• G.X. Xia
  MPI-P, München
• M. Ivanyan
  CANDLE, Yerevan
• K. Manukyan, K.A. Sargsyan
  YSU, Yerevan
• R. Wanzenberg
  DESY, Hamburg

At DESY the PETRA accelerator has been converted into a new 3rd generation high-brilliance synchrotron radiation facility called PETRA III. For the first commissioning in spring 2009 a positron beam is used. In the future it is also foreseen to operate the synchrotron light source with an electron beam. Ion effects pose a potential problem to the electron beam operation of PETRA III. In this paper, a weak-strong simulation code is employed to study the ion effect issues in detail for different operation scenarios.

• F. Zimmermann, R.W. Assmann, M. Giovannozzi, Y. Papaphilippou
  CERN, Geneva
• A. Caldwell, G.X. Xia
  MPI-P, München

Short high-energy proton bunches have been proposed as efficient drivers for future single-stage electron-beam plasma accelerators. We discuss if and how the desired proton bunches could be obtained in the CERN accelerator complex, considering various compression schemes, such as a fast non-adiabatic lattice change prior to extraction from a storage ring or the use of transversely deflecting cavities.

• A. Caldwell, F. Simon, G.X. Xia
  MPI-P, München
• K.V. Lotov
  BINP SB RAS, Novosibirsk
• A.M. Pukhov
  HHUD, Dusseldorf

The idea of proton bunch driven plasma wakefield acceleration was recently proposed. The motivation is to use an existing high energy proton beam to drive a large amplitude accelerating electric field, and then accelerate the electrons to the energy frontier. Simulations of the plasma wakefield production and acceleration process from a PIC code are given in this paper. In order to get high accelerating field, the required proton bunch length is extremely small. The preliminary design parameters for bunch compression are also presented.