Simulation of ionization effects for high-density positron drivers in future plasma wakefield experiments

Conference · Mon May 12 04:00:00 EDT 2003

OSTI ID:815533

Bruhwiler, D L ^[1]; Dimitrov, D A; Cary, J R; Esarey, E; Leemans, W P

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1. LBNL Library

The plasma wakefield accelerator (PWFA) concept has been proposed as a potential energy doubler for present or future electron-positron colliders. Recent particle-in-cell (PIC) simulations have shown that the self-fields of the required electron beam driver can tunnel ionize neutral Li, leading to plasma wake dynamics differing significantly from that of a preionized plasma. It has also been shown, for the case of a preionized plasma, that the plasma wake of a positron driver differs strongly from that of an electron driver. We will present new PIC simulations, using the OOPIC code, showing the effects of tunneling ionization on the plasma wake generated by high-density positron drivers. The results will be compared to previous work on electron drivers with tunneling ionization and positron drivers without ionization. Parameters relevant to the energy doubler and the upcoming E-164x experiment at the Stanford Linear Accelerator Center will be considered.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Director, Office of Science. High Energy Physics (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 815533
• Report Number(s): LBNL--53431
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
ELECTRON BEAMS
ELECTRONS
IONIZATION
LASER PLASMA WAKEFIELD
POSITRONS
POTENTIAL ENERGY
SIMULATION
STANFORD LINEAR ACCELERATOR CENTER
TUNNELING
WAKEFIELD ACCELERATORS