IPAC2021 - Classification: MC7: Accelerator Technology / T10 Superconducting Magnets

Paper	Title	Page
TUXC01	Fabrication and Test Challenges of the SC Transport Solenoid for Mu2e Experiment
	M.J. Lamm, G. Ambrosio, K.E. Badgley, J.S. Brandt, D.A. Evbota, A. Hocker, V. Lombardo, T.H. Nicol, P. Schlabach Fermilab, Batavia, Illinois, USA
	Funding: Supported in part by FRA under DOE Contract DE-AC02-07CH11359 A muon transport system (TS) is being built for the Fermilab Mu2e Experiment. The system consists of 52 superconducting solenoid magnets organized into two separately powered and cryostated elements TSu/TSd. Each cryostated element is further segmented into seven test units that form the TSu/TSd cold mass. The s-shaped geometry of the transport as well as its magnetic coupling to adjacent solenoid elements provides challenging requirements for the system design and fabrication. The acceptance campaign for the 14 test units is nearly completed and one of the two cold masses has been fully mechanically assembled. After presenting an overview of the Mu2e solenoid system, we report on the fabrication and test challenges and progress on the TS system including quench performance and coil alignment.
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TUXC05	Production and testing of NICA collider magnets
	D. Nikiforov, H.G. Khodzhibagiyan, M.V. Petrov JINR, Dubna, Moscow Region, Russia Yu.G. Bespalov, S.A. Kostromin JINR/VBLHEP, Dubna, Moscow region, Russia
	The commissioning of the accelerating complex NICA (Nuclotron-based Ion Collider fAcility) will be carried out at the end of 2022. The NICA complex includes a heavy ion linear accelerator (HILAc) and three superconducting (SC) rings new Booster synchrotron (Booster), synchrotron - Nuclotron, and collider. Collider has a two-aperture structure and consists 327 SC magnets. The report presents the results of cryogenic tests of SC magnets on a cryogenic test bench, such as research quench histories of the SC coils, measurement static heat leak and dynamic heat releases, search cold leaks. More than 80% of the collider’s dipole magnets successfully passed cryogenic tests at the end of January 2021. The first successful cryogenic tests of quadrupole lenses with correcting SC magnets were carried out. Grant LHEP 21-103-02
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TUPAB372	Status of the Quadrupole Doublet Module Series Manfacturing	2388
	T. Winkler, A. Bleile, L.H.J. Bozyk, V.I. Datskov, J. Ketter, P. Kowina, J.P. Meier, N. Pyka, C. Roux, P.J. Spiller, K. Sugita, A. Waldt, St. Wilfert GSI, Darmstadt, Germany
	The 83 Quadrupole Doublet Modules (QDM) for the heavy-ion-synchrotron SIS100 of the FAIR project at GSI are highly integrated cryogenic modules containing multiple magnets. Each of eleven different QDM types consists of two units, where one unit consists of one quadrupole magnet as well as corrector magnets depending on the modules position in the accelerator Ion-Optical Lattice. Additionally, the QDMs contain cryogenic collimators, beam diagnostics, as well as cryogenic UHV beam pipes. The modules contain parts from multiple suppliers increasing the logistics behinds the QDMs design further. We present the process of the module integration, give details on the current integration status and present an outlook on the timeline for the QDM integration planning.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB372
About •	paper received ※ 18 May 2021 paper accepted ※ 02 June 2021 issue date ※ 21 August 2021
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TUPAB373	Design of a Delta-type Superconducting Undulator at the IHEP	2391
	J.H. Wei IHEP CSNS, Guangdong Province, People’s Republic of China C.D. Deng DNSC, Dongguan, People’s Republic of China L. Gong, X.Y. Li, X.C. Yang IHEP, Beijing, People’s Republic of China Y. Li DESY, Hamburg, Germany
	Undulators play an important role in the 4th generation radiation light source. In order to satisfy different requirements of the experiments, various undulator structures have been proposed. The Delta-type undulator can provide circular polarized radiation. Conventional undulators are usually made of permanent magnets, but the application of the superconducting technology in the undulator is developing quickly. Compared to the permanent magnet undulators, superconducting undulators can provide higher photon flux with the same magnetic pole gap and period length, especially when the period length is longer than 20 mm. An R&D project is underway to produce a protype of a Delta-type superconducting undulator with 28 mm long period and 12 mm gap at the IHEP. The structure design and the simulation results of the magnetic field are presented in this paper.
	Poster TUPAB373 [1.752 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB373
About •	paper received ※ 19 May 2021 paper accepted ※ 18 June 2021 issue date ※ 15 August 2021
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TUPAB374	Development of a Quench Detection System for the FAIR Superconducting Devices	2394
	V. Raginel, M. Dziewiecki, W. Freisleben, P.B. Szwangruber, L. Theiner GSI, Darmstadt, Germany
