Dresden 2020 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 12: Electron Accelerator

AKBP 12.2: Talk

Wednesday, March 18, 2020, 15:15–15:30, MOL 213

Beam Pulsing at the S-DALINAC: Superposition of the 3 GHz Beam Structure with a 10 MHz Macrostructure — •Lennart Stobbe, Michaela Arnold, Jonny Birkhan, Uwe Bonnes, Lars Jürgensen, and Norbert Pietralla — Institut für Kernphysik, TU Darmstadt, Germany

The superconducting electron-linear-accelerator S-DALINAC provides a cw-beam with a 3 GHz time structure for electron scattering experiments [1]. This mode is fixed and does not allow to deliver a pulsed beam to the experimental setups. Time of flight measurements are currently not feasible at the so-called QCLAM magnetic spectrometer, which would be needed for particle separation within coincidence experiments as well as for a significant background suppression. Therefore, a new concept for pulsing the electron beam at the S-DALINAC has been developed. It is planned to superimpose the 3 GHz beam structure with a 10 MHz macrostructure. This concept is based on using a plate capacitor setup in order to achieve the superposition. The plate capacitor will deflect the beam across an aperture with a repetition rate of 10 MHz. The current state of the capacitor setup as well as several simulations will be presented.
[1] N. Pietralla, Nuclear Physics News, Vol. 28, No. 2, 4 (2018)