Mainz 2022 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 13: Diagnostics, Control and Instrumentation 2

AKBP 13.4: Vortrag

Donnerstag, 31. März 2022, 14:45–15:00, AKBP-H13

Longitudinal phase space (LPS) characterization of high brightness electron beams at PITZ — •Namra Aftab¹, Zakaria Aboulbanine¹, Gowri Adhikari¹, Prach Boonpornprasert¹, Maria-Elena Castro-Carballo¹, Georgi Georgiev¹, James Good¹, Matthias Gross¹, Andreas Hoffmann¹, Christian Koschitzki¹, Mikhail Krasilnikov¹, Xiangkun Li¹, Osip Lishilin¹, Anusorn Lueangaramwong¹, David Melkumyan¹, Raffael Niemczyk¹, Anne Oppelt¹, Houjun Qian¹, Frank Stephan¹, Grygorri Vashchenko¹, Tobias Weilbach¹, and Wolfgang Hillert² — ¹DESY, Zeuthen, Germany — ²University of Hamburg, Germany

Methodological studies to improve the LPS tomography of space-charge dominated electron beams were carried out at the Photo Injector Test facility at DESY in Zeuthen (PITZ). In the experimental procedure, initially, a 200 μm-wide horizontal slit was introduced before the booster to cut the beam to strongly reduce space charge effects. Next, the signal resolution of this truncated beam was improved by careful beta function control at the reference screen of momentum measurements. A combination of both steps enabled accurate measurement of minimum energy spread and better control of beam phase advance during booster phase scan, i.e. control of booster amplitude and phase scan range. After optimization of the experimental conditions, the momentum projections were fed to a tomographic reconstruction algorithm to obtain the reconstructed LPS. Finally, the noisy artifacts in LPS were addressed to further improve the results.