35 research outputs found

    Assembly Concept and Technology of the ATLAS Barrel Toroid

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    ATLAS detector and physics performance: Technical Design Report, 1

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    Design optimisation of the ATLAS barrel toroid structure-the warm structure

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    The magnetic bending of muon tracks for the ATLAS Muon Spectrometer is provided by the large air-core toroid magnets. The Barrel Toroid structure, named the warm structure, is an open structure inside which the muon chambers are installed. The physics performance of the muon spectrometer imposes stringent requirements on the design of the warm structure. It should support the muon chambers with required precision and stability, the deformation of the structure must be minimised. At the same time, the quantities of the materials used in the structure must also be minimised. Through extensive structural analyses, the design optimisation has been achieved to fit with the physics requirements. This paper gives an overview on the design considerations of the warm structure. (9 refs)

    Conceptual design of the CMS 4 Tesla solenoid

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    SIGLEAvailable at INIST (FR), Document Supply Service, under shelf-number : RM 1095 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

    Construction of the ATLAS B0 model coil

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    The B0 coil is a technological model for the ATLAS Barrel Toroid coils. The major concepts and the construction procedures are the same as those specified for the BT coils. So the manufacturing feasibility has been extensively proved and the technological developments have been carried out for the industrial production of the conductor, the welding technique of the coil casing, the prestress of the coil with bladders, the cold to warm supports, the construction and assembly of the cryostat. The paper illustrates all these phases

    CMS coil design and assembly

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    The Compact Muon Solenoid (CMS) is one of the general-purpose detectors to be provided for the LHC project at CERN. The design field of the CMS superconducting magnet is 4 T, the magnet length is 12.5 m, and the free bore is 6 m. The construction phase of the superconducting coil is now in full progress. Due to the size and characteristics of the coil (4 T central field, 2.7 GJ stored energy) , its design and the practical realization thereof require solutions which are more than extrapolations of those previously used for superconducting solenoids dedicated to physics experiments. This paper summarizes the coil design with a particular emphasis on the engineering aspects of its components, and their status. The developments that have been done to validate the solutions that are now finalized, will be reported. Finally, the assembly scenario of the coil, which will be mainly done in a vertical position before swiveling to a horizontal position, will be described. (16 refs)
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