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DOE OSTI · 1886028

Experiments with Undulator Radiation, Emitted by a Single Electron

Lobach, Ihar·Nagaitsev, Sergei·Romanov, Alexander·Shemyakin, Alexander·Stancari, Giulio
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Abstract

We study a single electron, circulating in the Fermilab IOTA storage ring and interacting with an undulator through single and multi-photon emissions. The focus of this research is on single-photon and two-photon undulator emissions. We begin by using one Single Photon Avalanche Diode (SPAD) detector to detect the undulator radiation photons and search for possible deviations from the expected Poissonian photon statistics. Then, we go on to use a two-photon interferometer consisting of two SPAD detectors separated by a beam splitter. This allows to test if there is any correlation in the detected photon pairs. In addition, the photocount arrival times can be used to track the longitudinal motion of a single electron and to compare it with simulations. This allowed us to determine several dynamical parameters of the storage ring such as the rf cavity phase jitter and the dependence of the synchrotron motion period on amplitude.

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Lobach, Ihar, Nagaitsev, Sergei, Romanov, Alexander, Shemyakin, Alexander, Stancari, Giulio. 2022-07-19. Experiments with Undulator Radiation, Emitted by a Single Electron. https://doi.org/10.18429/jacow-ipac2022-weoysp1

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