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Description
As part of the consolidation of CERN’s North Area (NA-CONS project), a dump located in the TT20 transfer line has been redesigned to comply with the higher beam intensities required for the future BDF/SHiP facility, and to improve its operational reliability. The new dump must be capable of dissipating up to 45 kW of steady state power generated by the slow extraction of 400 GeV protons from the SPS under various operational scenarios. In addition, it should also be able to withstand short, high intensity pulses during regular machine development phases. The dump core consists of graphite blocks clamped by actively cooled CuCr1Zr plates, and is enclosed by two shielding layers, steel and marble, for radiological protection. The design has been validated through combined Monte Carlo and thermo-mechanical analyses plus prototyping activities. Due to its significant length (4 m), specific challenges related to manufacturing and procurement of compliant materials were addressed. This contribution presents the main stages of this upgrade, from conceptual design and analysis to fabrication and assembly.
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