Keyword: lattice
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MOP16 Time Resolved Dynamics of Transverse Resonance Island Buckets at SPEAR3 kicker, experiment, timing, resonance 62
  • K. Tian, W.J. Corbett, J. Kim, J.A. Safranek
    SLAC, Menlo Park, California, USA
  The Transverse Resonance Island Buckets have been studied at SPEAR3 as an option for timing experiment mode operation of this third generation synchrotron radiation facility. In this mode, with proper optics setting, the electron beam is populated to island orbits with the excitation from a kicker. In this paper, we will report the experimental observation of the beam dynamics with turn by turn beam position monitors and a fast gated camera. The results are also compared with tracking simulations.  
DOI • reference for this paper ※ doi:10.18429/JACoW-IBIC2022-MOP16  
About • Received ※ 07 September 2022 — Revised ※ 09 September 2022 — Accepted ※ 11 September 2022 — Issue date ※ 22 September 2022
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TUP09 Design of the Beam Position Monitor for SOLEIL II vacuum, impedance, site, synchrotron 233
  • M. El Ajjouri, F. Alves, A. Gamelin, N. Hubert
    SOLEIL, Gif-sur-Yvette, France
  The Beam Position Monitors for the SOLEIL low emittance upgrade project are in the design phase. Efforts are put on the minimization of the heat load on the button by optimizing the longitudinal impedance and the BPM materials. To validate the mechanical design and tolerances a first prototype has been manufactured and controlled. This paper presents the mechanical design of the BPM, the metrology of the prototype and the lessons learned from this prototyping phase.  
DOI • reference for this paper ※ doi:10.18429/JACoW-IBIC2022-TUP09  
About • Received ※ 10 September 2022 — Revised ※ 11 September 2022 — Accepted ※ 13 September 2022 — Issue date ※ 07 November 2022
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WEP07 Influence of the Beam Induced Irradiation on the Critical Current Phenomena in Superconducting Elements radiation, electron, FEL, ECR 391
  • J. Sosnowski
    NCBJ, Świerk/Otwock, Poland
  Currently developed nuclear accelerators more and more widely use superconducting elements especially in windings of superconducting electromagnets and current leads to them. These elements are however sensitive to the irradiation caused by primary beam as well as by secondary particles, as it is the case for PolFEL. In the paper it is discussed how this irradiation damages the subtle structure of superconducting materials, leading to columnar defects formation in 2D HTc superconductors. It is analysed, in which way created nano-sized structural defects influence the critical current properties of the superconducting materials, in the process of capturing of the magnetic pancake vortices. Various initial positions of the captured vortices are analysed; their movement leads to potential barrier variations. Influence of the irradiation effects on the current-voltage characteristics of superconductors are investigated then and maximal current density detected as the function of irradiation dose, nano-defects size and physical parameters as magnetic field and temperature.  
DOI • reference for this paper ※ doi:10.18429/JACoW-IBIC2022-WEP07  
About • Received ※ 07 September 2022 — Revised ※ 13 September 2022 — Accepted ※ 15 September 2022 — Issue date ※ 11 December 2022
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