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TY - CONF AU - Gallilee, M.A. AU - Chiggiato, P. AU - Costa Pinto, P. AU - Ferreira, L.M.A. AU - Lepeule, P. AU - Perez Espinos, J. AU - Prever-Loiri, L. AU - Sapountzis, A. ED - Petit-Jean-Genaz, Christine ED - Arduini, Gianluigi ED - Michel, Peter ED - Schaa, Volker RW TI - Development of Aluminium Vacuum Chambers for the LHC Experiments at CERN J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014 C1 - Dresden, Germany T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - Beam losses may cause activation of vacuum chamber walls, in particular those of the Large Hadron Collider (LHC) experiments. For the High Luminosity LHC, the activation of such vacuum chambers will increase. It is therefore necessary to use a vacuum chamber material which interacts less with the circulating beam. While beryllium is reserved for the collision point, a good compromise between cost, availability and transparency is obtained with aluminium alloys; such materials are a preferred choice with respect to austenitic stainless steel. Manufacturing a thin-wall aluminium vacuum chamber presents several challenges as the material grade needs to be machinable, weldable, leak-tight for small thicknesses, and able to withstand heating to 250°C for extended periods of time. This paper presents some of the technical challenges during the manufacture of these vacuum chambers and the methods for overcoming production difficulties, including surface treatments and NEG thin-film coating. PB - JACoW CP - Geneva, Switzerland SP - 2354 EP - 2356 KW - vacuum KW - experiment KW - beam-losses KW - factory KW - electron DA - 2014/07 PY - 2014 SN - 978-3-95450-132-8 DO - 10.18429/JACoW-IPAC2014-WEPME040 UR - http://jacow.org/ipac2014/papers/wepme040.pdf ER -