Picosecond streak-cameras for bunch diagnostics in accelerators

N. S. Vorobiev; P. B. Gornostaev; V. L. Dorokhov; V. N. Korchuganov; V. I. Lozovoi; O. I. Meshkov; Xiaochao Ma; D. A. Nikiforov; A. V. Smirnov; E. V. Shashkov; M. Ya. Schelev; A. I. Stirin; A. G. Valentinov; A. K. Vereshchagin

doi:10.1117/12.2268720

20 February 2017 Picosecond streak-cameras for bunch diagnostics in accelerators

N. S. Vorobiev, P. B. Gornostaev, V. L. Dorokhov, V. N. Korchuganov, V. I. Lozovoi, O. I. Meshkov, Xiaochao Ma, D. A. Nikiforov, A. V. Smirnov, E. V. Shashkov, M. Ya. Schelev, A. I. Stirin, A. G. Valentinov, A. K. Vereshchagin

Author Affiliations +

Proceedings Volume 10328, Selected Papers from the 31st International Congress on High-Speed Imaging and Photonics; 103280N (2017) https://doi.org/10.1117/12.2268720
Event: 31st International Congress on High-Speed Imaging and Photonics, 2016, Osaka, Japan

Abstract

Temporal parameters of synchrotron pulse radiation at damping ring (DP) installation of VEPP-5 type were measured with the help of PS-1/S1 picosecond streak camera having 1.5 ps time resolution. These measurements were proceeded within 400-900 nm spectral range. It has been shown that our streak camera may record either a train of electron bunches with ns-duration or internal structure inside a single bunch. We were able to record the distance ~ 1.5 ns between separate bunches as well as their amplitude, which depends on particle numbers inside a bunch. Depending on linear accelerator mode of operation it was possible to define a single bunch duration, which was deviated within the range of 20-100 ps. The temporal structure of a single bunch was measured with 1.5 ps time accuracy. As a result, the VEPP-5 damping ring parameters were optimized, and particles injection conditions were improved. In addition, we have measured the temporal parameters of Vavilov-Cherenkov radiation (VCR) emitted by electron beam of linear accelerator. Our results provided important information on electron bunches formation and their quality inside linear accelerator before electrons injection inside a damping ring. Another series of experiments were done at VEPP-4M electron-positron collider. The dependence of beam length of the beam current measured with streak-camera allowed us to compute the wide-band impedance of the accelerator. The same data were obtained at Siberia-2 synchrotron radiation source (NRC “Kurchatov Institute”, Moscow).

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N. S. Vorobiev, P. B. Gornostaev, V. L. Dorokhov, V. N. Korchuganov, V. I. Lozovoi, O. I. Meshkov, Xiaochao Ma, D. A. Nikiforov, A. V. Smirnov, E. V. Shashkov, M. Ya. Schelev, A. I. Stirin, A. G. Valentinov, and A. K. Vereshchagin "Picosecond streak-cameras for bunch diagnostics in accelerators", Proc. SPIE 10328, Selected Papers from the 31st International Congress on High-Speed Imaging and Photonics, 103280N (20 February 2017); https://doi.org/10.1117/12.2268720

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KEYWORDS

Particles

Streak cameras

Cameras

Quartz

Temporal resolution

Mirrors

Electron beams

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