Mechanical characterization and assessment of the CMS conductor

Author

Sequeira Tavares, S. ; Calvo, A. ; Desirelli, A. ; Sgobba, S. ; Horvath, I.

Author_Institution

CERN, Geneva, Switzerland

Volume

10

Issue

1

fYear

2000

fDate

3/1/2000 12:00:00 AM

Firstpage

399

Lastpage

402

Abstract

The Compact Muon Solenoid (CMS) is one of the experiments which are being designed in the framework of the Large Hadron Collider (LHC) project at CERN. The design field of the CMS magnet is 4 T, the magnetic length is 12.5m and the free aperture is 6 m in diameter. This is achieved with a 4 layer and 5 module superconducting Al stabilized coil, resulting into 20 lengths of conductor of 2.5 km each, energized at a nominal current of 20 kA at 4.5 K. One of the unique features of this thin solenoid is an Al-stabilized conductor reinforced by an Al-alloy. An extensive characterization of mechanical properties at room temperature and 4.2 K has been carried out in order to define the most appropriate alloy and temper for the reinforcement. The effect of the coil curing cycle on the alloy properties has been taken into account. This paper summarizes the main results of these tests.

Keywords

notch strength; particle calorimetry; solid scintillation detectors; superconducting coils; superconducting magnets; tempering; tensile strength; 4 T; CMS conductor; CMS magnet; Compact Muon Solenoid; LHC; Large Hadron Collider; coil curing cycle; mechanical characterization; mechanical properties; superconducting Al stabilized coil; temper; Apertures; Collision mitigation; Conductors; Large Hadron Collider; Mechanical factors; Mesons; Solenoids; Superconducting coils; Superconducting epitaxial layers; Superconducting magnets;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.828257

Filename

828257