Final design of the CMS solenoid cold mass

• Published in: IEEE transactions on applied superconductivity Vol. 10; no. 1; pp. 407 - 410
• Main Authors: Kircher, F., Bredy, P., Calvo, A., Cure, B., Campi, D., Desirelli, A., Fabbricatore, P., Farinon, S., Herve, A., Horvath, I., Klioukhine, V., Levesy, B., Losasso, M., Lottin, J.P., Musenich, R., Pabot, Y., Payn, A., Pes, C., Priano, C., Rondeaux, F., Sgobba, S.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.03.2000; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Aluminium; Aluminum; Applied sciences; Boring; Collision mitigation; Conducting materials; Conductors; Conductors (devices); Cooling; Electrical engineering. Electrical power engineering; Electromagnets; Exact sciences and technology; Experimental methods and instrumentation for elementary-particle and nuclear physics; Extrapolation; Frozen; Large Hadron Collider; Magnetic materials; Mesons; Modules; Nuclear physics; Physics; Radiation detectors; Radiation detectors, dosimeters; Solenoids; Superconducting device characterization, design, and modeling; Superconductivity; Various equipment and components; Winding; Superconducting magnet; System design; High energy physics; Solenoid; Particle detector
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/77.828259

The 4 T, 12.5 m long, 6 m bore diameter superconducting solenoid for the CMS (Compact Muon Solenoid) experiment at LHC will be the largest and the most powerful superconducting solenoid ever built. Part of the CMS design is based on that of previous large superconducting solenoids-the use of a high purity aluminium stabilized conductor, a compact impregnated winding with indirect cooling and quench back protection process. However, the dimensions and the performances of this solenoid have imposed solutions which are more than extrapolations of the previous ones : the use of a mechanically reinforced conductor and a five module winding, each module being made of four layers, internally wound. This design, which is now frozen, relies on numerous magnetic, mechanical and thermal calculations, on various experimental tests (characterization of structural and insulating materials, electrical joints...) and specific mock-ups. Two pre-industrialization programs, concerning the conductor and the winding process have also been carried out with industrial partners to support the foreseen solutions. Both the final design and the experimental results obtained to validate this design are presented in this paper.