	The Facility for Antiproton and Ion Research (FAIR), which is presently under construction in Darmstadt (Germany), will incorporate a large variety of superconducting devices like magnets, currents leads and bus bars. These components depend on an active protection in case of a transition from superconducting to the resistive state, so-called quench. In this framework, a FAIR Quench Detection System (F-QDS) is being developed based on analog and digital electronics and will be implemented in several machines of the FAIR complex. This paper describes the development of the F-QDS. An overview of the F-QDS electronics is given followed by a description of the system integration to the infrastructure of various machines. Initial test results of the F-QDS prototype system are presented and discussed.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB374
About •	paper received ※ 25 May 2021 paper accepted ※ 05 July 2021 issue date ※ 22 August 2021
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TUPAB375	Commissioning and Operation of Superconducting Multipole Wiggler at Siam Photon Source	2398
	P. Sunwong, S. Boonsuya, S. Chaichuay, T. Chanwattana, Ch. Dhammatong, A. Kwankasem, C.P. Preecha, T. Pulampong, K. Sittisard, V. Sooksrimuang, S. Srichan, P. Sudmuang, N. Suradet, S. Tancharakorn SLRI, Nakhon Ratchasima, Thailand
	A new insertion device, Superconducting Multipole Wiggler (SMPW) with the peak field strength of 3.5 T, was installed in the storage ring of Siam Photon Source as a radiation source for a new hard X-ray beamline. Cool-down process, as well as magnet training, was performed with careful tuning of liquid helium filling procedure for efficient management of liquid helium supply. The filling procedure was also optimized for safe operation of the magnet. The SMPW commission-ing was successfully carried out with electron beam and the effect of SMPW on electron beam dynamics was observed. It can be minimized using quadrupole magnets and horizontal/vertical correctors.
	Poster TUPAB375 [1.160 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB375
About •	paper received ※ 18 May 2021 paper accepted ※ 02 June 2021 issue date ※ 31 August 2021
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TUPAB378	Superconducting Dipole Magnets for the SIS100 Synchrotron	2401
	F. Kaether, P. Aguar Bartolome, A. Bleile, G. Golluccio, J. Ketter, P. Kosek, F. Kurian, V. Marusov, J.P. Meier, S.S. Mohite, C. Roux, P.J. Spiller, K. Sugita, A. Szwangruber, P.B. Szwangruber, A. Warth, H.G. Weiss GSI, Darmstadt, Germany
	The Facility for Antiproton and Ion Research (FAIR) is currently under construction at GSI Darmstadt, Germany. For its main accelarator, the SIS100 synchrotron, 110 superconducting dipole magnets has been produced and extensively tested. The fast-ramped Nuclotron-type superferric dipoles were manufactured with high effort regarding a precise magnetic field which could be proven by magnetic field measurements with high accuracy. Stable operation conditions at 4.5 K were achieved including an excellent quench behaviour and precise geometrical and electrical properties. An overview on design, production, operation, tests and measurement results will be given.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB378
About •	paper received ※ 19 May 2021 paper accepted ※ 21 June 2021 issue date ※ 10 August 2021
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TUPAB379	Superconducting Magnets for Super-FRS: Production and Testing Status	2405
	H. Müller, A. Chiuchiolo, E.J. Cho, G. Golluccio, F. Greiner, P. Kosek, M. Michels, C. Roux, K. Sugita, V.V. Velonas, M. Winkler GSI, Darmstadt, Germany H. Allain, A. Madur CEA-IRFU, Gif-sur-Yvette, France A. Borceto, G. Drago, G. Valesi ASG, Genova, Italy M. Garcia Escudero, M. Lopez, J. Lucas Elytt Energy, Madrid, Spain G. Riddone, S. Russenschuck CERN, Geneva, Switzerland
	The Super FRS is a two-stage in flight separator to be built next to the site of GSI, Darmstadt, Germany as part of FAIR (Facility for Anti-proton and Ion Research). Its three branches allow to carry out a wide variety of experiments. Due to the large acceptance needed, the magnets of the Super-FRS require a large aperture and therefore only a superconducting solution is feasible. A superferric design was chosen in which the magnetic field is shaped by an iron yoke. For the dipole magnets only the superconducting coils are in a cryostat. These magnets are manufactured by Elytt Energy (Spain). The multiplets, assemblies of quadrupoles and higher order multipole magnets, are completely immersed in a liquid Helium bath. They are being built at ASG (Italy). The first of two first of series multiplets, a short assembly containing 2 magnets, was tested at a dedicated test facility at CERN (Switzerland). The 2nd FoS multiplet, containing 9 magnets, and the FoS dipole will be tested soon. Series production of the multiplets has started. In this paper we will present the status of production and testing of the different superconducting magnets for Super-FRS.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB379
About •	paper received ※ 19 May 2021 paper accepted ※ 31 August 2021 issue date ※ 16 August 2021
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TUPAB380	Testing of the First of Series Quadrupole Doublet Module for the SIS100 Synchrotron	2409
	P. Aguar Bartolome, M. Al Ghanem, M. Becker, A. Bleile, R. Bluemel, L.H.J. Bozyk, V.I. Datskov, W. Freisleben, A. Kario, P. Kowina, K.K. Kozlowski, F. Kurian, S. Lindner, J.P. Meier, T. Miertsch, S.S. Mohite, V.P. Plyusnin, I. Pongrac, C. Roux, C. Schroeder, P.J. Spiller, K. Sugita, A. Szwangruber, P.B. Szwangruber, F. Walter, H. Welker, St. Wilfert, T. Winkler, S. Zeller GSI, Darmstadt, Germany
