Keyword: radio-frequency-quadrupole
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TUOXSP3 Evaluation of Geometrical Precision and Surface Roughness Quality for the Additively Manufactured Radio Frequency Quadrupole Prototype rfq, laser, operation, radio-frequency 787
 
  • T. Torims, D. Krogere, G. Pikurs, A. Ratkus
    Riga Technical University, Riga, Latvia
  • A. Cherif, M. Vretenar
    CERN, Meyrin, Switzerland
  • N. Delerue
    Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
  • M. Foppa Pedretti, M. Pozzi
    Rösler Italiana s.r.l., Concorezzo, Italy
  • S. Gruber, E. Lopez
    Fraunhofer IWS, Dresden, Germany
  • T. Otto
    TalTech, Tallinn, Estonia
  • M. Thielmann, P. Wagenblast
    TRUMPF, Ditzingen, Germany
  • M. Vedani
    POLIMI, Milano, Italy
  
  A mul­ti­dis­ci­pli­nary col­lab­o­ra­tion within the I.​FAST pro­ject teamed-up to de­velop ad­di­tive man­u­fac­tur­ing (AM) tech­nol­ogy so­lu­tions for ac­cel­er­a­tors. The first pro­to­type of an AM pure-cop­per radio fre­quency quadru­pole (RFQ) has been pro­duced, cor­re­spond­ing to 1/4 of a 4-vane RFQ*. It was op­ti­mised for pro­duc­tion with state-of-the-art laser pow­der bed fu­sion tech­nol­ogy. Geo­met­ri­cal pre­ci­sion and rough­ness of the crit­i­cal sur­faces were mea­sured. Alt-hough the ob­tained val­ues were be­yond stan­dard RFQ spec­i­fi­ca­tions, these first re­sults are promis­ing and con-firmed the fea­si­bil­ity of AM man­u­fac­tured com­plex cop-per ac­cel­er­a­tor cav­i­ties. There­fore, fur­ther post-pro­cess­ing tri­als have been con­ducted with the sam­ple RFQ to im-prove sur­face rough­ness. Al­go­rithms for the AM techno-log­i­cal processes have also been im­proved, al­low­ing for higher geo­met­ri­cal pre­ci­sion. This re­sulted in the de­sign of a full 4-vane RFQ pro­to­type. At the time of the paper sub­mis­sion the full-size RFQ is being man­u­fac­tured and will un­dergo through the strin­gent sur­face qual­ity meas-ure­ments. This paper is dis­cussing novel tech­no­log­i­cal de­vel­op­ments, is pro­vid­ing an eval­u­a­tion of the ob­tained sur­face rough­ness and geo­met­ri­cal pre­ci­sion as well as out­lin­ing the po­ten­tial post-pro­cess­ing sce­nar­ios along with fu­ture tests plans.
* Torims T, et al. First Proof-of-Concept Prototype of an Additive Manufactured Radio Frequency Quadrupole. Instruments. 2021; 5(4):35. https://doi.org/10.3390/instruments5040035 		 
slides icon Slides TUOXSP3 [10.031 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-TUOXSP3  
About • Received ※ 20 May 2022 — Revised ※ 11 June 2022 — Accepted ※ 12 June 2022 — Issue date ※ 10 July 2022
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TUOZGD1 Need for Portable Accelerators in Cultural Heritage proton, rfq, site, linac 808
 
  • T.K. Charles
    The University of Liverpool, Liverpool, United Kingdom
  • R.M. Bodenstein, A. Castilla
    JLab, Newport News, Virginia, USA
  
  Ion Beam Ac­cel­er­a­tors (IBA) cen­tres have pro­vided re­searchers with pow­er­ful tech­niques to analyse ob­jects of cul­tural sig­nif­i­cance in a non-de­struc­tive and non-in­va­sive man­ner. How­ever, in some cases it is not fea­si­ble to re­move an ob­ject from the field or mu­seum and trans­port it to the lab­o­ra­tory. In this con­tributed talk, we pre­sent as a man­ner of a short re­view, ex­am­ples of the ben­e­fits pro­vided from these tech­niques in the study of ma­te­r­ial cul­ture and dis­cuss the ini­tial steps to con­sider when in­ves­ti­gat­ing the fea­si­bil­ity of a com­pact ac­cel­er­a­tor that can be taken to sites of cul­tural sig­nif­i­cance for PIXE analy­sis. In par­tic­u­lar, we con­sider the ap­pli­ca­tion of a com­pact, ro­bust 2 MeV pro­ton ac­cel­er­a­tor that can be taken into the field to per­form PIXE mea­sure­ments on rock art. We de­tail the main chal­lenges and con­sid­er­a­tions for such a de­vice.  
slides icon Slides TUOZGD1 [7.603 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-TUOZGD1  
About • Received ※ 09 June 2022 — Revised ※ 13 June 2022 — Accepted ※ 15 June 2022 — Issue date ※ 09 July 2022
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WEPOMS049 ESS RFQ Electromagnetic Simulations Using CST Studio Suite rfq, simulation, cavity, radio-frequency 2365
 
  • E. Trachanas, A. Bignami, N. Gazis, B. Jones, R. Zeng
    ESS, Lund, Sweden
  • G. Fikioris, E.N. Gazis, A. Kladas
    National Technical University of Athens, Zografou, Greece
  • P. Hamel, O. Piquet
    CEA-IRFU, Gif-sur-Yvette, France
  
  The Radio Fre­quency Quadru­pole (RFQ) of the Eu­ro­pean Spal­la­tion Source (ESS), op­er­ates at 352.21 MHz with an RF pulse length of 3.2 ms and rep­e­ti­tion rate of 14 Hz. The RFQ fo­cuses, bunches and ac­cel­er­ates the 62.5 mA pro­ton beam from 75 keV up to 3.6 MeV. In an ef­fort to study and com­pare the re­sults from 3D elec­tro­mag­netic codes, dif­fer­ent mod­els of the RFQ were sim­u­lated with CST Stu­dio suite. This paper pre­sents the se­lec­tion of op­ti­mal pa­ra­me­ters for sim­u­la­tion of the RFQ cav­ity volt­age and com­par­i­son of the re­sults with the RFQ de­sign code Tou­tatis.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-WEPOMS049  
About • Received ※ 08 June 2022 — Revised ※ 09 June 2022 — Accepted ※ 15 June 2022 — Issue date ※ 17 June 2022
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)