Author: Herty, A.
Paper Title Page
TUPAB308 Mechanical Consolidation of the LHC Inner Triplet Magnet Supporting System for Remote Alignment 2207
 
  • F. Micolon, N. Bourcey, J-B. Deschamps, A. Herty, S. Le Naour, T. Mikkola, V. Parma, D. Ramos, V. Rude, M. Sosin
    CERN, Meyrin, Switzerland
  
  Given the high ra­di­a­tion area and the tight align­ment tol­er­ances, the LHC inner triplet mag­nets were de­signed to be re­aligned re­motely using mo­tor­ized sup­port­ing jacks. How­ever, dur­ing run 2 the LHC triplet re­align­ment sys­tem started to show an un­ex­pected be­hav­ior with er­ratic load vari­a­tions on the mag­net sup­port­ing jacks when op­er­ated. It was then de­cided to freeze any fur­ther re­align­ment of the LHC triplet mag­net for the re­main­der of the run. Sub­se­quently, a pro­ject team was set up at CERN to un­der­stand bet­ter the con­di­tions lead­ing to such un­ex­pected be­hav­ior and to study and pro­pose a tech­ni­cal con­sol­i­da­tion for the re­align­ment sys­tem of the LHC triplet mag­net. A fully in­stru­mented mag­net string using LHC triplet spare mag­nets was as­sem­bled and used at CERN to pro­vide a re­al­is­tic test bench for this study. This paper re­ports on the work un­der­taken to study the triplet mag­net over­all re­align­ment kine­matic, the find­ings on the read­just­ment sys­tem mal­func­tion and de­tails the con­sol­i­da­tion so­lu­tion im­ple­mented for the next LHC run  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB308  
About • paper received ※ 18 May 2021       paper accepted ※ 07 June 2021       issue date ※ 18 August 2021  
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WEPAB376 The Inner Triplet String Facility for HL-LHC: Design and Planning 3592
 
  • M.B. Bajko, S. Bertolasi, C. Bertone, S. Blanchard, D. Bozzini, O.S. Brüning, P. Cruikshank, D. De Luca, N. Dos Santos, F. Dragoni, N. Heredia Garcia, A. Herty, A. Kosmicki, S. Le Naour, W. Maan, A. Martínez Sellés, P. Martinez Urios, P. Orlandi, A. Perin, M. Pojer, F. Rodriguez-Mateos, G. Rolando, L. Rossi, H. Thiesen, E. Todesco, E. Vergara Fernandez, D. Wollmann, S. Yammine, J.J. Zawilinski, M. Zerlauth
    CERN, Meyrin, Switzerland
  
  In the frame­work of the HL-LHC pro­ject, full-scale in­te­gra­tion and op­er­a­tional tests of the su­per­con­duct­ing mag­net chain, from the inner triplet quadrupoles up to the first sep­a­ra­tion/re­com­bi­na­tion di­pole, are planned in con­di­tions as sim­i­lar as pos­si­ble to the final set-up in the LHC tun­nel. The IT String in­cludes all of the re­quired sys­tems for op­er­a­tion at nom­i­nal con­di­tions, such as vac­uum, cryo­gen­ics, warm and cold pow­er­ing equip­ment, and pro­tec­tion sys­tems. The IT String is in­tended to be both an as­sem­bly, and an in­te­gra­tion test stand, and a full re­hearsal of the sys­tems work­ing in uni­son. It will, closely re­pro­duc­ing the me­chan­i­cal, elec­tri­cal, and thermo-hy­draulic in­ter­faces of the final in­stal­la­tion, as well as al­low­ing a full re­hearsal of the sys­tems work­ing in uni­son. This paper de­scribes the con­cep­tual de­sign, the test stand’s ref­er­ence con­fig­u­ra­tion, and the main goals. It also sum­ma­rizes the sta­tus of the main ac­tiv­i­ties, in­clud­ing the de­tailed de­sign of the test in­fra­struc­ture, pro­cure­ment of main equip­ment, the base­line in­stal­la­tion sched­ule, and major mile­stones. The first ver­sion of the ex­per­i­men­tal pro­gram and the as­so­ci­ated plan­ning are also pre­sented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB376  
About • paper received ※ 19 May 2021       paper accepted ※ 22 July 2021       issue date ※ 22 August 2021  
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