Author: Rodriguez Paramo, .A.    [Rodríguez Páramo, Á.]
Paper Title Page
TUPOJO06 Design and Test of Beam Diagnostics Equipment for the FAIR Proton Linac 348
 
  • T. Sieber, P. Forck, C.M. Kleffner, S. Udrea
    GSI, Darmstadt, Germany
  • I. Bustinduy, Á. Rodríguez Páramo
    ESS Bilbao, Zamudio, Spain
  • J. Herranz
    Proactive Research and Development, Sabadell, Spain
  • A. Navarro Fernandez
    CERN, Meyrin, Switzerland
 
  A ded­i­cated pro­ton in­jec­tor Linac (pLinac) for the Fa­cil­ity of An­tipro­ton and Ion Re­search (FAIR) at GSI, Darm­stadt, is cur­rently under con­struc­tion. It will pro-vide a 68 MeV, up to 70 mA pro­ton beam at a duty cycle of max. 35µs / 4 Hz for the SIS18 syn­chro­tron, using the UNI­LAC trans­fer beam­line. After fur­ther ac­cel­er­a­tion in SIS100, the pro­tons are mainly used for an­tipro­ton pro­duc­tion at the An­tipro­ton An­ni­hi­la­tion Darm­stadt (PANDA) ex­per­i­ment. The Linac will op­er­ate at 325 MHz and con­sists of a novel so called ’Lad­der’ RFQ type, fol­lowed by a chain of CH-cav­i­ties, par­tially cou­pled by rf-cou­pling cells. In this paper we pre­sent the beam di­ag­nos­tics sys­tem for the pLinac with spe­cial em­pha­sis on the Sec­ondary Elec­tron Emis­sion (SEM) Grids and the Beam Po­si­tion Mon­i­tor (BPM) sys­tem. We also de­scribe de­sign and sta­tus of our di­ag­nos­tics test­bench for step­wise Linac com­mis­sion­ing, which in­cludes an en­ergy spec­trom­e­ter with as­so­ci­ated op­ti­cal sys­tem. The BPMs and SEM grids have been tested with pro­ton and argon beam dur­ing sev­eral beam­times in 2022. The re­sults of these ex­per­i­ments are pre­sented.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOJO06  
About • Received ※ 24 August 2022 — Revised ※ 01 September 2022 — Accepted ※ 02 September 2022 — Issue date ※ 07 September 2022
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TUPOPA03 Status and RF Devopments of ESS Bilbao RFQ 410
 
  • N. Garmendia, I. Bustinduy, A. Conde, P.J. González, A. Kaftoosian, J. Martin, S. Masa, J.L. Muñoz, Á. Rodríguez Páramo
    ESS Bilbao, Zamudio, Spain
 
  Within the frame­work of the plans for study of a light-ion lin­ear ac­cel­er­a­tor, ESS Bil­bao is man­u­fac­tur­ing a radio fre­quency quadru­pole (RFQ) aimed at ac­cel­er­at­ing up to 3 MeV the pro­tons gen­er­ated in the ion source. The progress made and the dif­fi­cul­ties en­coun­tered with the RFQ are dis­cussed in this paper. A power cou­pler proto-type for the RFQ has been de­vel­oped while sev­eral me-chan­i­cal con­straints were also stud­ied in the final cou-pler. This pro­to­type op­er­ates at a lower power, then it can work using PEEK win­dow for the vac­uum in­ter­face and it does not re­quire nei­ther braz­ing nor cool­ing sys­tem. Also, a com­plete RF test stand is being im­ple­mented to per­form the high-power con­di­tion­ing in trav­el­ing and stand­ing wave mode, to ver­ify the power han­dling capa-bil­ity of the cou­pler and its ther­mal be­hav­iour. The RF test stand, based on EPICS en­vi­ron­ment, can pro­vide up to 2 MW peak power at 352.2 MHz in a pulse op­er­a­tion of 14 Hz and a duty cycle of 4.9%.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOPA03  
About • Received ※ 09 August 2022 — Revised ※ 28 August 2022 — Accepted ※ 30 August 2022 — Issue date ※ 02 September 2022
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)