Bezkorovaynyy, V.

Bleile, A.

Ceballos, J.

Fischer, E.

Floch, E.

Freisleben, W.

Maroussov, V.

Marzouki, F.

Meier, J. P.

Mierau, A.

Müller, H.

Raach, H.

Schnizer, P.

Seifert, F.

Stafiniak, A.

Sugita, K.

Szwangruber, P.

GSI Repository

Status of the Superconducting Magnets for FAIR∗E. Fischer† , V. Bezkorovaynyy, A. Bleile, J. Ceballos, E. Floch, W. Freisleben, V. Maroussov,F. Marzouki, H. Mu¨ller, J. P. Meier, A. Mierau, H. Raach, P. Schnizer, F. Seifert, A. Stafiniak,K. Sugita, and P. SzwangruberGSI, Darmstadt, GermanyIntroductionWithin this paper we report shortly on all the many dif-ferent activities of the group which now is mainly focusedon procuring the magnets and associated systems for theFAIR project.Superconducting MagnetsRapidly cycling magnets for SIS100Dipoles – production status and first tests The Firstof Series (FOS) dipole has been delivered [1, 2, 3] andits testing has been started. The magnetic field was mea-sured during the first ramp up followed by a first training ofthe superconducting magnet with the second quench abovenominal current and a current of 15.1 kA achieved.In parallel the different findings and according actionshave been discussed with the producer so that the SIS100dipole magnet series can be produced swiftly as soon as theFOS SIS100 dipole has been qualified.Quadrupole modules The quadrupole modules houseall superconducting magnets of the SIS100 along with thebeam vacuum chambers, beam position monitors and cryo-collimators.The design of the quadrupole magnet and all correc-tor magnets in the quadrupole modules is finalised towardmanufacturing. As the first of the SIS100 corrector mag-nets, the chromaticity sextupole magnet, has been con-structed in collaboration with JINR. The iron yoke hadbeen already prepared in the framework of the BMBF-JINR research contract. The coil will be wound and as-sembled into the iron yoke in the first half of 2014 at JINR.The test of the magnet will then follow.In parallel the design of the first of series quadrupolemodule (type 2.5, see also Fig. 1) has been detailed inten-sively including all integrated components: the magnets,the support system up to the high temperature supercon-ducting current leads. The suspension rods, connectingthe cold mass with the cryostat, were designed to achievea stability of the beam axis of ± 125 μm for the mainquadrupoles and ± 175 μm for the associated correctors[4]. The design was further checked and approved to be apressure vessel compliant with European standards.∗We acknowledge the support of the European Community-ResearchInfrastructure Activity under the FP7 program CRISP (Grant agreementno: 283745) Work Package 5. We acknowledge the support through theJINR–BMBF contract.† e.fischer@gsi.deFigure 1: CAD Model of the fully integrated SIS100quadrupole doublet module, type 2.5, including local cur-rent leads located in the central service port.An order was placed with Babcock Noell for detailing allfurther quadrupole modules (five arc types, two arc termi-nation types and two straight section types) along with themodules for injection and extraction, which shall be com-pleted beginning of 2015.Rapidly cycling magnets for SIS300Magnets with fields up to 4.5 T are needed for SIS300. Afirst model magnet of the fast ramped cos θ, 4.5 T SIS300magnets was developed and tested successfully in collabo-ration with INFN [5, 6]. It is now awaiting further tests andadditional measurements at GSI. A second collared coil,with enhanced field quality and conductor performance [7]is under construction [8]. After successful manufactur-ing and testing of two prototype quadrupoles and a steer-ing dipole for SIS300, the activities of IHEP (Protvino,Russia) concentrated on the development of wide aperturequadrupoles for FAIRs HEDgeHOB experiment.Magnets of the Super-FRSDipoles A collaboration agreement was signed be-tween GSI and CEA/Saclay concerning the procurementof the superconducting dipoles for the Super-FRS. Saclaywill take over the design finalisation next to the technicalfollow up. FAIR will then tender these dipoles. A readydesign is expected mid of 2014 together with a signed pro-duction contract in 2014.Multipletts The specifications of the multiplets of theSuper-FRS have been finished and the tendering processwas started by GSI. Offers arrived in December. Negoti-ations with the companies are now under way; a contractshould be signed within the first half of 2014. A generalGSI SCIENTIFIC REPORT 2013 FG-SIS100-01doi:10.15120/GR-2014-1-FG-SIS100-01 FAIR@GSI 323overview over the superconducting magnets of Super-FRScan be found in [9].Planning for TestingPrototype test facility activitiesThe upgrade of the prototype test facility for testing theSIS100 magnets, which has been started