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Dortmund 2021 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 7: Electron Accelerators

AKBP 7.2: Talk

Wednesday, March 17, 2021, 14:15–14:30, AKBPb

A storage ring upgrade for MESA — •Christian Stoll — Institut für Kernphysik - JGU Mainz

MESA is an ERL facility currently under construction at the Johannes Gutenberg University in Mainz. With a maximum beam current of 1 mA it provides the opportunity for electron scattering experiments with a high density gas jet target at the MAGIX experiment. Increasing the beam current even further would also open up the investigation of thin polarized gas targets with sufficiently high interaction rates. Increasing the beam current to 100 mA would pose significant challenges to the existing ERL machine, thus the proposal is to use MESA in pulsed operation with a repetition rate of several kHz to fill a storage ring. The stored beam could nearly completely fill the ring, providing a quasi c.w. beam current to the thin gas target. Due to the repetition rate of several kHz the beam will not be stored for long so damping times and steady states are of no concern, rather we aim for peak brilliance at the experiment. Investigation of a suitable injection- and extraction scheme is crucial as well as understanding the beam target interaction and its effects on the beam. In the most favourable configuration the spent beam could be used for energy recovery.

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