	A new international facility for antiproton and ion research (FAIR) is currently under construction in Darmstadt, Germany. The high intensity primary beam required for different research experiments will be provided by the SIS100 heavy ion synchrotron. The synchrotron is composed of fast cycling superconducting magnets from which about 300 will be integrated in Quadrupole Doublet Modules (QDM). Each module consists of two units composed of a quadrupole and corrector magnets. The First of Series Quadrupole Doublet Module was delivered to the test facility at GSI in November 2019. The assembled doublet was subjected to a dedicated test program to verify the functionality of the module components at cryogenic temperature and operating conditions. The results obtained during the testing campaign will be presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB380
About •	paper received ※ 19 May 2021 paper accepted ※ 18 June 2021 issue date ※ 02 September 2021
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TUPAB381	Thermal Analysis of the RHIC Arc Dipole Magnet Cold Mass with the EIC Beam Screen	2413
	S.K. Nayak, M. Anerella, M. Blaskiewicz, J.M. Brennan, R.C. Gupta, M. Mapes, G.T. McIntyre, S. Peggs, R. Than, J.E. Tuozzolo, S. Verdú-Andrés, D. Weiss BNL, Upton, New York, USA
	Funding: Funding agency Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy. The EIC will make use of the existing RHIC storage rings with their superconducting (SC) magnet arcs. A stainless-steel beam screen with co-laminated copper and a thin amorphous carbon (aC) film on the inner surface will be installed in the beam pipe of the SC magnets. The copper will reduce the beam-induced resistive-wall (RW) heating from operation with the higher intensity EIC beams, that if not addressed would make the magnets quench. Limiting the RW heating is also important to achieve an adequately low vacuum level. The aC coating will reduce secondary electron yield which could also cause heating and limit intensity. Among all the RHIC SC magnets, the arc dipoles present the biggest challenge to the design and installation of beam screens. The arc dipoles, which make up for 78% (2.5 km) length of all SC magnets in RHIC, expect the largest RW heating due to their smallest aperture. These magnets are also the longest (9.45 m each), thus experiencing the largest temperature rise over their length, and have a large sagitta (48.5 mm) that increases the difficulty to install the beam screen in place. This paper presents a detailed thermal analysis of the magnet-screen system.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB381
About •	paper received ※ 19 May 2021 paper accepted ※ 20 July 2021 issue date ※ 23 August 2021
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TUPAB383	Magnetic Field Performance of the First Serial Quadrupole Units for the SIS100 Synchrotron of FAIR	2417
	V.V. Borisov, O. Golubitsky, H.G. Khodzhibagiyan, B.Yu. Kondratiev, M.M. Shandov JINR, Dubna, Moscow Region, Russia E.S. Fischer, M.A. Kashunin, S.A. Kostromin, I. Nikolaichuk, T. Parfylo, A.V. Shemchuk, D.A. Zolotykh JINR/VBLHEP, Dubna, Moscow region, Russia
	The FAIR project is a new international accelerator complex, currently under construction in Darmstadt, Germany. The heavy-ion synchrotron SIS100 is the main accelerator of the whole complex. It will provide high-intensity primary beams with a magnetic rigidity of 100 Tm and a maximum repetition rate up to 4 Hz. The series production and testing of superconducting quadrupole units began in 2020 at JINR, Dubna. The first batch of units was delivered to Germany in September 2020. Each unit is subjected to a comprehensive testing program both at ambient temperature and under cryogenic conditions. We present the performance characteristics of the first quadrupole units (consisting of a lattice quadrupole magnet and correcting magnet mechanically and hydraulically coupled to a quadrupole). The main attention is paid to the field quality of the series of 6 quadrupoles measured by the same probe.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB383
About •	paper received ※ 19 May 2021 paper accepted ※ 02 June 2021 issue date ※ 01 September 2021
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TUPAB386	Design Study of the Nb₃Sn Cos-Theta Dipole Model for FCC-hh	2421
	R.U. Valente La Sapienza University of Rome, Rome, Italy S. Burioli, P. Fabbricatore, S. Farinon, F. Levi, R. Musenich, A. Pampaloni INFN Genova, Genova, Italy E. De Matteis, M. Statera INFN/LASA, Segrate (MI), Italy F. Lackner, D. Tommasini CERN, Meyrin, Switzerland S. Mariotto, M. Prioli INFN-Milano, Milano, Italy M. Sorbi Universita’ degli Studi di Milano & INFN, Segrate, Italy
	In the context of the Future Circular Collider hadron-hadron (FCC-hh) R&D program, the Italian Institute of Nuclear Physics (INFN), in collaboration with CERN, is responsible for designing and constructing the Falcon Dipole (Future Accelerator post-LHC Costheta Optimized Nb₃Sn Dipole), which is an important step towards the construction of High Field Nb₃Sn magnets for a post LHC collider. The magnet is a short model with one aperture of 50 mm and the target bore field is 12 T (14 T ’ultimate’ field). The dipole is pre-loaded with the Bladder&Key technique to minimize the stress on the coils at room temperature, which are prone to degradation because of the Nb₃Sn cable strain-sensitivity. The electro-mechanical 2D design is focused on the performance, the field quality and the quench protection, with emphasis to the stresses on the the conductor. The Falcon Dipole has been modelled in a 3D FEM to determine the peak field distribution and the influence of the coil ends on the field quality.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB386
