Speaker
Description
New beam dumps have been developed for the Isotope mass Separator On-Line facility (ISOLDE) at CERN, as part of the ISOLDE Beam Dump Replacement and Sustainability (IBDRS) project. The new design is engineered to ensure an operational lifetime of 30 years and, as by-product, to accommodate the planned doubling of beam power. The absorber assembly consists of water-cooled slices of cladded CuCr1Zr and pure copper. The cladding consists of an encapsulation of 316LN stainless steel, diffusion bonded to the cuprous core by means of Hot Isostatic Pressing (HIP). The cladded blocks are enclosed within a 316 LN stainless steel vessel, which allows the use of pressurised water to cool the dump.
Extensive Monte Carlo and thermo-mechanical studies were conducted to evaluate temperature and stress distribution under nominal and accidental beam conditions, as well as the fatigue lifetime and cooling requirements. Prototyping of the cladded blocks have been produced successfully. This contribution presents the conceptual design, which employs advanced manufacturing methods to provide a sustainable and robust solution for the future ISOLDE beam dumps.
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