Author: Andersson, Å.
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MOPOPT022 Beam Dynamics of the Transparent Injection for the MAX IV 1.5 GeV Ring 284
 
  • M. Apollonio, Å. Andersson, M. Brosi, D.K. Olsson, P.F. Tavares, A.S. Vorozhtsov
    MAX IV Laboratory, Lund University, Lund, Sweden
 
  Following the successful operation of the Multipole Injection Kicker (MIK) in the MAX IV 3 GeV storage ring, we plan to introduce a similar device in the MAX IV 1.5 GeV ring. In order to assess the effectiveness of such device and to define its working parameters, we performed a series of studies aimed at understanding the beam dynamics related to the injection process. In this paper we describe the optimization of the MIK working parameters, we study the resilience to tune shifts for a chosen injection scheme and illustrate some tests conducted to evaluate the ring acceptance. We conclude with remarks about the effects of magnet errors on key performance parameters such as the injection efficiency and perturbations to the size and divergence of the stored beam and a brief discussion on future work.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-MOPOPT022  
About • Received ※ 08 June 2022 — Revised ※ 09 June 2022 — Accepted ※ 29 June 2022 — Issue date ※ 07 July 2022
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MOPOPT023 Improved Emittance and Brightness for the MAX IV 3 GeV Storage Ring 288
 
  • M. Apollonio, Å. Andersson, M. Brosi, R. Lindvall, D.K. Olsson, M. Sjöström, R. Svärd, P.F. Tavares
    MAX IV Laboratory, Lund University, Lund, Sweden
 
  At MAX IV Laboratory, the Swedish Synchrotron Radiation (SR) facility, the largest of two rings operates at 3 GeV with a bare lattice emittance of 330 pm rad. Upgrade plans are under consideration aiming at a gradual reduction of the emittance, in three stages: a short-term with an emittance reduction of 20% to 40%, a mid-term with an emittance reduction of more than 50% and a long-term with an emittance in the range of the diffraction limit for hard X-rays (10 keV). In this paper we focus on the short-term case, resuming previous work on a proposed lattice that can reach 270 pm rad emittance, with only minor modifications to the gradients of the magnets of the present ring, i.e. without any hardware changes and all within the present power supply limits. Linear lattice characterisation and calculations of key performance parameters, such as dynamic aperture and momentum aperture with errors, are described and compared to the present operating lattice. Experimental tests of injection into this lattice are also shown.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-MOPOPT023  
About • Received ※ 08 June 2022 — Revised ※ 17 June 2022 — Accepted ※ 27 June 2022 — Issue date ※ 29 June 2022
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