Erlangen 2018 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 45: Precision Spectroscopy V - highly charged ions (joint session A/Q)
Q 45.4: Vortrag
Mittwoch, 7. März 2018, 14:45–15:00, K 1.016
Progress of the MEDeGUN commissioning and extension of the TwinEBIS test bench — •Hannes Pahl1,2, Martin Breitenfeldt1, Alexander Pikin1,3, Johanna Pitters1, and Fredrik Wenander1 — 1CERN, 1211 Geneva 23, Switzerland — 2Universität Heidelberg, 69120 Heidelberg, Germany — 3Brookhaven National Laboratory, Upton 11973, USA
We report on recent results related to the commissioning of a Brillouin-type electron gun (MEDeGUN) at TwinEBIS, a test bench for the development of Electron Beam Ion Sources (EBIS) at CERN. MEDeGUN is developed for both nuclear research and medical applications. It combines a strong electrostatic compression of the electron beam inside the magnetically shielded gun with the conventional magnetic compression into the ionisation region, providing high current-density electron beams for rapid charge breeding. During the commissioning, a 10 keV electron beam of more than 1 A was successfully injected into a 2 T solenoid field with negligible losses.
In order to measure the charge breeding efficiency, an upgrade of the existing setup is required. Hence, the TwinEBIS setup will be extended with a low-energy ion beam line that allows for external ion injection and extraction. A number of diagnostic devices for the extracted ion bunches will be installed, and a gas feed will be added to enable neutral gas injection directly into the EBIS ionisation region. Here, we present the design of the beam line and modifications to MEDeGUN intended to be implemented for the next commissioning run.