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TU2AB3 |
Single-Shot Longitudinal Beam Profile and Terahertz Diagnostics at MHz - Towards GHz-Rates with High-Throughput Electronics |
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- M. Caselle, B.M. Balzer, M. Brosi, E. Bründermann, S. Funkner, B. Kehrer, A.-S. Müller, M.J. Nasse, G. Niehues, M.M. Patil, L. Rota, M. Schuh, P. Schönfeldt, J.L. Steinmann, M. Weber, M. Yan
KIT, Eggenstein-Leopoldshafen, Germany
- G. BORGHI,, M. Boscardin, S. Ronchin
FBK, Trento, Italy
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Accelerators with high bunch-repetition rates mandate high-throughput detector electronics to diagnose each individual bunch. KALYPSO with a 256-pixel detector line-array integrated in an fs laser-based electro-optical set-up allows longitudinal bunch profiling with sub-ps resolution as demonstrated at the storage ring ANKA for single-bunch mode operation at 2.7 MHz and also at the Eu-XFEL with a 4.5-MHz micro-bunch train. Improvements will enhance fs-time accuracy, reduce noise, and increase frame-rate. A custom front-end with an application-specific integrated circuit (ASIC) has been developed to operate with 10-MHz frame-rates at low noise. Several linear arrays with up to 1024 pixel and smaller pixel pitch were submitted for production. The development of a low-gain avalanche diode (LGAD) sensor will further improve the time resolution. Detector data is transmitted in the DAQ framework to external GPU-based clusters and processed in real-time at 7 Gbytes/s with a few μs latency. For beam dynamics studies we also develop KAPTURE capable to analyze terahertz detector pulses at GHz-repetition rates. These developments open new windows in beam diagnostics of modern accelerators.
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Slides TU2AB3 [1.906 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2017-TU2AB3
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TUPCC16 |
Status of the THz Streaking Experiment with Split Ring Resonators at FLUTE |
186 |
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- V. Schlott, M.M. Dehler, R. Ischebeck, M. Moser
PSI, Villigen PSI, Switzerland
- E. Bründermann, S. Funkner, A.-S. Müller, M.J. Nasse, G. Niehues, R. Ruprecht, T. Schmelzer, M. Schuh, M. Schwarz, M. Yan
KIT, Karlsruhe, Germany
- T. Feurer, M. Hayati, Z. Ollmann, R. Tarkeshian
Universität Bern, Institute of Applied Physics, Bern, Switzerland
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THz streaking with split ring resonators (SRR) promise ultra-high (sub-femtosecond) temporal resolution even for relativistic electron bunches. A proof-of-principle experiment in collaboration between the University of Bern, the Paul Scherrer Institute (PSI) and the Karlsruhe Institute of Technology (KIT) is currently prepared at the FLUTE facility (Ferninfrarot Linac und Test Experiment) at KIT. Most of the critical components have been designed, tested and set-up in the 7 MeV diagnostics part of FLUTE. In this contribution we will present an update on the experimental set-up and report on SRR configurations which have been optimized for highest THz deflection, while simultaneously accounting for the restrictions of the manufacturing process. Test measurements characterizing the SRR samples and the THz source, which has been matched to the FLUTE gun laser, will also be presented.
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Poster TUPCC16 [0.539 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2017-TUPCC16
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