Dresden 2026 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 2: Electron Accelerators and Sources II

AKBP 2.1: Topical Talk

Montag, 9. März 2026, 11:00–11:30, SCH/A117

From ELBE to DALI - Superconducting Electron Accelerators in Dresden — •Andreas Wagner^1,2, Ulf Lehnert¹, Andre Arnold¹, Manfred Helm^3,4, Sebastian Mährlein^1,4, Raffael Niemczyk¹, and Rong Xiang¹ — ¹Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany — ²Institute of Radiation Physics — ³Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum D — ⁴Dresden University of Technology, Dresden, Germany

The Helmholtz-Zentrum Dresden-Rossendorf successfully operates the superconducting ELBE (Electron LINAC with High Brilliance and Low Emittance) accelerator to produce a variety of secondary photon and particle beams. ELBE serves an international user community involved in fundamental studies in nuclear physics, radiation biology, solid-state physics, chemistry, materials science, detector characterisation, positron interactions with matter, and materials control using high-field THz radiation. Based on the experience of the existing user facility and after more than 20 years of operations, the DALI (Dresden Advanced Light Infrastructure) concept for a successor facility with an enhanced frequency range for high-field THz radiation ranging from 0.1 to 30 THz, a high intensity positron source, and ultra-fast electron diffraction has been developed. In 2025, DALI was promoted to the national shortlist of research infrastructures. This contribution will cover the scientific motivations, the implementation of the machine, and the proposed auxiliary instruments and end stations.

Keywords: superconducting accelerator; superconducting photoelectron injector; superradiant THz source; positron annihilation lifetime spectroscopy; MeV ultrafast electron diffraction