Darmstadt 2016 – scientific programme
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 15: PWA and self modulation
AKBP 15.2: Talk
Thursday, March 17, 2016, 16:45–17:00, S1/05 24
Electron windows studies for Self-Modulation Experiments at PITZ — •Osip Lishilin1, Reinhard Brinkmann2, Johannes Engel1, Florian Gruener3,4, Matthias Gross1, Gerald Koss1, Gregor Loisch1, Sebastian Philipp1, Gaurav Pathak1, Dieter Richter5, Carl Schroeder6, Rico Schuetze1, and Frank Stephan1 — 1DESY, Zeuthen, Germany — 2DESY, Hamburg, Germany — 3Universität Hamburg, Hamburg, Germany — 4CFEL, Hamburg, Germany — 5HZB, Berlin, Germany — 6LBNL, Berkeley, USA
The self-modulation instability of long particle beams was proposed as a new mechanism to produce driver beams for proton driven plasma wakefield acceleration (PWFA). The PWFA experiment at the Photo Injector Test facility at DESY, Zeuthen site (PITZ) was launched to experimentally demonstrate and study the self-modulation of long electron beams in plasma. Key aspects for the experiment are the plasma cell of novel design, the flexible photocathode laser system and well-developed diagnostics at PITZ. The plasma cell is a cross-shaped lithium heat pipe oven with inert gas buffer zones at input/output ports. An ArF ionization laser is coupled through side ports for the plasma generation. Thin foils are mounted at the ends of the plasma cell to isolate plasma and buffer gas from the vacuum beamline, while the electron beam has to pass them with minimal distortion. This contribution presents an overview of the experimental setup and preparatory studies for the most suitable parameters of the electron windows as well as proposed improvements for the technical design of the setup.