Author: Grenard, J.L.
Paper Title Page
WEPAB361 New Generation CERN LHC Injection Dump - Assembly and Installation (TDIS) 3548
 
  • D. Carbajo Perez, E. Berthomé, C. Bertone, N. Biancacci, C. Bracco, G. Bregliozzi, B. Bulat, C. Cadiou, M. Calviani, G. Cattenoz, A. Cherif, P. Costa Pinto, A. Dallocchio, M. Di Castro, P. Fessia, M.I. Frankl, R. Franqueira Ximenes, J.-F. Fuchs, H. Garcia Gavela, J.-M. Geisser, L. Gentini, S.S. Gilardoni, M.A. Gonzalez De La Aleja Cabana, J.L. Grenard, J.M. Heredia, S. Joly, A. Lechner, J. Lendaro, J. Maestre, E. Page, M. Perez Ornedo, A. Perillo-Marcone, D. Pugnat, E. Rigutto, B. Salvant, A. Sapountzis, K. Scibor, R. Seidenbinder, J. Sola Merino, M. Taborelli, E. Urrutia, A. Vieille, C. Vollinger, C. Yin Vallgren
    CERN, Geneva, Switzerland
  
  Funding: Work supported by the Hilumi Project
Dur­ing CERN’s LS2, sev­eral up­grades were per­formed to beam in­ter­cept­ing de­vices in the frame­work of the HL-LHC Pro­ject. Up­graded equip­ment in­cludes two in­ter­nal beam dumps (TDIS) in­tended for ma­chine pro­tec­tion lo­cated at the in­jec­tion points from the SPS to the LHC. These two de­vices have been as­sem­bled, tested, and in­stalled around LHC Point 2 and Point 8 and are cur­rently ready to get com­mis­sioned with the beam. They are 5.8m-long, three-mod­ule-seg­mented vac­uum cham­bers, with large aper­ture to ac­com­mo­date the in­jected and cir­cu­lat­ing beam and equipped with ab­sorb­ing ma­te­ri­als, These com­prise graphite and higher Z al­loys that are em­bed­ded on sub-as­sem­blies re­in­forced with back-stiff­en­ers made of TZM. The cur­rent con­tri­bu­tion cov­ers three main mat­ters. First, it de­tails the TDIS de­sign and its key tech­ni­cal fea­tures. The sec­ond topic dis­cussed is the out­come of an ex­per­i­ment where a pro­to­type mod­ule was tested under high-en­ergy beam im­pacts at CERN’s Hi­Rad­Mat fa­cil­ity. To con­clude it is pre­sented the re­turn of ex­pe­ri­ence from the pre-se­ries con­struc­tion, val­i­da­tion and in­stal­la­tion in the LHC tun­nel. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB361  
About • paper received ※ 18 May 2021       paper accepted ※ 11 June 2021       issue date ※ 17 August 2021  
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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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WEPAB366 Towards the Last Stages of the CERN’s AD-Target Area Consolidation Project and Recommissioning Plans to Resume Operation 3563
 
  • C. Torregrosa, C. Ahdida, A. Bouvard, A. Broche, S. Burger, M.E.J. Butcher, M. Calviani, V. Clerc, A. De Macedo, S. De Man, F.A. Deslande, M. Di Castro, T. Dobers, T. Feniet, R. Ferriere, E. Fornasiere, R. Franqueira Ximenes, T.J. Giles, J.L. Grenard, E. Grenier-Boley, G. Gräwer, M. Guinchard, M.D. Jedrychowski, K. Kershaw, B. Lefort, E. Lopez Sola, J.M. Martin Ruiz, A. Martínez Sellés, G. Matulenaite, C.Y. Mucher, A. Newborough, M. Perez Ornedo, E. Perez-Duenas, A. Perillo-Marcone, L. Ponce, N. Solieri, M.B. Szewczyk, P.A. Thonet, M.A. Timmins, A. Tursun, W. Van den Broucke, F.M. Velotti, C. Vendeuvre, V. Vlachoudis
    CERN, Meyrin, Switzerland
  • J.C. Espadanal
    LIP, Lisboa, Portugal
  
  An­tipro­tons are pro­duced at CERN at the An­tipro­ton De­cel­er­a­tor (AD) Tar­get Area by im­pact­ing 26 GeV/c pro­ton beams onto a fixed tar­get. Fur­ther col­lec­tion, mo­men­tum se­lec­tion, and trans­port of the sec­ondary par­ti­cles - in­clud­ing an­tipro­tons - to­wards the AD ring is re­alised by a 400 kA pulsed mag­netic horn and a set of mag­netic dipoles and quadrupoles. A major con­sol­i­da­tion of the area - in op­er­a­tion since the 80s - has taken place dur­ing the CERN Long Shut­down 2 (2019-2021). Among other ac­tiv­i­ties, such up­grade in­cluded: (i) In­stal­la­tion of a new air-cooled tar­get de­sign and man­u­fac­tur­ing of a new batch of mag­netic horns, in­clud­ing a sur­face puls­ing test-bench for their val­i­da­tion and fine-tun­ing (ii) In­stal­la­tion of a new po­si­tion­ing and main­te­nance sys­tem for the tar­get and horn (iii) Re­fur­bish­ment and de­con­t­a­m­i­na­tion of the Tar­get Area and its equip­ment, (iv) Con­struc­tion of a new sur­face ser­vice build­ing to house new nu­clear ven­ti­la­tion sys­tems. This con­tri­bu­tion pre­sents an overview of such ac­tiv­i­ties and les­son learnt. In ad­di­tion, it pro­vides the lat­est re­sults from re­frac­tory met­als R&D for the an­tipro­ton tar­get and a sum­mary of the recom­mis­sion­ing and op­ti­miza­tion plans.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB366  
About • paper received ※ 18 May 2021       paper accepted ※ 21 June 2021       issue date ※ 01 September 2021  
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