A Pulsed Superconducting Dipole Magnet for the Nuclotron

Smirnov, A.A.; Baldin, A.M.; Donyagin, A.M.; D'yachkov, E.I.; Eliseeva, I.A.; Khodzhibagiyan, Hamlet; Khukhareva, I.S.; Kovalenko, A. D.; Kulikov, Yu. V.; Kuryatnikov, B.K.; Kuryatnikov, E.K.; Kuzichev, V.N.; Makarov, L.G.; Nikitaev, P.I.; Sazonov, N.M.; Voevodin, M.A.; Zel'dovich, A.G.; Vasiliev, Andrey

doi:10.1051/jphyscol:1984156

Cited by 12 publications

(3 citation statements)

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“…The changing field creates AC losses, in particular due to the following sources: hysteresis losses in the iron yoke and eddy currents in the magnet ends, induced by the longitudinal magnetic field component B z , and eddy currents in the vacuum chamber [9]. Therefore the magnets have to be cooled reliably and efficiently Manuscript [5]; this is achieved by a forced two-phase helium flow within the Nuclotron-type cable [10]. The SIS100 dipole has a single layer coil [9], [11]- [14], which is cooled by a helium stream of ≈1 g/s flowing through the inner tube of the cable.…”

Section: Sis100 Dipolesmentioning

confidence: 99%

Fast-Ramped Superconducting Magnets for FAIR Production Status and First Test Results

Fischer

Schnizer

Sugita

et al. 2015

IEEE Trans. Appl. Supercond.

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The SIS100 synchrotron for heavy ion research is based on fast-ramped superconducting magnets. These superferric magnets are being designed, built, and tested. The first 3-m-long series dipole (maximum field of 1.9 T; ramp rate of 4 T/s) has been built. We present the test results obtained (quench training, magnetic field, ac loss, and repetition rate) and compare them with the predicted values and the required operation parameters.

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Section: Sis100 Dipolesmentioning

confidence: 99%

Fast-Ramped Superconducting Magnets for FAIR Production Status and First Test Results

Fischer

Schnizer

Sugita

et al. 2015

IEEE Trans. Appl. Supercond.

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“…A two-phase helium flow was chosen as a coolant after an experimental test of the cooling conditions on the model magnets [3][4][5]. In comparison with two-phase helium, a single-phase coolant (liquid helium) leads to a multiple increase of the helium flow through the magnet, some rise in cooling temperature and a drop in the stability of the SC winding to heat loads from radiation losses.…”

Section: Cooling Of the Magnetsmentioning

confidence: 99%

The Concept of a Superconducting Magnet System for the Nuclotron

Khodzhibagiyan

Smirnov

1988

Proceedings of the Twelfth International Cryogenic Engineering Conference Southampton, UK, 12–15 July 1988

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“…The first objects to be procured are the main dipoles. These dipole magnets are following a superferric magnet design pioneered for the Nuclotron [1,2,3]: these magnets are iron dominated but with a superconducting coil. The coil is based on the Nuclotron cable, which is a hollow tube with superconducting wires wrapped around it.…”

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confidence: 99%

The optimised sc dipole of SIS100 for series production

Roux

Mierau

Bleile

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. At the international facility for antiproton and ion research (FAIR) in Darmstadt, Germany, an accelerator complex is developed for fundamental research in various fields of modern physics. In the SIS100 heavy-ion synchrotron, the main accelerator of FAIR, superconducting dipoles are used to bend the particle beam. The fast ramped dipoles are 3 m long super-ferric curved magnets operated at 4.5 K. The demands on field homogeneity required for sufficient beam stability are given by ∆B/B ≤ ±6 · 10 −4 . An intense measurement program of the First of Series (FoS) dipole showed excellent quench behavior and lower than expected AC losses yielding the main load on the SIS100 cryoplant. The FoS is capable to provide a field strength of 1.9 T. However, with sophisticated measurement systems slight distortions of the dipole field were detected. Those effects were tracked down to mechanical inaccuracies of the yoke proven by appropriate geometrical measurements and simulations. After a survey on alternative fabrication techniques a magnet with a new yoke was built with substantial changes to improve the mechanical accuracy. Its characteristics concerning cryogenic losses, cold geometry and the resulting magnetic-field quality are presented and an outlook on the series production of superconducting dipoles for SIS100 is given.

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A Pulsed Superconducting Dipole Magnet for the Nuclotron

Cited by 12 publications

References 0 publications

Fast-Ramped Superconducting Magnets for FAIR Production Status and First Test Results

Fast-Ramped Superconducting Magnets for FAIR Production Status and First Test Results

The Concept of a Superconducting Magnet System for the Nuclotron

The optimised sc dipole of SIS100 for series production

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