in 2012, was fi-nalised by the instalment of the new power converter ableto deliver 20 kA at 22 or 66 V next to the HTS currentleads. The power converter was brought into operation andtested successfully with a dummy load followed by testingand commissioning the HTS current leads up to 14 kA DCand 17 kA for slow ramps.Series test facility activitiesThe procurement of the large scale systems has beenstarted last year and finished with tendering the two powerconverters. Offers have been received with a tender to beawarded soon. In parallel the refurbishment of the build-ing, the fabrication of the cryogenic infrastructure and theprocurement of the current leads has been started.SIS100 string testA test string will be set up in the series test facility con-sisting of a dipole, quadrupole module and cryogenic sup-ply components. Dedicated components are being speci-fied with the assembly of the string foreseen in 2016. Thestring will provide information on the interplay of the com-ponents listed above next to training for the teams buildingand assembling the SIS100 machine.Testing Super-FRS Magnets at CERNThe large scale Super-FRS magnets will be tested atCERN. The number of test benches (3), the area and layoutof the test facility, have been defined and the measurementprogram has been evaluated. Based on these achievementsthe procurement of the infrastructure can start so that thetest facility will be ready when the first of series magnetsof the Super-FRS arrive.Current LeadsDedicated HTS current leads, required for testing theFOS dipole, were developed, procured and successfullytested. This successful test was a clear go for the seriesof current leads required for the series test facility and theSIS100 machine.Additionally low current leads are required for the cor-rector magnets installed within the SIS100 quadrupolemodule which are based on a conduction cooled warm endand a HTS superconductor connecting them to the cold end.The design of these current leads was completed this year.Electrical Systems and Magnet ProtectionThe existing quench detection setup was updated andtuned for testing and operating the HTS current leads andthe SIS100 FOS dipole. Moreover the production of thenew quench detection system for the dipole series test fa-cility has started now. Further the protection schemes forthe SIS100 dipole and quadrupole circuits have been op-timised. A set of standard tests and alternative dry testsbased on IEC 60851-5 were defined for testing the electri-cal insulation of superconducting wires.ConclusionThe procurements of the different superconducting mag-nets required for FAIR along with the associated auxiliarieshas been started. The telegraphic style of this paper reflectsthe many activities that are undertaken to realise the FAIRproject within the given scope and schedule.References[1] W. Walter et al., “Manufacturing of the first of series SIS100dipole magnet”, IPAC13 http://accelconf.web.cern.ch/AccelConf/IPAC2013/papers/moodb101.pdf[2] E. Fischer et al. “Status of the SC Magnets for the SIS100Synchrotron and the NICA Project”, IEEE T. Appl. Supercon.2013 (23) 4100504[3] P. Schnizer et al. “Design Optimization, Series Production,and Testing of the SIS100 Superconducting Magnets forFAIR”, IEEE T. Appl. Supercon. 2013 (23) 4101105[4] J.P. Meier et al. “Cryo-technical Design Aspects of the Su-perconducting SIS100 Quadrupole Doublet Modules”, CEC2013, to be published[5] G. Volpini et al., “AC Losses Measurement of the DISCO-RAP Model Dipole Magnet for the SIS 300 Synchrotron atFAIR” , MT 23, 2013, to be published in IEEE Trans. Appl.Superconductivity.[6] M. Sorbi et al., “Measurements and analysis of the SIS-300dipole prototype during the functional test at LASA”, MT 23,2013, to be published in IEEE Trans. Appl. Superconductiv-ity.[7] U. Gambardella et al., “An Experimental Study of Fine Fila-ments NmTi Strand for Fast Cycled Magnets”, MT 23, 2013,to be published in IEEE Trans. Appl. Superconductivity.[8] H.Mueller et al., “Next Generation of Fast-Cycled Dipolesfor SIS300 Synchrotron”, MT 23, 2013, to be published inIEEE Trans. Appl. Superconductivity.[9] H. Mu¨ller et al., “Status of the Super-FRS Magnet Devel-opment for FAIR”, IPAC 2013, http://accelconf.web.cern.ch/AccelConf/IPAC2013/papers/thpme005.pdf[10] K. Sugita et al. “String Test Preparation for the Supercon-ducting SIS100 Accelerator of FAIR”, IEEE Journal Appl.Supercon. to be published. Available at http://dx.doi.org/10.1109/TASC.2013.2278842FG-SIS100-01 GSI SCIENTIFIC REPORT 2013324 doi:10.15120/GR-2014-1-FG-SIS100-01

Status of the Superconducting Magnets for FAIR

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Status of the Superconducting Magnets for FAIR

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