About •	paper received ※ 19 May 2021 paper accepted ※ 21 June 2021 issue date ※ 19 August 2021
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TUPAB387	Superconducting Solenoid Field Measurement and Optimization	2425
	S. Ma, A. Arnold, P. Murcek, A.A. Ryzhov, J. Schaber, J. Teichert, R. Xiang, P.Z. Zwartek HZDR, Dresden, Germany H.J. Qian DESY Zeuthen, Zeuthen, Germany
	The solenoid is a significant part of an electron injector to provide a proper focusing, and preserve the beam projected emittance. A superconducting solenoid is applied for the SRF photoinjector at HZDR. The solenoid itself can degrade electron beam quality due to magnetic field imperfections like multipole components. In order to determine the field aberrations in the solenoid, we measured the superconducting solenoid magnetic field in the cryomodule. A simple and effective method is used to analyze the multipole field components, which will be presented in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB387
About •	paper received ※ 19 May 2021 paper accepted ※ 02 June 2021 issue date ※ 20 August 2021
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WEPAB003	Overview of the Magnets Required for the Interaction Region of the Electron-Ion Collider (EIC)	2578
	H. Witte, K. Amm, M. Anerella, J. Avronsart, A. Ben Yahia, J.P. Cozzolino, R.C. Gupta, H.M. Hocker, P. Kovach, G.J. Mahler, A. Marone, R.B. Palmer, B. Parker, S.R. Plate, C.E. Runyan, J. Schmalzle BNL, Upton, New York, USA
	Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy. The planned electron-ion collider (EIC) at Brookhaven National Laboratory (BNL) is designed to deliver a peak luminosity of 1x10³⁴ cm^-2 s^-1. This paper presents an overview of the magnets required for the interaction region of the BNL EIC. To reduce risk and cost the IR is designed to employ conventional NbTi superconducting magnets. In the forward direction the magnets for the hadrons are required to pass a large neutron cone and particles with a transverse momentum of up to 1.3 GeV/c, which leads to large aperture requirements. In the rear direction the synchrotron radiation fan produced by the electron beam must not hit the magnet apertures, which determines their aperture. For the forward direction a mostly interleaved scheme is used for the optics, whereas for the rear side 2-in-1 magnets are employed. We present an overview of the EIC IR magnet design including the forward spectrometer magnet B0.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB003
About •	paper received ※ 18 May 2021 paper accepted ※ 01 July 2021 issue date ※ 29 August 2021
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WEPAB264	MOGA Optimization of Superconducting Longitudinal Gradient Bend Based on NbTi Wire	3257
	C. Chen, Z.H. Bai, G.Y. Feng, Z.L. Ren, Zh.X. Tang, L. Wang, H. Xu USTC/NSRL, Hefei, Anhui, People’s Republic of China
	Funding: Work supported by National Key Research and Development Program of China, (2016YFA0402001) Multi-bend achromat lattices with unit cells have been used in diffraction-limited storage ring designs. The longitudinal gradient bend can reduce the horizontal emittance below the theoretical minimum of a given magnet structure, and generally the horizontal emittance reduces with the peak field grows. Therefore superconducting longitudinal gradient bend (SLGB) can produce higher peak field value and quasi-hyperbolic field profile to minimize emittance at location of radiation and generate better hard X-rays. NbTi conductor, rather than Nb₃Sn conductor, is selected to keep the design and manufacture of SLGB magnet as simple as possible. In this paper, how the field profiles of race-track type coil and solenoid coil change with their geometric parameters is studied, and multi-objective genetic algorithm is used to optimize SLGB magnet structure considering Hefei Advanced Light Facility lattice design demand and NbTi critical current.
	Poster WEPAB264 [1.476 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB264
About •	paper received ※ 14 May 2021 paper accepted ※ 05 July 2021 issue date ※ 14 August 2021
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FRXB01	The Progress of the In-Vacuum Superconducting Undulator Prototype for SHINE Project
	Q.G. Zhou SSRF, Shanghai, People’s Republic of China
	The superconducting undulator can generate the highest peak field with the short period length and give the desirable K value, thus producing the high-intensity high-energy radiation photons. The Shanghai High Repetition rate XFEL and Extreme Light (SHINE) facility will use 40 superconducting undulators with 4m long for each to produce the vertically polarized photons with energy of 10keV-25keV. The period length of undulators is 16mm, the magnetic gap is 5mm and the peak field is 1.58T. Each undulator contains 504 vertical racetrace coils made of NbTi wires which are wound on 504 active poles. A 65K shielding is designed to reduce the thermal radiation from the vacuum chamber. The cooling of the magnet is forced by the liquid helium pipes which are installed in the middle of the magnet yoke surface and the sides of the gap in the direction of the electron beam. There is no beam vacuum chamber due to the small magnetic gap. A prototype of 4m long is being manufactured before the mass production and will be finished this year. The paper will describe the design parameters, the configuration of the prototype and the test plan of this year.
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Paper

