In this paper we give a first baseline of the interaction region. We discuss the main motivations that lead us to choose the technology, the combination of fields/gradients and lengths, the apertures, the quantity of superconductor, and the operational margin. Key elements are also the constraints given by the energy deposition in terms of heat load and radiation damage; we present the main features related to shielding and heat removal.
The Next European Dipole (NED) Joint Research Activity was launched on 1st January 2004 to promote the development of high performance Nb 3 Sn conductors in collaboration with European industry (aiming at a non-copper critical current density of 1500 A/mm 2 at 4.2 K and 15 T) and to assess the suitability of Nb 3 Sn technology to the next generation of accelerator magnets (aiming at an aperture of 88 mm and a conductor peak field of ~ 15 T). It is part of the Coordinated Accelerator Research in Europe (CARE) project, involves eight collaborators and is half-funded by the European Union. After briefly recalling the Activity organization, we report the main progress achieved over the last year, which includes: the manufacturing of a double-bath He II cryostat for heat transfer measurements through Nb 3 Sn conductor insulation, detailed quench computations for various NED-like magnet configurations, the award of two industrial subcontracts for Nb 3 Sn conductor development, the first results of a cross-calibration program of test facilities for Nb 3 Sn wire characterization, detailed investigations of the mechanical properties of heavily cold-drawn Cu/Nb/Sn composite wires and the preliminary assessment of a new insulation system based on polyimide-sized fiber glass tapes. Last, we briefly review the efforts of an ongoing Working Group on magnet design and optimization.
In this paper we outline the present status of the design studies for the high luminosity LHC, focusing on the choice of the aperture of the inner triplet quadrupoles. After reviewing some critical aspects of the design as energy deposition, shielding, heat load and protection, we present the main tentative parameters for building a 150 mm aperture Nb 3 Sn quadrupole, based on the experience gathered by the LARP program in the past several years.Presented at the Applied Superconductivity Conference 2012 (ASC 2012) 7-12 October 2012, Portland, OregonGeneva, Switzerland
CERN-ATS-2013-018January 2013 > REPLACE THESE LINES WITH YOUR PAPER ID NUMBER, E.G., AB-02 (DOUBLE-CLICK HERE) < Abstract-In this paper we outline the present status of the design studies for the high luminosity LHC, focusing on the choice of the aperture of the inner triplet quadrupoles. After reviewing some critical aspects of the design as energy deposition, shielding, heat load and protection, we present the main tentative parameters for building a 150 mm aperture Nb 3 Sn quadrupole, based on the experience gathered by the LARP program in the past several years.
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