Author: Curcio, A.
Paper Title Page
FRXC02
Non Invasive Bunch Length Measurements Exploiting Cherenkov Diffraction Radiation  
 
  • S. Mazzoni, M. Bergamaschi, R. Corsini, A. Curcio, W. Farabolini, D. Gamba, L. Garolfi, A. Gilardi, R. Kieffer, M. Krupa, T. Lefèvre, E. Senes, M. Wendt
    CERN, Geneva, Switzerland
  • A. Curcio
    NSRC SOLARIS, Kraków, Poland
  • C. Davut, G.X. Xia
    UMAN, Manchester, United Kingdom
  • W. Farabolini
    CEA-DRF-IRFU, France
  • K.V. Fedorov, P. Karataev, K. Lekomtsev, C. Pakuza
    JAI, Oxford, United Kingdom
  • K.V. Fedorov, A. Potylitsyn
    TPU, Tomsk, Russia
  • J. Gardelle
    CEA, LE BARP cedex, France
  • P. Karataev
    Royal Holloway, University of London, Surrey, United Kingdom
  • T.H. Pacey, Y.M. Saveliev
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
  • A. Schloegelhofer
    TU Vienna, Wien, Austria
  • E. Senes
    Oxford University, Physics Department, Oxford, Oxon, United Kingdom
 
  Cherenkov Diffraction Radiation (ChDR) refers to the emission of broadband electromagnetic radiation which occurs when a charged particle propagates at relativistic speed in the vicinity of a dielectric material. At variance with the better-known Cherenkov radiation, ChDR is a non-invasive technique, that is the particle beam does not impinge on the dielectric radiator. ChDR also possesses other interesting features like a relatively high light yield, a broadband spectrum of emission and the emission at a relatively large angle with respect to the beam trajectory. Due to its potential, CERN initiated over the last few years several studies on ChDR-based diagnostics techniques. In this contribution I will focus on the exploitation of ChDR for non-invasive bunch length measurement, from proof of principle tests performed at the CLEAR facility at CERN and CLARA at Daresbury laboratory to current developments for experiments and facilities such as AWAKE and FCC  
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TUPAB065 Solaris Storage Ring Performance After 6 Years of Operation 1515
 
  • A.I. Wawrzyniak, A. Curcio, K. Gula, M.A. Knafel, G.W. Kowalski, A.M. Marendziak, R. Panaś, M. Waniczek, M. Wiśniowski
    NSRC SOLARIS, Kraków, Poland
 
  Solaris is a third generation light source operating since 2015 in Kraków, Poland. Between 2015 and 2018 the synchrotron as well as two beamlines were commissioned. During commissioning phases, the good performance of Solaris storage ring has been reached. The beam optics was brought close to the design one. Since October 2018 Solaris storage ring is in the user operation mode. Moreover, two other beamlines with the elliptically polarized undulators used as source were installed and are under commissioning now. In 2020 the total beam availability of 93% was reached with the average circulating current of 400 mA and the total lifetime of 15 h. Over last two years few improvements of the storage ring were done to optimize the storage ring performance. The Landau cavities were tuned to improve the Touschek lifetime and suppress the instabilities. Two diagnostics beamlines were installed and commissioned allowing for the beam sizes in three planes and emittance measurements. The storage ring optics was fine-tuned to increase the dynamic aperture.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB065  
About • paper received ※ 19 May 2021       paper accepted ※ 26 May 2021       issue date ※ 16 August 2021  
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TUPAB277 Bunch Length Characterizations for the Solaris Injector LINAC 2117
 
  • A. Curcio, M.A. Knafel, G.W. Kowalski, R. Panaś, M. Waniczek, A.I. Wawrzyniak
    NSRC SOLARIS, Kraków, Poland
 
  During 2020 the first characterization of bunch length and bunch profile in the Solaris injector LINAC has been performed since the start of its operation. In absence of more sophisticated bunch length diagnostics, we have adopted an inversion algorithm applied to beam energy spectra. In practice, the method applies a transformation matrix which maps the particle energy into the particle longitudinal coordinate along the bunch. The construction of this matrix is made analytically, based on the solution of the Liouville equation for the study of the longitudinal beam dynamics. The analytic approach has been benchmarked with experimental measurements of the beam properties along the machine and cross-checked with other tools, as particle tracking and/or beam optics codes. The final results are presented. Moreover, a new diagnostic station at the end of the LINAC has been installed which will host experiments of coherent radiation emission that will be used to confirm the validity of our observations. Preliminary simulations of the coherent spectra are finally reported.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB277  
About • paper received ※ 18 May 2021       paper accepted ※ 17 June 2021       issue date ※ 12 August 2021  
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THPAB064 LUMOS: A Visible Diagnostic Beamline for the Solaris Storage Ring 3901
 
  • R. Panaś, A. Curcio, A.I. Wawrzyniak
    NSRC SOLARIS, Kraków, Poland
 
  LUMOS is a diagnostic beamline which operates in the visible region. It was installed in the Solaris storage ring during summer 2019. The first light was observed at the beginning of December 2019. During 2020 the beamline was commissioned and equipped with a streak camera setup. Currently, LUMOS allows to analyze far-field and near field images of synchrotron light for transverse beam profile measurements. Moreover, using the streak camera setup, it is also possible to investigate the bunch length, the filling pattern and the longitudinal beam profile changes with respect to the different condition (ramping, 3rd harmonic cavities tuning, etc.). During the presentation the optical setup to be presented along with the measurements conducted with it.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB064  
About • paper received ※ 19 May 2021       paper accepted ※ 07 July 2021       issue date ※ 01 September 2021  
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THPAB249 X-Ray Beam Position Monitor (XBPM) Calibration at NSRC Solaris 4292
 
  • M. Waniczek, A. Curcio, G.W. Kowalski, R. Panaś, A.I. Wawrzyniak
    NSRC SOLARIS, Kraków, Poland
 
  During the installation of Front-ends in sections 4th (XMCD beamline frontend) and 6th (PHELIX beamline frontend) at National Synchrotron Radiation Centre Solaris (NSRC Solaris), two units (one for each front end) of X-ray Beam Position Monitors (XBPM) have been installed as a diagnostic tool enabling for measurement of photon beam position. Hardware units of XBPM were manufactured, delivered, and eventually installed in Solaris by FMB Berlin. In order to get readouts of beam position from XBPM units, Libera Photon 2016 controller has been used as a complementary electronic device. Since XBPM units are supposed to be used along with the insertion device, an on-site Libera calibration was necessary. Libera’s calibration required few iterations of scans involving gap and phase movement of insertion devices at the 4th and 6th sections of the Solaris ring. The main focus was put on the derivation of Kx, and Ky coefficients. The content of this document describes step by step the procedure of Libera’s Kx, Ky coefficients value derivation at NSRC Solaris.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB249  
About • paper received ※ 19 May 2021       paper accepted ※ 17 July 2021       issue date ※ 13 August 2021  
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