Title

Page

TUXC01

Fabrication and Test Challenges of the SC Transport Solenoid for Mu2e Experiment

M.J. Lamm, G. Ambrosio, K.E. Badgley, J.S. Brandt, D.A. Evbota, A. Hocker, V. Lombardo, T.H. Nicol, P. Schlabach
Fermilab, Batavia, Illinois, USA

Funding: Supported in part by FRA under DOE Contract DE-AC02-07CH11359
A muon transport system (TS) is being built for the Fermilab Mu2e Experiment. The system consists of 52 superconducting solenoid magnets organized into two separately powered and cryostated elements TSu/TSd. Each cryostated element is further segmented into seven test units that form the TSu/TSd cold mass. The s-shaped geometry of the transport as well as its magnetic coupling to adjacent solenoid elements provides challenging requirements for the system design and fabrication. The acceptance campaign for the 14 test units is nearly completed and one of the two cold masses has been fully mechanically assembled. After presenting an overview of the Mu2e solenoid system, we report on the fabrication and test challenges and progress on the TS system including quench performance and coil alignment.

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TUXC05

Production and testing of NICA collider magnets

D. Nikiforov, H.G. Khodzhibagiyan, M.V. Petrov
JINR, Dubna, Moscow Region, Russia
Yu.G. Bespalov, S.A. Kostromin
JINR/VBLHEP, Dubna, Moscow region, Russia

The commissioning of the accelerating complex NICA (Nuclotron-based Ion Collider fAcility) will be carried out at the end of 2022. The NICA complex includes a heavy ion linear accelerator (HILAc) and three superconducting (SC) rings new Booster synchrotron (Booster), synchrotron - Nuclotron, and collider. Collider has a two-aperture structure and consists 327 SC magnets. The report presents the results of cryogenic tests of SC magnets on a cryogenic test bench, such as research quench histories of the SC coils, measurement static heat leak and dynamic heat releases, search cold leaks. More than 80% of the collider’s dipole magnets successfully passed cryogenic tests at the end of January 2021. The first successful cryogenic tests of quadrupole lenses with correcting SC magnets were carried out.
Grant LHEP 21-103-02

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TUPAB372

Status of the Quadrupole Doublet Module Series Manfacturing

2388

T. Winkler, A. Bleile, L.H.J. Bozyk, V.I. Datskov, J. Ketter, P. Kowina, J.P. Meier, N. Pyka, C. Roux, P.J. Spiller, K. Sugita, A. Waldt, St. Wilfert
GSI, Darmstadt, Germany

The 83 Quadrupole Doublet Modules (QDM) for the heavy-ion-synchrotron SIS100 of the FAIR project at GSI are highly integrated cryogenic modules containing multiple magnets. Each of eleven different QDM types consists of two units, where one unit consists of one quadrupole magnet as well as corrector magnets depending on the modules position in the accelerator Ion-Optical Lattice. Additionally, the QDMs contain cryogenic collimators, beam diagnostics, as well as cryogenic UHV beam pipes. The modules contain parts from multiple suppliers increasing the logistics behinds the QDMs design further. We present the process of the module integration, give details on the current integration status and present an outlook on the timeline for the QDM integration planning.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB372

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paper received ※ 18 May 2021 paper accepted ※ 02 June 2021 issue date ※ 21 August 2021

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TUPAB373

Design of a Delta-type Superconducting Undulator at the IHEP

2391

J.H. Wei
IHEP CSNS, Guangdong Province, People’s Republic of China
C.D. Deng
DNSC, Dongguan, People’s Republic of China
L. Gong, X.Y. Li, X.C. Yang
IHEP, Beijing, People’s Republic of China
Y. Li
DESY, Hamburg, Germany

Undulators play an important role in the 4th generation radiation light source. In order to satisfy different requirements of the experiments, various undulator structures have been proposed. The Delta-type undulator can provide circular polarized radiation. Conventional undulators are usually made of permanent magnets, but the application of the superconducting technology in the undulator is developing quickly. Compared to the permanent magnet undulators, superconducting undulators can provide higher photon flux with the same magnetic pole gap and period length, especially when the period length is longer than 20 mm. An R&D project is underway to produce a protype of a Delta-type superconducting undulator with 28 mm long period and 12 mm gap at the IHEP. The structure design and the simulation results of the magnetic field are presented in this paper.

