Cold Mass Integration of the ATLAS Barrel Toroid Magnets at CERN

Rey, Jean‐Michel; Arnaud, M.; Berriaud, Christophe; Berthier, R.; Cazaux, S.; Dudarev, A.; Humeau, M.; Leboeuf, R.; Gourdin, J.-P.; Pes, C.; Kate, H.H.J. ten; Védrine, P.

doi:10.1109/tasc.2006.870838

Cited by 10 publications

(8 citation statements)

References 10 publications

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“…It is proposed to do the winding inside a coil casing, similarly to the ATLAS barrel toroids [352]. The winding procedure and tooling will be validated with a winding test using a dummy conductor.…”

Section: Anti-did Designmentioning

confidence: 99%

The International Linear Collider Technical Design Report - Volume 4: Detectors

Behnke

2013

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200

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Section: Anti-did Designmentioning

confidence: 99%

The International Linear Collider Technical Design Report - Volume 4: Detectors

Behnke

2013

180

200

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“…The coil and structural components are built in industry but cold mass [6], cryostat integration [7] and single coil tests before installation [8] were performed at CERN. The various steps in production and testing were successful and the toroid installation in the cavern, see Fig.…”

Section: Barrel Toroidmentioning

confidence: 99%

ATLAS Magnet System Nearing Completion

Kate

2008

IEEE Trans. Appl. Supercond.

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Abstract-The ATLAS Detector at the Large Hadron Collider at CERN is equipped with a superconducting magnet system that consists of a Barrel Toroid, two End-Cap Toroids and a Central Solenoid. The four magnets generate the magnetic field for the muonand inner tracking detectors, respectively. After 10 years of construction in industry, integration and on-surface tests at CERN, the magnets are now in the underground cavern where they undergo the ultimate test before data taking in the detector can start during the course of next year. The system with outer dimensions of 25 m length and 22 m diameter is based on using conduction cooled aluminum stabilized NbTi conductors operating at 4.6 K and 20.5 kA maximum coil current with peak magnetic fields in the windings of 4.1 T and a system stored magnetic energy of 1.6 GJ. The Barrel Toroid and Central Solenoid were already successfully charged after installation to full current in autumn 2006. This year the system is completed with two End Cap Toroids. The ultimate test of all toroids by which maximum mechanical and thermal loads are exerted is being prepared and will be performed late 2007 where after normal operation will commence. The status of the project in its nearly completed state as well as the first experience with testing and operation in the underground cavern are reported.

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“…The cold mass integration [22] and the cryostat integration were performed at CERN site [23], [24] during about 3 years and was completed in summer 2005. In parallel, all coils underwent an on-surface acceptance testing [25] and all past.…”

Section: End Cap Toroidsmentioning

confidence: 99%

ATLAS Superconducting Magnet System Status

Kate

2007

IEEE Trans. Appl. Supercond.

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The ATLAS particle detector presently being installed at the LHC at CERN requires magnetic field for charged particles bending in an 8000 m 3 volume. A system of four superconducting magnets was designed comprising a Central Solenoid making 2 T for the inner detector as well as two End-cap Toroids and a Barrel Toroid generating the about one tesla magnetic field for the muon detectors. The magnet system with a stored energy of 1.6 GJ is sized 22 m in diameter and 26 m in length. After about 15 years of design, construction in industry, system integration at CERN and installation in the underground cavern, the completion is imminent. At present, in August 2006, the Central Solenoid is operational, the Barrel Toroid installation complete and 4 K tests in progress and the 2 End Cap Toroids are being integrated and will soon be installed as well. Magnet services for vacuum, He cryogenics, power converters and circuits as well as controls and safety systems are operational. In the paper the status of the various magnets is reviewed and the first experience and test results with the magnets installed are reported.

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Cold Mass Integration of the ATLAS Barrel Toroid Magnets at CERN

Abstract: The paper describes the design of the system as well as the problems occurred during the assembling of the 8 superconducting ATLAS coils and the ATLAS B0 prototype coil, and the behavior of the Barrel Toroid coils with respect to this prestress during the cold tests.

Cited by 10 publications

References 10 publications

The International Linear Collider Technical Design Report - Volume 4: Detectors

The International Linear Collider Technical Design Report - Volume 4: Detectors

ATLAS Magnet System Nearing Completion

ATLAS Superconducting Magnet System Status

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