Design, Manufacture, and Test of the ATLAS Magnet System Run Down Units

Author

Baccaglioni, G. ; Cartegni, G. ; Cataneo, F. ; Volpini, G.

Author_Institution

LASA Lab., INFN-Milano, Milano

Volume

16

Issue

2

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

561

Lastpage

564

Abstract

The ATLAS Experiment at the LHC (CERN) has a Magnet System composed by one Barrel Toroid (BT) and two End Cap Toroids (ECT´s) powered in series at 20.5 kA with an overall stored energy of 1.5 GJ, and one Central Solenoid, operated at 7,600 A with a stored energy of 39 MJ. During the normal discharge the stored energy is dissipated inside external resistors and diodes (globally referred as Run Down Unit, RDU). Being critical for magnet safety the RDU was designed so as to operate also in case of severe fault conditions. This paper presents the details of the design and the tests performed to develop each component and to assess their behavior under normal and fault conditions. The final test for commissioning inside ATLAS underground cavern are in progress

Keywords

accelerator magnets; position sensitive particle detectors; superconducting magnets; superconducting particle detectors; ATLAS magnet system run down units; ATLAS underground cavern; CERN; LHC; barrel toroid; central solenoid; diodes; end cap toroids; external resistors; magnet safety; severe fault conditions; superconducting solenoid; Diodes; Electrical capacitance tomography; Large Hadron Collider; Manufacturing; Performance evaluation; Resistors; Safety; Solenoids; System testing; Toroidal magnetic fields;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2005.864250

Filename

1642911