Cherenkov Diffraction Radiation Emissions from Single Electrons and Positrons on a Fused Silica Radiator

Ruhrberg Estevez, Silas; Nickel, Benildur; Bahl, Johann; Beirao da Cruz e Silva, Cristovao; Baumgartner, Tobias; Thole, Tobias; Loewe, Philipp; Hildebrandt, Lukas; Joos, Markus; Lehrach, Thomas; Schütze, Paul

doi:10.1016/j.nima.2023.168287

Journal Article

PUBDB-2023-00810

Cherenkov Diffraction Radiation Emissions from Single Electrons and Positrons on a Fused Silica Radiator

Ruhrberg Estevez, S. ; Baumgartner, T. ; Bahl, J. ; Lehrach, T. ; Thole, T. ; Nickel, B. ; Loewe, P. ; Hildebrandt, L. ; Beirao da Cruz e Silva, C.Extern* ; Schütze, P.DESY* ; Joos, M. (Corresponding author)Extern*

2023
North-Holland Publ. Co. Amsterdam

Nuclear instruments & methods in physics research / A 1052, 168287 (2023) [10.1016/j.nima.2023.168287]

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Please use a persistent id in citations: doi:10.1016/j.nima.2023.168287 doi:10.3204/PUBDB-2023-00810

Report No.: arXiv:2209.10937

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 increases in ChDR intensity for electron and positron momenta between $1~GeV/c$ and $5~GeV/c$. Additionally, we found a larger photon yield for electrons than positrons for increasing particle momenta. However, the significance of these measurements is strongly limited by the accuracy of the conversion from the measured signal to absolute photon numbers. 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.

Keyword(s): CERN ; DESY ; Test beam ; Beamline for schools ; Cherenkov radiation ; ChDR

Classification:

ddc:530

Note: Auch auf arXiv verfügbar: https://arxiv.org/abs/2209.10937

Contributing Institute(s):

Research Program(s):

611 - Fundamental Particles and Forces (POF4-611) (POF4-611)

Experiment(s):

DESY: TestBeamline 21 (DESY II)

Appears in the scientific report 2023

Database coverage:
Medline

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