods of production of high brightness electron beams by several leading partners (CNRS-LOA, HZDR, INFN and USTRATH). On the road to higher energy acceleration, a two stage all optical acceleration process is characterized, as a first step towards chaining laser-driven PWFA cells.

• Feasibility study of external injection done at INFN and HFZD
• Optical injection done at LOA and LLC
• Two stage laser plasma accelerator done at STRATH
• Digital intra-bunch-train feedback for femtosecond arrival-time control of electron bunches
• Concept for plasma cells for beam acceleration with a length of equal or above 10m
• Understand instabilities and modulations in long plasma, driver and accelerated beam
• Prototyping and development of diagnostics for long plasma cells to be used in CERN experiment testing proton-driven plasma wakefield acceleration

Tasks

1. Coordination and Communication
2. Achievement of high brightness electron beam with laser plasma accelerators
3. Ultra-fast accelerator science
4. Modulation of long plasmas