Influence of the reflectivity of a crystal on the angular distribution of diffracted transition radiation of relativistic electrons

The influence of the angular profile of crystal reflectivity on the assessment of the divergence of a beam of relativistic electrons is studied through measurements of the angular distribution of diffracted transition radiation. The results show that, when the angular distribution of reflectivity is...

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Bibliographic Details
Published in:Journal of instrumentation 2024-05, Vol.19 (5), p.C05043
Main Authors: Berdnichenko, A.V., Budko, A.V., Kolodochkin, V.V., Takabayashi, Y., Vnukov, I.E.
Format: Article
Language:English
Subjects:
Angular distribution
Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc)
Electrons
Instrumentation for particle accelerators and storage rings - high energy (linear accelerators, synchrotrons)
Reflectance
Relativistic effects
Systematic errors
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Summary:The influence of the angular profile of crystal reflectivity on the assessment of the divergence of a beam of relativistic electrons is studied through measurements of the angular distribution of diffracted transition radiation. The results show that, when the angular distribution of reflectivity is taken into account, the obtained divergence values are close to the true values. Failure to take this effect into account leads to systematic errors in determining the horizontal divergence. The magnitude of the error depends on the beam divergence and is inversely proportional to the square of the energy of the reflected photons.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/19/05/C05043