Ultra-Fast Line-Camera KALYPSO for fs-Laser-Based Electron Beam Diagnostics
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M.M. Patil, E. Bründermann, M. Caselle, S.A. Chilingaryan, T. Dritschler, A. Ebersoldt, S. Funkner, A. Kopmann, A.-S. Müller, M.J. Nasse, G. Niehues, M. Reissig, J.L. Steinmann, M. Weber, C. Widmann
KIT, Karlsruhe, Germany
Funding:This work is supported by BMBF project 05K19VKD (Federal Ministry of Education and Research), DFG-funded Doctoral School "KSETA" A very common bottleneck to study short electron bunch dynamics in accelerators is a detection scheme that can deal with high repetition rates in the MHz range. The KIT electron storage ring KARA (Karlsruhe Research Accelerator) is the first storage ring with a near-field single-shot electro-optical (EO) bunch profile monitor installed for the measurement of electron bunch dynamics in the longitudinal phase-space. Using electro-optical spectral decoding (EOSD) it is possible to imprint the bunch profile on chirped laser pulses subsequently read out by a spectrometer and a camera. However, commercially available cameras have a drawback in their acquisition rate, which is limited to a few hundred kHz. Hence, we have developed KALYPSO, an ultra-fast line camera capable of operating in the MHz regime. Its modular approach allows the installation of several sensors e.g. Si, InGaAs, PbS, PbSe to cover a wide range of spectral sensitivities. In this contribution, an overview of the EOSD experimental setup and the detector system installed for longitudinal bunch studies will be presented.
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Fast Measurements of the Electron Beam Transverse Size and Position on SOLEIL Storage Ring
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M. Labat, A. Bence, N. Hubert, D. Pédeau
SOLEIL, Gif-sur-Yvette, France
E. Bründermann, M. Caselle, A. Ebersoldt, M.M. Patil
KIT, Karlsruhe, Germany
On SOLEIL storage ring, three beamlines are dedicated to electron beam diagnostics: two in the X-ray range and one in the visible range. The visible range beamline uses the synchrotron radiation which is emitted in one of the ring dipoles and further extracted by a slotted mirror operated in surf-mode (surfing on the upper part of the synchrotron layer). The radiation in the visible range is then transported towards a diagnostic hutch in the experimental hall, allowing electron beam imaging at the source point onto a standard CCD camera. In the perspective of prototyping works for the eventually forthcoming upgrade of SOLEIL, and for the on-going commissioning of a new Multipole Injection Kicker (MIK), we recently installed in this hutch two new branches ended by two new cameras (a KALYPSO system and a standard CMOS camera). We report in this paper the optimization we performed on the mirror mode of operation, as well as on spectral filtering, polarization selection, image plane location, fast acquisition tools, to improve the resolution and increase the speed of our initial transverse beam size measurement at source point.
