CERN Accelerating science

Article
Report number	arXiv:2209.10937
Title	Cherenkov Diffraction Radiation Emissions from Single Electrons and Positrons on a Fused Silica Radiator
Author(s)	Estevez, Silas Ruhrberg (Unlisted, DE) ; Baumgartner, Tobias (Unlisted, DE) ; Bahl, Johann (Unlisted, DE) ; Lehrach, Thomas (Unlisted, DE) ; Thole, Tobias (Unlisted, DE) ; Nickel, Benildur (Unlisted, DE) ; Loewe, Philipp (Unlisted, DE) ; Hildebrandt, Lukas (Unlisted, DE) ; da Cruz E Silva, Cristóvão Beirão (CERN) ; Schütze, Paul (DESY) ; Joos, Markus (CERN)
Publication	2023-04-11
Imprint	2022-09-22
Number of pages	8
In:	Nucl. Instrum. Methods Phys. Res., A 1052 (2023) 168287
DOI	10.1016/j.nima.2023.168287 (publication)
Subject category	physics.acc-ph ; Accelerators and Storage Rings
Abstract	Beam diagnostics are crucial for smooth accelerator operations. Many techniques rely on instrumentation in which the beam properties are significantly affected by the measurement. Novel approaches aim to use Cherenkov Diffraction Radiation (ChDR) for non-invasive diagnostics. Unlike regular Cherenkov Radiation, the charged particles do not have to move inside of the medium, but it is sufficient for them to move in its vicinity as long as they are faster than the speed of light in the medium. Changes to the beam properties due to ChDR measurements are consequently negligible. To examine ChDR emission under different conditions, we placed a fused silica radiator in the DESY II Test Beam. We observed a linear increase in ChDR intensity for electron and positron momenta between 1 GeV/c and 5 GeV/c. Additionally, we found that electrons produce significantly more ChDR than positrons for increasing particle momenta. The results suggest a need for further research into the ChDR generation by electrons and positrons and may find application in the design of future beam diagnostic devices.
Copyright/License	preprint: (License: CC BY 4.0) publication: © 2023-2024 The Author(s) (License: CC BY 4.0)

Corresponding record in: Inspire