Würzburg 2018 – wissenschaftliches Programm
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 1: Particle Sources and Electron Accelerators
AKBP 1.5: Vortrag
Montag, 19. März 2018, 17:00–17:15, NW-Bau - HS4
Segmented Terahertz Electron Accelerator and Manipulator (STEAM) — •Dongfang Zhang1,2, Arya Fallahi1, Michael Hemmer1, Xiaojun Wu1, Moein Fakhari1,2, Yi Hua1, Huseyin Cankaya1, Anne-Laure Calendron1, Luis E. Zapata1, Nicholas H. Matlis1, and Franz X. Kärtner1,2,3 — 1Center for Free-Electron Laser Science, Deutsches Elektronen Synchrotron, Notkestrasse 85, 22607 Hamburg, Germany. — 2Department of Physics and The Hamburg Centre for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany. — 3Research Laboratory of Electronics, MIT, Cambridge, 02139 Massachusetts, USA.
We present a segmented THz based device (STEAM) capable of performing multiple high-field operations on the 6D-phase-space of ultrashort electron bunches. With this single device, using only a few microjoules of single-cycle THz radiation, we have shown record THz-based acceleration of more than 30 keV, with a peak acceleration field gradient of around 70 MV/m. At the same time, the STEAM device can also manipulate the electrons that show high focusing gradient (2 kT/m), compression of electron bunches down to 100 fs and streaking gradient of 140 urad/fs, which offers temporal profile characterizations with resolution below 10 fs. The STEAM device can be fabricated with regular mechanical machining tools and supports real-time switching between different modes of operation. It paves the way for the development of THz-based compact electron guns, accelerators, ultrafast electron diffractometers and Free-Electron Lasers.