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FOCUS: Fast Monte-CarlO Approach to Coherence of Undulator Sources
/ Siano, Mirko (U. Milan (main)) ; Butti, Daniele (CERN) ; Geloni, Gianluca (European XFEL, Hamburg) ; Iriso, Ubaldo (CELLS - ALBA, LLS) ; Lefèvre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Nosych, Andriy (CELLS - ALBA, LLS) ; Paroli, Bruno (U. Milan (main)) ; Potenza, Marco (U. Milan (main)) ; Torino, Laura (CELLS - ALBA, LLS) et al.
We present Fast Monte-CarlO approach to Coherence of Undulator Sources (FOCUS), a new GPU-based code to compute the transverse coherence of X-ray radiation from undulator sources. The code relies on scaled dimension- less quantities and analytic expressions of the electric field emitted by electrons in an undulator. [...]
2022 - 4 p.
- Published in : JACoW IBIC 2022 (2022) 257-260
Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.257-260
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2.
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Simulation Methods for Transverse Beam Size Measurements Using the Heterodyne Near Field Speckles of Hard X-rays
/ Goetz, Alexander (CERN) ; Butti, Daniele (CERN) ; Iriso, Ubaldo (CELLS - ALBA, LLS) ; Mazzoni, Stefano (CERN) ; Nosych, Andriy (CELLS - ALBA, LLS) ; Paroli, Bruno (Milan U.) ; Potenza, Marco (INFN, Milan ; Milan U.) ; Siano, Mirko (Milan U.) ; Teruzzi, Luca (Milan U.) ; Torino, Laura (CELLS - ALBA, LLS) et al.
The Heterodyne Near Field Speckles (HNFS) is a special type of interferometry technique where radiation is scattered by nanoparticles suspended in a medium. The scattered waves and the transmitted radiation form an interference pattern, which is modulated by the spatial coherence of the radiation and by the scattering properties of the nanoparticles. [...]
2020 - 4 p.
- Published in : 10.18429/JACoW-IBIC2020-THPP33
Fulltext: PDF;
In : 9th International Beam Instrumentation Conference, Online, 14 - 18 Sep 2020, pp.THPP33
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3.
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Electron Beam Size Measurements Using the Heterodyne Near Field Speckles at ALBA
/ Siano, Mirko (Milan U.) ; Iriso, Ubaldo (CELLS - ALBA, LLS) ; Kamma-Lorger, Christina (CELLS - ALBA, LLS) ; Mazzoni, Stefano (CERN) ; Nosych, Andriy (CELLS - ALBA, LLS) ; Paroli, Bruno (Milan U.) ; Potenza, Marco (Milan U.) ; Trad, Georges (CERN)
Experiments using the heterodyne near field speckle method (HNFS) have been performed at ALBA to characterize the spatial coherence of the synchrotron radiation, with the ultimate goal of measuring both the horizontal and vertical electron beam sizes. The HNFS technique consists on the analysis of the interference between the radiation scattered by a colloidal suspension of nanoparticles and the synchrotron radiation, which in this case corresponds to the hard x-rays (12keV) produced by the in-vacuum undulator of the NCD-Sweet beamline. [...]
2019 - 4 p.
- Published in : 10.18429/JACoW-IBIC2019-TUPP031
Fulltext: PDF;
In : 8th International Beam Instrumentation Conference (IBIC 2019), Malmo, Sweden, 8 - 12 Sep 2019, pp.TUPP031
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4.
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Two-Dimensional Beam Size Measurements with X-Ray Heterodyne Near Field Speckles
/ Siano, Mirko (Milan U.) ; Butti, Daniele (CERN) ; Goetz, Alexander (CERN) ; Iriso, Ubaldo (CELLS - ALBA, LLS) ; Lefèvre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Nosych, Andriy A (CELLS - ALBA, LLS) ; Paroli, Bruno (Milan U.) ; Potenza, Marco A C (Milan U.) ; Solano, Eduardo (CELLS - ALBA, LLS) et al.
We report on 2D beam size measurements with a novel interferometric technique named Heterodyne Near Field Speckles, capable of resolving few-micrometer beam sizes. It relies on the interference between the weak spherical waves scattered by a colloidal suspension and the intense transilluminating X-ray beam. [...]
JACoW, 2021 - 4 p.
- Published in : JACoW IBIC 2021 (2021) 176-179
Fulltext: PDF;
In : 10th International Beam Instrumentation Conference (IBIC 2021), Online, Korea, 13 - 17 Sep 2021, pp.176-179
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5.
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Progress on Transverse Beam Profile Measurement Using the Heterodyne Near Field Speckles Method at ALBA
/ Mazzoni, Stefano (CERN) ; Iriso, Ubaldo (CELLS - ALBA, LLS) ; Kamma-Lorger, Christina (CELLS - ALBA, LLS) ; Nosych, Andriy (CELLS - ALBA, LLS) ; Potenza, Marco (INFN, Milan ; Milan U.) ; Roncarolo, Federico (CERN) ; Siano, Mirko (Milan U.) ; Trad, Georges (CERN)
We present the recent developments of a study aiming at measuring the transverse beam profile using the Heterodyne Near Field Speckles (HNFS) method. The HNFS technique consists of a suspension of nanoparticles suspended in a liquid and illuminated by synchrotron radiation (either in the visible or in X-ray wavelength range). [...]
JACoW, 2019 - 4 p.
