Author: Grenier, D.
Paper Title Page
WEPAB365 CERN BDF Prototype Target Operation, Removal and Autopsy Steps 3559
 
  • R. Franqueira Ximenes, O. Aberle, C. Ahdida, P. Avigni, M. Battistin, L. Bianchi, L.R. Buonocore, S. Burger, J. Busom, M. Calviani, J.P. Canhoto Espadanal, M. Casolino, M. Di Castro, M.A. Fraser, S.S. Gilardoni, S. Girod, J.L. Grenard, D. Grenier, M. Guinchard, R. Jacobsson, M. Lamont, E. Lopez Sola, A. Ortega Rolo, A. Perillo-Marcone, Y. Pira, B. Riffaud, V. Vlachoudis, L. Zuccalli
    CERN, Geneva, Switzerland
  
  The Beam Dump Fa­cil­ity (BDF), cur­rently in the study phase, is a pro­posed gen­eral-pur­pose fixed tar­get fa­cil­ity at CERN. Ini­tially will host the Search for Hid­den Par­ti­cles (SHiP) ex­per­i­ment, in­tended to in­ves­ti­gate the ori­gin of dark mat­ter and other weakly in­ter­act­ing par­ti­cles. The BDF par­ti­cle pro­duc­tion tar­get is lo­cated at the core of the fa­cil­ity and is em­ployed to fully ab­sorb the high in­ten­sity (400 GeV/c) Super Pro­ton Syn­chro­tron (SPS) beam. To val­i­date the de­sign of the pro­duc­tion tar­get, a down­scaled pro­to­type was tested with the beam at CERN in 2018 in the North Area pri­mary area in a ded­i­cated test at 35 kW av­er­age beam power. This con­tri­bu­tion de­tails the BDF pro­to­type tar­get op­er­a­tion, fully re­mote re­moval in­ter­ven­tion, and fore­seen post-ir­ra­di­a­tion ex­am­i­na­tion plans.  
poster icon Poster WEPAB365 [1.691 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB365  
About • paper received ※ 18 May 2021       paper accepted ※ 15 June 2021       issue date ※ 25 August 2021  
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WEPAB368 Sigraflex® Studies for LHC CERN Beam Dump: Summary and Perspective 3571
 
  • J.M. Heredia, M. Calviani, R. Franqueira Ximenes, D. Grenier, K. Kershaw, A. Lechner, P. Andreu-Muñoz, F.-X. Nuiry, A. Perillo-Marcone, V. Rizzoglio, C. Torregrosa
    CERN, Meyrin, Switzerland
  • A. Alvaro
    SINTEF, Trondheim, Norway
  • F. Berto, S. Solfiti
    NTNU, Trondheim, Norway
  
  The Large Hadron Col­lider (LHC) beam dump (TDE) is es­sen­tial for safe and re­li­able op­er­a­tion of the col­lider. It ab­sorbs par­ti­cles ex­tracted from the ac­cel­er­a­tor when­ever re­quired. The orig­i­nal de­sign of the TDE dates from the mid 2000 and it is con­sti­tuted of an eight-me­ter-long cylin­dri­cal stain­less-steel tube, filled with low-Z car­bon-based ma­te­ri­als from dif­fer­ent grades and den­si­ties. The Sigraflex®, an ex­panded low-den­sity graphite, is em­ployed in the mid­dle sec­tion of the TDE core. Due to un­ex­pected be­hav­iour ob­served in the past LHC runs, sev­eral major up­grades were re­cently im­ple­mented in order for the TDE to be ready for LHC Run3 (2021-2024), where up to 555 MJ beam en­ergy is ex­pected to be dumped every few hours. Ac­cord­ing sim­u­la­tions, tem­per­a­tures in the Sigraflex core will reach lo­cally up to 1500°C in the reg­u­lar dump cases, and above 2300°C for fail­ure sce­nar­ios. The ob­jec­tive of this con­tri­bu­tion is to sum­ma­rize the LS2 hard­ware up­grades and the plan for the eval­u­a­tion of the Sigraflex per­for­mance dur­ing LHC Run3. This work will also de­tail the last ex­per­i­men­tal and nu­mer­i­cal find­ings ap­plied to the Sigraflex®, and pos­si­ble al­ter­na­tive ma­te­ri­als for the fu­ture.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB368  
About • paper received ※ 18 May 2021       paper accepted ※ 11 August 2021       issue date ※ 16 August 2021  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)