Wuppertal 2015 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
AKBP: Arbeitskreis Beschleunigerphysik
AKBP 5: Poster
AKBP 5.2: Poster
Dienstag, 10. März 2015, 11:00–19:00, Foyer Ebene G.10
Functionality Demonstration of the non-invasive Bunch Shape Monitor at GSI high current LINAC — •Benjamin Zwicker1,2, Kester Oliver1,2, Peter Forck1,2, Piotr Kowina1, Christoph Dorn1, and Thomas Sieber1 — 1GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany — 2IAP Goethe Universität, Frankfurt, Germany
At the heavy ion LINAC at GSI, a novel scheme of a non-invasive Bunch Shape Monitor has been tested with several different ion beams at 11.4 MeV/u and beam currents in the range from 0.08 to 1 mA. Caused by the beam impact on the residual gas, secondary electrons are liberated. These electrons are accelerated by an electrostatic field, transported via a sophisticated electrostatic energy analyzer and an rf-deflector, acting as a time-to-space converter. Finally a MCP phosphor assembly amplifies the electrons and the electron distribution is detected by a CCD camera. For the applied beam settings this Bunch Shape Monitor is able to obtain longitudinal profiles down to 250 ps rms width with a resolution of 34 ps. Systematic parameter studies for the device were performed to demonstrate the feasibility and to detect, as expected, non-Gaussian profiles. Finally these obtained non-Gaussian profiles are analyzed.