Author: Maekawa, F.M.
Paper Title Page
MOPAB246 Design of the MEBT for the JAEA-ADS Project 790
 
  • B. Yee-Rendón, Y. Kondo, F.M. Maekawa, S.I. Meigo, J. Tamura
    JAEA/J-PARC, Tokai-mura, Japan
  
  The Medium En­ergy Beam Trans­port (MEBT) will trans­port a CW pro­ton beam with a cur­rent of 20 mA and en­ergy of 2.5 MeV from the exit of the nor­mal con­duct­ing Ra­diofre­quency Quadru­pole (RFQ) to the su­per­con­duct­ing Half-Wave res­onator (HWR) sec­tion. The MEBT must pro­vide a good match­ing be­tween the RFQ and HWR, ef­fec­tive con­trol of the emit­tance growth and the halo for­ma­tion, enough space for all the beam di­ag­nos­tics de­vices, among oth­ers. This work re­ports the first lat­tice de­sign and the beam dy­nam­ics stud­ies for the MEBT of the JAEA-ADS.  
poster icon Poster MOPAB246 [0.827 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB246  
About • paper received ※ 10 May 2021       paper accepted ※ 02 June 2021       issue date ※ 19 August 2021  
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MOPAB247 Multipacting Studies for the JAEA-ADS Five-Cell Elliptical Superconducting RF Cavities 793
 
  • B. Yee-Rendón, Y. Kondo, F.M. Maekawa, S.I. Meigo, J. Tamura
    JAEA/J-PARC, Tokai-mura, Japan
  • E. Cicek
    KEK, Ibaraki, Japan
  
  The Five-cell El­lip­ti­cal Su­per­con­duct­ing Ra­dio-Fre­quency Cav­i­ties (SRFC) pro­vide the final ac­cel­er­a­tion in the JAEA-ADS linac (from 208 MeV to 1.5 GeV); thus, their per­for­mance is es­sen­tial for the suc­cess of the JAEA-ADS pro­ject. After their op­ti­miza­tion of the cav­ity geom­e­try to achieve a high ac­cel­er­a­tion gra­di­ent with lower elec­tro­mag­netic peaks, the next step in the R&D strat­egy is the ac­cu­rate es­ti­ma­tion of beam-cav­ity ef­fects which can af­fect the per­for­mance of the cav­i­ties. To this end, mul­ti­pact­ing stud­ies were de­vel­oped to in­ves­ti­gate its ef­fect in the cav­ity op­er­a­tion reg­i­men and find coun­ter­mea­sures. The re­sults of this study will help in the de­vel­op­ment of the SRFC mod­els and in the con­sol­i­da­tion of the JAEA-ADS pro­ject.  
poster icon Poster MOPAB247 [0.599 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB247  
About • paper received ※ 10 May 2021       paper accepted ※ 07 June 2021       issue date ※ 28 August 2021  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)