Author: Gavela, D.
Paper Title Page
MOPOGE04 Cell Geometry Optimization for Dipole Kick Correction in a High-Frequency IH Structure 146
 
  • R. López López, P. Calvo, D. Gavela, J. Giner Navarro, G. Moreno, C. Oliver, J.M. Pérez Morales
    CIEMAT, Madrid, Spain
  • M.C. Battaglia, J.M. Carmona
    AVS, Elgoibar, Spain
  • A.M. Lombardi
    CERN, Meyrin, Switzerland
  
  Funding: CIEMAT
Given the asym­me­try in the stem con­fig­u­ra­tion of an IH-DTL struc­ture, an elec­tric di­pole com­po­nent is al­ways pre­sent be­tween drift tubes, and it is es­pe­cially sig­nif­i­cant for re­duced di­men­sions in high-fre­quency regimes. Here we study the ef­fect of dif­fer­ent mod­i­fi­ca­tions of the drift tubes geom­e­try of a 750 MHz IH-DTL to elim­i­nate the im­pact of the di­pole com­po­nent in the trans­verse beam dy­nam­ics. Track­ing sim­u­la­tions through a sin­gle cell are also per­formed to as­sess the out­comes in par­ti­cle’s tra­jec­tory off­set and angle. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOGE04  
About • Received ※ 24 August 2022 — Revised ※ 27 August 2022 — Accepted ※ 31 August 2022 — Issue date ※ 04 September 2022
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
MOPOGE05 Effect of High-Magnetic Field Region Geometry on the Efficiency of a 750 MHz IH Structure 150
 
  • G. Moreno, P. Calvo, D. Gavela, J. Giner Navarro, R. López López, C. Oliver, J.M. Pérez Morales
    CIEMAT, Madrid, Spain
  • M.C. Battaglia, J.M. Carmona
    AVS, Elgoibar, Spain
  • A.M. Lombardi
    CERN, Meyrin, Switzerland
  
  Funding: CIEMAT
High fre­quency struc­tures gen­er­ally trans­late to high ef­fi­ciency per­for­mances thanks to re­duced sur­faces of the inner cav­ity. Two round-pro­files geom­e­try and some vari­a­tions of two im­por­tant pa­ra­me­ters of a 750 MHz IH-DTL are pro­posed in this paper in order to im­prove shunt im­ped­ance per­for­mance re­gard­ing an ex­ist­ing so­lu­tion with flat-walled cav­ity de­vel­oped by CERN. The pro­posed de­signs are shaped such that they guar­an­tee an easy con­nec­tion of RF and vac­uum aux­il­iaries. Elec­tro­mag­netic sim­u­la­tions are checked with CST Mi­crowave Stu­dio. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOGE05  
About • Received ※ 20 August 2022 — Revised ※ 22 August 2022 — Accepted ※ 27 August 2022 — Issue date ※ 13 October 2022
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
TU2AA04 Commissioning of IFMIF Prototype Accelerator Towards CW Operation 319
 
  • K. Masuda, T. Akagi, A. De Franco, T. Ebisawa, K. Hasegawa, K. Hirosawa, J. Hyun, T. Itagaki, A. Kasugai, K. Kondo, K. Kumagai, S. Kwon, A. Mizuno, Y. Shimosaki, M. Sugimoto
    QST Rokkasho, Aomori, Japan
  • T. Akagi, Y. Carin, F. Cismondi, A. De Franco, D. Gex, K. Hirosawa, K. Kumagai, S. Kwon, K. Masuda, I. Moya, F. Scantamburlo, M. Sugimoto
    IFMIF/EVEDA PT, Aomori, Japan
  • L. Antoniazzi, L. Bellan, M. Comunian, A. Facco, E. Fagotti, F. Grespan, A. Palmieri, A. Pisent
    INFN/LNL, Legnaro (PD), Italy
  • F. Arranz, B. Brañas, J. Castellanos, D. Gavela, D. Jimenez-Rey, Á. Marchena, J. Mollá, P. Méndez, O. Nomen, C. Oliver, I. Podadera, D. Regidor, A. Ros, V. Villamayor, M. Weber, C. de la Morena
    CIEMAT, Madrid, Spain
  • N. Bazin, B. Bolzon, N. Chauvin, S. Chel, J. Marroncle
    CEA-IRFU, Gif-sur-Yvette, France
  • P. Cara, Y. Carin, F. Cismondi, G. Duglue, H. Dzitko, D. Gex, A. Jokinen, I. Moya, G. Phillips, F. Scantamburlo
    F4E, F4E, Germany
  • A. Mizuno
    JASRI/SPring-8, Hyogo-ken, Japan
  • Y. Shimosaki
    KEK, Ibaraki, Japan
  
  Con­struc­tion and val­i­da­tion of the Lin­ear IFMIF Pro­to­type Ac­cel­er­a­tor (LIPAc) have been con­ducted under the frame­work of the IFMIF/EVEDA pro­ject. The LIPAc con­sists, in its final con­fig­u­ra­tion, of a 100 keV in­jec­tor and the world longest 5 MeV RFQ ac­cel­er­a­tor, fol­lowed by a MEBT with high space charged and beam loaded re-buncher cav­i­ties, an HWR-SRF linac, HEBT with a Di­ag­nos­tic Plate, end­ing in a Beam Dump (BD) de­signed to stop the world high­est deuteron cur­rent of 125 mA CW at 9 MeV. The beam com­mis­sion­ing at a low duty cycle of ~0.1 % led to a suc­cess­ful RFQ ac­cel­er­a­tion of 125 mA and 5 MeV beam in 2019. The fol­low­ing beam com­mis­sion­ing phase was ini­ti­ated in July 2021 with a tem­po­rary trans­port line re­plac­ing the SRF linac. The major goals of this phase are to val­i­date the RFQ, MEBT and BD per­for­mances up to CW and to char­ac­ter­ize the beam prop­er­ties in prepa­ra­tion to the final con­fig­u­ra­tion with the SRF linac. This paper will pre­sent pro­gresses made in this phase so far, such as a low-cur­rent and low-duty beam com­mis­sion­ing com­pleted in Dec. 2021, CW op­er­a­tion cam­paign of the in­jec­tor to­wards the nom­i­nal beam cur­rent, and RF con­di­tion­ing of the RFQ to­wards CW.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TU2AA04  
About • Received ※ 27 August 2022 — Revised ※ 31 August 2022 — Accepted ※ 02 September 2022 — Issue date ※ 08 September 2022
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)