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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 10: Instrumentation and Beam Diagnostics II

AKBP 10.6: Talk

Wednesday, March 20, 2024, 18:30–18:45, E 020

Characterizing Optical Synchrotron Radiation in the Geometric Optical Phase Space and Optimizing the Energy Transport to a Photo Detector — •Marvin-Dennis Noll, Johannes Leonard Steinmann, Dima El Khechen, Erhard Huttel, Erik Bründermann, and Anke-Susanne Müller — IBPT, KIT, Karlsruhe

At the Karlsruhe Research Accelerator (KARA) facility, an electron beam is generated by a thermionic electron gun, pre-accelerated to 53 MeV by a microtron and then ramped up to 500 MeV in a booster synchrotron before being injected into the storage ring, where a final electron energy of 2.5 GeV is reached.

With a circumference of 26 m the booster synchrotron has similar size and revolution frequency as the proposed large momentum acceptance storage ring of the cSTART project at KIT. Both synchrotrons do not reach equilibrium conditions which emphasizes the need for fast bunch-by-buch resolved diagnostics.

Compared to a 2D camera, when using 1D photodetectors for synchrotron light based diagnostics, either directly or after a fiber optics segment, the optic design goal is to maximize the optical intensity at the photo detector, rather than to keep spacial coherence. In this field of non-imaging optics the emitter, optical setup and sink can be modelled in the optical phase space, with the etendue being the conserved quantity and position and angle the independent variables. In this contribution we describe the measurement setup and compare with measurments.

Keywords: synchrotron light; photo detector; fiber optics