Poster TUPAB373 [1.752 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB373

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paper received ※ 19 May 2021 paper accepted ※ 18 June 2021 issue date ※ 15 August 2021

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TUPAB374

Development of a Quench Detection System for the FAIR Superconducting Devices

2394

V. Raginel, M. Dziewiecki, W. Freisleben, P.B. Szwangruber, L. Theiner
GSI, Darmstadt, Germany

The Facility for Antiproton and Ion Research (FAIR), which is presently under construction in Darmstadt (Germany), will incorporate a large variety of superconducting devices like magnets, currents leads and bus bars. These components depend on an active protection in case of a transition from superconducting to the resistive state, so-called quench. In this framework, a FAIR Quench Detection System (F-QDS) is being developed based on analog and digital electronics and will be implemented in several machines of the FAIR complex. This paper describes the development of the F-QDS. An overview of the F-QDS electronics is given followed by a description of the system integration to the infrastructure of various machines. Initial test results of the F-QDS prototype system are presented and discussed.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB374

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paper received ※ 25 May 2021 paper accepted ※ 05 July 2021 issue date ※ 22 August 2021

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TUPAB375

Commissioning and Operation of Superconducting Multipole Wiggler at Siam Photon Source

2398

P. Sunwong, S. Boonsuya, S. Chaichuay, T. Chanwattana, Ch. Dhammatong, A. Kwankasem, C.P. Preecha, T. Pulampong, K. Sittisard, V. Sooksrimuang, S. Srichan, P. Sudmuang, N. Suradet, S. Tancharakorn
SLRI, Nakhon Ratchasima, Thailand

A new insertion device, Superconducting Multipole Wiggler (SMPW) with the peak field strength of 3.5 T, was installed in the storage ring of Siam Photon Source as a radiation source for a new hard X-ray beamline. Cool-down process, as well as magnet training, was performed with careful tuning of liquid helium filling procedure for efficient management of liquid helium supply. The filling procedure was also optimized for safe operation of the magnet. The SMPW commission-ing was successfully carried out with electron beam and the effect of SMPW on electron beam dynamics was observed. It can be minimized using quadrupole magnets and horizontal/vertical correctors.

Poster TUPAB375 [1.160 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB375

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paper received ※ 18 May 2021 paper accepted ※ 02 June 2021 issue date ※ 31 August 2021

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TUPAB378

Superconducting Dipole Magnets for the SIS100 Synchrotron

2401

F. Kaether, P. Aguar Bartolome, A. Bleile, G. Golluccio, J. Ketter, P. Kosek, F. Kurian, V. Marusov, J.P. Meier, S.S. Mohite, C. Roux, P.J. Spiller, K. Sugita, A. Szwangruber, P.B. Szwangruber, A. Warth, H.G. Weiss
GSI, Darmstadt, Germany

The Facility for Antiproton and Ion Research (FAIR) is currently under construction at GSI Darmstadt, Germany. For its main accelarator, the SIS100 synchrotron, 110 superconducting dipole magnets has been produced and extensively tested. The fast-ramped Nuclotron-type superferric dipoles were manufactured with high effort regarding a precise magnetic field which could be proven by magnetic field measurements with high accuracy. Stable operation conditions at 4.5 K were achieved including an excellent quench behaviour and precise geometrical and electrical properties. An overview on design, production, operation, tests and measurement results will be given.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB378

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paper received ※ 19 May 2021 paper accepted ※ 21 June 2021 issue date ※ 10 August 2021

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TUPAB379

Superconducting Magnets for Super-FRS: Production and Testing Status

2405

H. Müller, A. Chiuchiolo, E.J. Cho, G. Golluccio, F. Greiner, P. Kosek, M. Michels, C. Roux, K. Sugita, V.V. Velonas, M. Winkler
GSI, Darmstadt, Germany
H. Allain, A. Madur
CEA-IRFU, Gif-sur-Yvette, France
A. Borceto, G. Drago, G. Valesi
ASG, Genova, Italy
M. Garcia Escudero, M. Lopez, J. Lucas
Elytt Energy, Madrid, Spain
G. Riddone, S. Russenschuck
CERN, Geneva, Switzerland

The Super FRS is a two-stage in flight separator to be built next to the site of GSI, Darmstadt, Germany as part of FAIR (Facility for Anti-proton and Ion Research). Its three branches allow to carry out a wide variety of experiments. Due to the large acceptance needed, the magnets of the Super-FRS require a large aperture and therefore only a superconducting solution is feasible. A superferric design was chosen in which the magnetic field is shaped by an iron yoke. For the dipole magnets only the superconducting coils are in a cryostat. These magnets are manufactured by Elytt Energy (Spain). The multiplets, assemblies of quadrupoles and higher order multipole magnets, are completely immersed in a liquid Helium bath. They are being built at ASG (Italy). The first of two first of series multiplets, a short assembly containing 2 magnets, was tested at a dedicated test facility at CERN (Switzerland). The 2nd FoS multiplet, containing 9 magnets, and the FoS dipole will be tested soon. Series production of the multiplets has started. In this paper we will present the status of production and testing of the different superconducting magnets for Super-FRS.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB379

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paper received ※ 19 May 2021 paper accepted ※ 31 August 2021 issue date ※ 16 August 2021

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TUPAB380

Testing of the First of Series Quadrupole Doublet Module for the SIS100 Synchrotron