- Published in : 10.18429/JACoW-IBIC2018-THOA03
Published fulltext: PDF;
In : 7th International Beam Instrumentation Conference, Shanghai, China, 9 - 13 Sep, 2018, pp.THOA03
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6.
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Transverse Beam Size Diagnostics using Brownian Nanoparticles at ALBA
/ Siano, Mirko (INFN, Milan ; Milan U.) ; Goldblatt, Aurelie N (CERN) ; Iriso, Ubaldo (CELLS - ALBA, LLS) ; Mazzoni, Stefano (CERN) ; Nosych, Andriy (CELLS - ALBA, LLS) ; Paroli, Bruno (INFN, Milan ; Milan U.) ; Potenza, Marco (INFN, Milan ; Milan U.) ; Torino, Laura (CELLS - ALBA, LLS) ; Trad, Georges (CERN)
In this work we describe a novel beam diagnostic method based on coherence characterization of broad-spectrum bending magnet radiation through the Heterodyne Near Field Scattering (HNFS) technique. HNFS is a self- referencing technique based on the interference between the transmitted beam and the spherical waves scattered by each particle of a colloidal suspension. [...]
2017 - 5 p.
- Published in : 10.18429/JACoW-IBIC2016-MOPG73
Fulltext: PDF;
In : International Beam Instrumentation Conference, Barcelona, Spain, 11 - 15 Sep 2016, pp.MOPG73
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7.
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FOCUS: fast Monte Carlo approach to coherence of undulator sources
/ Siano, M (Milan U. ; INFN, Milan) ; Geloni, G (European XFEL, Hamburg) ; Paroli, B (Milan U. ; INFN, Milan) ; Butti, D (CERN) ; Lefèvre, T (CERN) ; Mazzoni, S (CERN) ; Trad, G (CERN) ; Iriso, U (CELLS - ALBA, LLS) ; Nosych, A A (CELLS - ALBA, LLS) ; Torino, L (CELLS - ALBA, LLS) et al.
FOCUS (Fast Monte CarlO approach to Coherence of Undulator Sources) is a new GPU-based simulation code to compute the transverse coherence of undulator radiation from ultra-relativistic electrons. The core structure of the code, which is written in the language C++ accelerated with CUDA, combines an analytical description of the emitted electric fields and massively parallel computations on GPUs. [...]
2023 - 10 p.
- Published in : J. Synchrotron Radiat. 30 (2023) 217-226
Fulltext: PDF;
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Optics Measurement using the N-BPM Method for the ALBA Synchrotron
/ Langner, Andy (CERN) ; Benedetti, Gabriele (CELLS - ALBA, LLS) ; Carlà, Michele (CELLS - ALBA, LLS) ; Coello de Portugal, Jaime Maria (CERN) ; Iriso, Ubaldo (CELLS - ALBA, LLS) ; Martí, Zeus (CELLS - ALBA, LLS) ; Tomás, Rogelio (CERN)
The N-BPM method recently developed for the LHC has significantly improved the precision of optics measurements which are based on beam position monitor (BPM) turn-by-turn data. The main improvement is owed to the consideration of correlations for statistical and systematic error sources, as well as increasing the amount of BPM combinations for one measurement. [...]
CERN-ACC-2015-329.-
2015 - 4 p.
- Published in : (2015) , pp. MOPJE057
Published version from JACoW: PDF; External link: JACOW
In : 6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.MOPJE057
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Beam Instrumentation Challenges for FCC-ee
/ Wendt, Manfred (CERN) ; Carideo, Emanuela (CERN) ; Härer, Bastian (KIT, Karlsruhe, IPE) ; Iriso, Ubaldo (CELLS - ALBA, LLS) ; Lefèvre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Mitsuhashi, Toshiyuki (Sokendai, Tsukuba) ; Müller, Anke-Susanne (KIT, Karlsruhe, IPE) ; Niehues, Gudrun (KIT, Karlsruhe, IPE) ; Reißig, Micha (KIT, Karlsruhe, IPE) et al.
For the accelerator-based future of high energy physics at the energy frontier, CERN started to investigate a 92 km circumference Future Circular Collider (FCC), as e⁺/e⁻ collider the FCC-ee will operate at beam energies up to 182.5 GeV. Beside the machine operational aspects, beam instrumentation will play a key role in verifying and optimizing the machine to achieve the ambitious beam parameters and quality. [...]
2023 - 10 p.
- Published in : JACoW eeFACT 2022 (2023) 208-217
Fulltext: PDF;
In : 65th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+ e- Colliders (eeFACT2022), INFN, Frascati, Italy, 12 - 16 Sep 2022, pp.208-217
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PSF Characterization of the ALBA X-Ray Pinholes
/ Iriso, Ubaldo (CELLS - ALBA, LLS) ; Cazorla, Alba (CELLS - ALBA, LLS) ; Mases Solé, Ingrid (CERN) ; Nosych, Andriy (CELLS - ALBA, LLS) ; Zeus, Martí (CELLS - ALBA, LLS)
ALBA is currently equipped with two X-ray pinhole cameras for continuous beam size monitoring using the synchrotron radiation from two different bending magnets. The first pinhole was installed on day-1 and it is working properly since 2011 as the work-horse for the ALBA emittance measurements. [...]
2022 - 5 p.
- Published in : JACoW IBIC 2022 (2022) 421-425
Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.421-425
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