Author: Yamakawa, E.
Paper Title Page
TUPAB186 Longitudinal Dynamics in the Prototype vFFA Ring for ISIS2 1834
 
  • D.J. Kelliher, J.-B. Lagrange, S. Machida, C.R. Prior, C.T. Rogers
    STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
  • A.P. Letchford, J. Pasternak
    STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
  • J. Pasternak
    Imperial College of Science and Technology, Department of Physics, London, United Kingdom
  • E. Yamakawa
    JAI, Egham, Surrey, United Kingdom
  
  A ver­ti­cal Fixed Field Ac­cel­er­a­tor (vFFA) is a can­di­date for a fu­ture high-power (MW-class) spal­la­tion source at ISIS. In order to as­sess the fea­si­bil­ity of this novel ring, a pro­to­type is cur­rently being de­signed. Here we con­sider the lon­gi­tu­di­nal dy­nam­ics in the pro­to­type ring. A key re­quire­ment of fu­ture neu­tron spal­la­tion sources is flex­i­bil­ity of op­er­a­tion to best serve mul­ti­ple tar­get sta­tions. Beam stack­ing al­lows a rapid cy­cling, high in­ten­sity ma­chine to op­er­ate at lower rep­e­ti­tion rates but with higher peak out­put. Here we show how beam stack­ing can be re­alised in the vFFA while min­imis­ing the peak RF volt­age re­quired.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB186  
About • paper received ※ 19 May 2021       paper accepted ※ 17 June 2021       issue date ※ 23 August 2021  
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TUPAB208 FETS-FFA Ring Study 1901
 
  • J.-B. Lagrange, D.J. Kelliher, A.P. Letchford, S. Machida, C.R. Prior, C.T. Rogers
    STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
  • S.J. Brooks
    BNL, Upton, New York, USA
  • C. Brown
    Brunel University, Middlesex, United Kingdom
  • J. Pasternak
    STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
  • J. Pasternak
    Imperial College of Science and Technology, Department of Physics, London, United Kingdom
  • E. Yamakawa
    JAI, Egham, Surrey, United Kingdom
  
  ISIS is the spal­la­tion neu­tron source at the Ruther­ford Ap­ple­ton Lab­o­ra­tory in the UK, pro­vid­ing a pro­ton beam with a power of 0.2~MW. De­tailed stud­ies are under way for a major up­grade, in­clud­ing the use of Fixed Field al­ter­nat­ing gra­di­ent Ac­cel­er­a­tor (FFA). A proof-of-prin­ci­ple FFA ring, called FETS-FFA is planned to in­ves­ti­gate the fea­si­bil­ity of this kind of ma­chine for the re­quired MW beam power. This paper dis­cusses the study of the FETS-FFA ring case.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB208  
About • paper received ※ 19 May 2021       paper accepted ※ 08 July 2021       issue date ※ 14 August 2021  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)