Cryogenic system for a large superconducting magnet in space

Harrison, S.; Ettlinger, E.; Kaiser, G.; Blau, B.; Höfer, H.; Horváth, I.; Ting, Samuel C.C.; Ulbricht, J.; Viertel, G.

doi:10.1109/tasc.2003.812671

Cited by 17 publications

(6 citation statements)

References 10 publications

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“…The magnet is hosted inside a vacuum tank and operates at 1.8 K, indirectly cooled: the superconducting coils are connected to a superfluid cooling loop which provides the heat transfer to the helium reservoir [6]. The peculiar properties of superfluid helium make it an excellent cryogenic fluid for space applications: its very high thermal conductivity avoids thermal stratification and the vapor removal at zero gravity is possible using porous plugs as phase separators.…”

Section: The Ams Superconducting Magnetmentioning

confidence: 99%

Results From the Testing of the AMS Space Superconducting Magnet

Musenich

Becker

Bollweg³

et al. 2012

IEEE Trans. Appl. Supercond.

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The Alpha Magnetic Spectrometer (AMS) is a particle detector designed to search for anti-matter, dark matter and the origin of cosmic rays in space. A superconducting magnet has been developed to generate 0.78 T field at the center. The magnet system consists of a pair of large "dipole" coils together with two series of six racetrack coils, arranged circumferentially in order to minimize the stray field. The coils, series connected, are wound with an aluminum-stabilized mono-strand NbTi conductor and are cooled by a superfluid helium circuit. The superconducting magnet was successfully tested up to the operating current of 410 A, however the decision was taken to equip the spectrometer with a NdFeB permanent magnet in order to maximize the experiment life. The paper describes the results of the superconducting magnet tests and in particular analyses an anomalous increasing of the coil temperature during magnet charging.

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Section: The Ams Superconducting Magnetmentioning

confidence: 99%

Results From the Testing of the AMS Space Superconducting Magnet

Musenich

Becker

Bollweg³

et al. 2012

IEEE Trans. Appl. Supercond.

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“…The cryogenic system for the magnet contains a number of novel features that are required to satisfy the extreme challenges of operation in the zero-g space environment [3].…”

Section: Cryogenic Designmentioning

confidence: 99%

Integration and Testing of the Superconducting Magnet and Cryogenics for AMS

McIntyre

2010

IEEE Trans. Appl. Supercond.

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The Alpha Magnetic Spectrometer is a high-resolution cosmic-ray telescope for charged-particles and photons, to be staged on the International Space Station in 2010. A central element of the spectrometer is a 0.8 T, 1 m aperture superconducting dipole magnet. The windings employ Al-stabilized NbTi/Cu conductor and are conduction-cooled in a superfluid He cryostat. The cryogenics for the magnet employs a number of novel elements, indirect cooling using a serpentine heat pipe, thermomechanical pumping for re-cooling after quench and during current charging, capillary gathering of superfluid within the storage Dewar, and a porous-plug phase separator. The magnet is designed to operate in persistent mode, with provisions for disconnect/reconnect of current leads. The magnet and cryogenics have been built and integrated. The AMS magnet system has been commissioned into operation and operating characteristics have been evaluated during tests at CERN. Results of the commissioning and testing are presented. Lessons for future space applications of superconducting magnets will be discussed.

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“…The cooling of terrestrial superconducting magnets using liquid helium is a well-established technology, but there is much less experience of helium cryogenics in space. The cryogenic system for the AMS magnet combines technologies from terrestrial magnet cryogenics and space cryogenics to meet the particular challenges of the Space Shuttle launch and the environment of the ISS [8]. It maintains the magnet at a temperature of 1.8 K, under all operating conditions, for the duration of the experiment.…”

Section: The Cryomagnetmentioning

confidence: 99%

The Anti Matter Spectrometer (AMS-02): a Particle Physics Detector In Space

Battiston

2007

Nuclear Physics B - Proceedings Supplements

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Presenter: Roberto Battiston (r.battiston@tiscali.it) AMS-02 is a space borne magnetic spectrometer designed to measure with accuracies up to one part in 10 9 the composition of Cosmic Rays near Earth. With a large acceptance (5000 cm 2 sr), an intense magnetic field from a superconducting magnet (0.7 T) and an accurate particle identifications AMS-02 will provide the highest accuracy in Cosmic Rays measurements up to the TeV region. During a three years long mission

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Cryogenic system for a large superconducting magnet in space

Cited by 17 publications

References 10 publications

Results From the Testing of the AMS Space Superconducting Magnet

Results From the Testing of the AMS Space Superconducting Magnet

Integration and Testing of the Superconducting Magnet and Cryogenics for AMS

The Anti Matter Spectrometer (AMS-02): a Particle Physics Detector In Space

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