2409

P. Aguar Bartolome, M. Al Ghanem, M. Becker, A. Bleile, R. Bluemel, L.H.J. Bozyk, V.I. Datskov, W. Freisleben, A. Kario, P. Kowina, K.K. Kozlowski, F. Kurian, S. Lindner, J.P. Meier, T. Miertsch, S.S. Mohite, V.P. Plyusnin, I. Pongrac, C. Roux, C. Schroeder, P.J. Spiller, K. Sugita, A. Szwangruber, P.B. Szwangruber, F. Walter, H. Welker, St. Wilfert, T. Winkler, S. Zeller
GSI, Darmstadt, Germany

A new international facility for antiproton and ion research (FAIR) is currently under construction in Darmstadt, Germany. The high intensity primary beam required for different research experiments will be provided by the SIS100 heavy ion synchrotron. The synchrotron is composed of fast cycling superconducting magnets from which about 300 will be integrated in Quadrupole Doublet Modules (QDM). Each module consists of two units composed of a quadrupole and corrector magnets. The First of Series Quadrupole Doublet Module was delivered to the test facility at GSI in November 2019. The assembled doublet was subjected to a dedicated test program to verify the functionality of the module components at cryogenic temperature and operating conditions. The results obtained during the testing campaign will be presented.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB380

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paper received ※ 19 May 2021 paper accepted ※ 18 June 2021 issue date ※ 02 September 2021

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TUPAB381

Thermal Analysis of the RHIC Arc Dipole Magnet Cold Mass with the EIC Beam Screen

2413

S.K. Nayak, M. Anerella, M. Blaskiewicz, J.M. Brennan, R.C. Gupta, M. Mapes, G.T. McIntyre, S. Peggs, R. Than, J.E. Tuozzolo, S. Verdú-Andrés, D. Weiss
BNL, Upton, New York, USA

Funding: Funding agency Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy.
The EIC will make use of the existing RHIC storage rings with their superconducting (SC) magnet arcs. A stainless-steel beam screen with co-laminated copper and a thin amorphous carbon (aC) film on the inner surface will be installed in the beam pipe of the SC magnets. The copper will reduce the beam-induced resistive-wall (RW) heating from operation with the higher intensity EIC beams, that if not addressed would make the magnets quench. Limiting the RW heating is also important to achieve an adequately low vacuum level. The aC coating will reduce secondary electron yield which could also cause heating and limit intensity. Among all the RHIC SC magnets, the arc dipoles present the biggest challenge to the design and installation of beam screens. The arc dipoles, which make up for 78% (2.5 km) length of all SC magnets in RHIC, expect the largest RW heating due to their smallest aperture. These magnets are also the longest (9.45 m each), thus experiencing the largest temperature rise over their length, and have a large sagitta (48.5 mm) that increases the difficulty to install the beam screen in place. This paper presents a detailed thermal analysis of the magnet-screen system.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB381

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paper received ※ 19 May 2021 paper accepted ※ 20 July 2021 issue date ※ 23 August 2021

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TUPAB383

Magnetic Field Performance of the First Serial Quadrupole Units for the SIS100 Synchrotron of FAIR

2417

V.V. Borisov, O. Golubitsky, H.G. Khodzhibagiyan, B.Yu. Kondratiev, M.M. Shandov
JINR, Dubna, Moscow Region, Russia
E.S. Fischer, M.A. Kashunin, S.A. Kostromin, I. Nikolaichuk, T. Parfylo, A.V. Shemchuk, D.A. Zolotykh
JINR/VBLHEP, Dubna, Moscow region, Russia

The FAIR project is a new international accelerator complex, currently under construction in Darmstadt, Germany. The heavy-ion synchrotron SIS100 is the main accelerator of the whole complex. It will provide high-intensity primary beams with a magnetic rigidity of 100 Tm and a maximum repetition rate up to 4 Hz. The series production and testing of superconducting quadrupole units began in 2020 at JINR, Dubna. The first batch of units was delivered to Germany in September 2020. Each unit is subjected to a comprehensive testing program both at ambient temperature and under cryogenic conditions. We present the performance characteristics of the first quadrupole units (consisting of a lattice quadrupole magnet and correcting magnet mechanically and hydraulically coupled to a quadrupole). The main attention is paid to the field quality of the series of 6 quadrupoles measured by the same probe.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB383

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paper received ※ 19 May 2021 paper accepted ※ 02 June 2021 issue date ※ 01 September 2021

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TUPAB386

Design Study of the Nb₃Sn Cos-Theta Dipole Model for FCC-hh

2421

R.U. Valente
La Sapienza University of Rome, Rome, Italy
S. Burioli, P. Fabbricatore, S. Farinon, F. Levi, R. Musenich, A. Pampaloni
INFN Genova, Genova, Italy
E. De Matteis, M. Statera
INFN/LASA, Segrate (MI), Italy
F. Lackner, D. Tommasini
CERN, Meyrin, Switzerland
S. Mariotto, M. Prioli
INFN-Milano, Milano, Italy
M. Sorbi
Universita’ degli Studi di Milano & INFN, Segrate, Italy

