Status of the Superconducting Magnets for FAIR

Fischer, Egbert; Schnizer, Pierre; Mierau, Anna; Sugita, Kei; Meier, J.; Bleile, A.; Müller, Hans Peter; Leibrock, H.; Macavei, Johann

doi:10.1109/tasc.2013.2289960

Cited by 12 publications

(7 citation statements)

References 25 publications

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“…The SIS100 dipole magnet with busbars and a vacuum chamber is mounted in a dipole cryostat, building together an SIS100 dipole module [3]. The magnet is a superferric-type magnet, consisting of a coil wound with a Nuclotron cable [3].…”

Section: A Fos Dipole Modulementioning

confidence: 99%

“…The magnet is a superferric-type magnet, consisting of a coil wound with a Nuclotron cable [3]. For the test string, the first-of-series (FoS) production dipole module will be integrated after the single-module testing [4].…”

Section: A Fos Dipole Modulementioning

confidence: 99%

“…Therefore, the quadrupole module is mechanically, electrically, and hydraulically much more complicated than the dipole module. In SIS100, nine types of the standard quadrupole-doublet modules and five special modules are foreseen [3].…”

Section: B Quadrupole-doublet Module (3-f2)mentioning

confidence: 99%

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String Test Preparation for the Superconducting SIS100 Accelerator of FAIR

Sugita

Schnizer

Meier

et al. 2014

IEEE Trans. Appl. Supercond.

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GSI plans to build a test string in the Series Test Facility (STF) for SIS100 at GSI. The SIS100 cryomagnetic modules and local cryocomponents will be assembled and intensively tested. The purpose of the string test is to confirm technical systems of cryogenic, vacuum, interlock and quench protection, and powering under normal and extreme conditions. Acquirement of knowledge through experiences in test string construction, commissioning, and testing is crucial for the SIS100 construction and operation. We present the planning and preparation status of the string test.

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Section: A Fos Dipole Modulementioning

confidence: 99%

Section: A Fos Dipole Modulementioning

confidence: 99%

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String Test Preparation for the Superconducting SIS100 Accelerator of FAIR

Sugita

Schnizer

Meier

et al. 2014

IEEE Trans. Appl. Supercond.

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“…The cooling power of the cryogenic system of SIS100 will be approximately 34.9 kW at 4 K [4]. It is expected that the major internal source of heat in the accelerator will be AC losses in the superconducting magnets [5]. The losses in the superconducting magnets were calculated numerically [6] and measured experimentally [7].…”

Section: Introductionmentioning

confidence: 99%

Archives of Electrical Engineering

Tomków,

Cholewiński,

Ciszek

et al. 2020

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Sections of the superconducting magnets of the SIS100 particle accelerator, under construction at the Facility for Antiproton and Ion Research (FAIR), the Society for Heavy Ion Research (GSI), Darmstadt, are going to be connected with the by-pass lines. Each line will be used to transfer a two-phase helium flow and an electric current. The electric current will be carried by four pairs of superconducting Nuclotron-type cables. Fast-ramping currents are expected to cause the generation of heat within the cables. In this work the results of a numerical thermal analysis of a bus-bar are presented. The amount of heat transferred from the environment was found based on geometric dimensions of the line and applied insulation. The amount of hysteresis loss, generated in the cable during the operation under most demanding regime of the operation of the accelerator, was calculated. According to the amount of the generated heat, the amount of the hysteresis loss is low in relation to the heat generated in the superconducting magnets. Also it was found that the cable used in the line still retains a large margin of current-carrying capacity.

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“…AC losses occurring in superconducting magnets were calculated analytically [9] and measured experimentally [10,11]. They were found to be major heat input for both SIS100 [12] and its planned extension, SIS300 [13]. Magnet design was significantly affected by thermal issues [14].…”

Section: Introductionmentioning

confidence: 99%

Heat generation by eddy currents in a shell of superconducting bus-bars for SIS100 particle accelerator at FAIR

Trojanowski

Ciszek

Chorowski

2017

Archives of Electrical Engineering

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Superconducting magnets in the SIS100 particle accelerator require the supply of liquid helium and electric current. Both are transported with by-pass lines designed at Wrocław University of Technology. Bus-bars used to transfer an electric current between the sections of the accelerator will be encased in a steel shell. Eddy currents are expected to appear in the shell during fast-ramp operation of magnets. Heat generation, which should be limited in any cryogenic system, will appear in the shell. In this work the amount of heat generated is assessed depending on the geometry of an assembly of the bus-bars and the shell. Numerical and analytical calculations are described. It was found that heat generation in the shell is relatively small when compared to other sources present in the accelerator and its value strongly depends on the geometry of the shell. The distribution of eddy currents and generated heat for different geometrical options are presented. Based on the results of the calculations the optimal design is proposed.

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Status of the Superconducting Magnets for FAIR

Cited by 12 publications

References 25 publications

String Test Preparation for the Superconducting SIS100 Accelerator of FAIR

String Test Preparation for the Superconducting SIS100 Accelerator of FAIR

Archives of Electrical Engineering

Heat generation by eddy currents in a shell of superconducting bus-bars for SIS100 particle accelerator at FAIR

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