Beams Document 3939-v1

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Electro-optic sampling for ultra-fast diagnostics at the A0 photoinjector

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Camille M. Ginsburg
Updated by:
Camille M. Ginsburg
Document Created:
12 Sep 2011, 16:27
Contents Revised:
12 Sep 2011, 16:27
Metadata Revised:
12 Sep 2011, 16:27
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Modern accelerators with sub-picosecond bunch duration place a new demand on the time resolution of bunch diagnostics. These include high-gradient laser-plasma wakefield accelerators, X-ray free electron lasers, and future linear colliders. This has motivated exploration of electro-optic sampling techniques with potential for femtosecond-scale, single-shot probing of diagnostic light such as coherent transition radiation or bunch wakefields. We present details on the installation of an electro-optic sampling experiment at Fermilab’s A0 photoinjector facility. Improvement of single-shot techniques by utilizing balanced, two-line imaging is described. Results on measurements of coherent transition radiation from short electron bunches are discussed. We conclude by suggesting a configuration for a time-resolved beam position monitor for measuring the spatio-temporal correlation within a single bunch.
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