Jul 19 – 21, 2017
DESY, Zeuthen
Europe/Berlin timezone

SP12: Bell’s instability: from astrophysics to laboratory experiment

Jul 20, 2017, 10:33 AM
3m
SR3 (DESY, Zeuthen)

SR3

DESY, Zeuthen

Platanenallee 6 15738 Zeuthen Germany
Speedposter_Beam Dynamics and Photon Sources Speed-Posterpresentation: Beam Dynamics and Photon Sources

Speaker

Dr Chun-Sung Jao (DESY)

Description

The diffusive shock acceleration at the forward shocks of shell-type supernova remnants is considered as a process to generate high energy cosmic ray particles. For efficient acceleration, magnetic field fluctuations stronger than the background interstellar field are indispensable in the upstream region of the shock. Bell’s instability, a cosmic-ray stream driven instability, is proposed as a candidate for providing the required magnetic turbulence. In recent MHD studies and Particle-In-Cell (PIC) simulations show that the magnetic field fluctuations stronger than the background interstellar field is expectable theoretically. In order to examine the saturation level and mechanism of Bell’s instability in the laboratory, we attempt to develop a laboratory experiment by using the plasma cell and electron source of the PITZ group at DESY in Zeuthen. Here, we present the technical design of the experiment and provide information on preparatory computational investigations based on fully kinetic particle-in-cell simulations with OSIRIS.

Primary author

Dr Chun-Sung Jao (DESY)

Co-authors

Anne Oppelt (DESY, Zeuthen, Germany) Frank Stephan (DESY, Zeuthen, Germany) Gregor Loisch (DESY, Zeuthen, Germany) Jacek Niemiec (Institute of Nuclear Physics PAN, Krakow, Poland) Jens Osterhoff (DESY, Hamburg, Germany) Martin Pohl (DESY, Zeuthen, Germany) Martinez de la Ossa Alberto (Institute of Experimental Physics, University Hamburg, Germany) Matthias Gross (DESY, Zeuthen, Germany) Mikhail Krasilnikov (DESY, Zeuthen, Germany) Sergei Vafin (Institute of Physics and Astronomy, University of Potsdam, Potsdam-Golm, Germany) Timon Mehrling (DESY, Hamburg, Germany) Ye Chen (DESY, Zeuthen, Germany)

Presentation materials