Two-dimensional Synchrotron Beam Characterisation from a Single Interferogram

• DOI: 10.48550/arxiv.2405.12090
• Publication Date: 2024-05-20
• Authors: Bojan Nikolic; Christopher L. Ca...; Nithyanandan Thya...; Laura Torino; Ubaldo Iriso
• Keywords: Accelerator Physics (physics.acc-ph); Nuclear and particle physics. Atomic energy. Radioactivity; FOS: Physical sciences; Physics - Accelerator Physics; QC770-798; Astrophysics - Instrumentation and Methods for Astrophysics; Instrumentation and Methods for Astrophysics (astro-ph.IM); Physics - Optics; Optics (physics.optics)

Double-aperture Young interferometry is widely used in accelerators to provide a one-dimensional beam measurement. We improve this technique by combining and further developing techniques of non-redundant aperture masking self-calibration from astronomy. Using visible synchrotron radiation, tests at the ALBA show that method provides an accurate two-dimensional transverse characterisation, even single 1ms interferogram. The resistant phase fluctuations might be introduced vibration optical components, or laboratory atmosphere.