In the context of the Future Circular Collider hadron-hadron (FCC-hh) R&D program, the Italian Institute of Nuclear Physics (INFN), in collaboration with CERN, is responsible for designing and constructing the Falcon Dipole (Future Accelerator post-LHC Costheta Optimized Nb₃Sn Dipole), which is an important step towards the construction of High Field Nb₃Sn magnets for a post LHC collider. The magnet is a short model with one aperture of 50 mm and the target bore field is 12 T (14 T ’ultimate’ field). The dipole is pre-loaded with the Bladder&Key technique to minimize the stress on the coils at room temperature, which are prone to degradation because of the Nb₃Sn cable strain-sensitivity. The electro-mechanical 2D design is focused on the performance, the field quality and the quench protection, with emphasis to the stresses on the the conductor. The Falcon Dipole has been modelled in a 3D FEM to determine the peak field distribution and the influence of the coil ends on the field quality.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB386

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paper received ※ 19 May 2021 paper accepted ※ 21 June 2021 issue date ※ 19 August 2021

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TUPAB387

Superconducting Solenoid Field Measurement and Optimization

2425

S. Ma, A. Arnold, P. Murcek, A.A. Ryzhov, J. Schaber, J. Teichert, R. Xiang, P.Z. Zwartek
HZDR, Dresden, Germany
H.J. Qian
DESY Zeuthen, Zeuthen, Germany

The solenoid is a significant part of an electron injector to provide a proper focusing, and preserve the beam projected emittance. A superconducting solenoid is applied for the SRF photoinjector at HZDR. The solenoid itself can degrade electron beam quality due to magnetic field imperfections like multipole components. In order to determine the field aberrations in the solenoid, we measured the superconducting solenoid magnetic field in the cryomodule. A simple and effective method is used to analyze the multipole field components, which will be presented in this paper.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB387

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paper received ※ 19 May 2021 paper accepted ※ 02 June 2021 issue date ※ 20 August 2021

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WEPAB003

Overview of the Magnets Required for the Interaction Region of the Electron-Ion Collider (EIC)

2578

H. Witte, K. Amm, M. Anerella, J. Avronsart, A. Ben Yahia, J.P. Cozzolino, R.C. Gupta, H.M. Hocker, P. Kovach, G.J. Mahler, A. Marone, R.B. Palmer, B. Parker, S.R. Plate, C.E. Runyan, J. Schmalzle
BNL, Upton, New York, USA

Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy.
The planned electron-ion collider (EIC) at Brookhaven National Laboratory (BNL) is designed to deliver a peak luminosity of 1x10³⁴ cm^-2 s^-1. This paper presents an overview of the magnets required for the interaction region of the BNL EIC. To reduce risk and cost the IR is designed to employ conventional NbTi superconducting magnets. In the forward direction the magnets for the hadrons are required to pass a large neutron cone and particles with a transverse momentum of up to 1.3 GeV/c, which leads to large aperture requirements. In the rear direction the synchrotron radiation fan produced by the electron beam must not hit the magnet apertures, which determines their aperture. For the forward direction a mostly interleaved scheme is used for the optics, whereas for the rear side 2-in-1 magnets are employed. We present an overview of the EIC IR magnet design including the forward spectrometer magnet B0.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB003

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paper received ※ 18 May 2021 paper accepted ※ 01 July 2021 issue date ※ 29 August 2021

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WEPAB264

MOGA Optimization of Superconducting Longitudinal Gradient Bend Based on NbTi Wire

3257

C. Chen, Z.H. Bai, G.Y. Feng, Z.L. Ren, Zh.X. Tang, L. Wang, H. Xu
USTC/NSRL, Hefei, Anhui, People’s Republic of China

Funding: Work supported by National Key Research and Development Program of China, (2016YFA0402001)
Multi-bend achromat lattices with unit cells have been used in diffraction-limited storage ring designs. The longitudinal gradient bend can reduce the horizontal emittance below the theoretical minimum of a given magnet structure, and generally the horizontal emittance reduces with the peak field grows. Therefore superconducting longitudinal gradient bend (SLGB) can produce higher peak field value and quasi-hyperbolic field profile to minimize emittance at location of radiation and generate better hard X-rays. NbTi conductor, rather than Nb₃Sn conductor, is selected to keep the design and manufacture of SLGB magnet as simple as possible. In this paper, how the field profiles of race-track type coil and solenoid coil change with their geometric parameters is studied, and multi-objective genetic algorithm is used to optimize SLGB magnet structure considering Hefei Advanced Light Facility lattice design demand and NbTi critical current.

Poster WEPAB264 [1.476 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB264

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paper received ※ 14 May 2021 paper accepted ※ 05 July 2021 issue date ※ 14 August 2021

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FRXB01

The Progress of the In-Vacuum Superconducting Undulator Prototype for SHINE Project

Q.G. Zhou
SSRF, Shanghai, People’s Republic of China

The superconducting undulator can generate the highest peak field with the short period length and give the desirable K value, thus producing the high-intensity high-energy radiation photons. The Shanghai High Repetition rate XFEL and Extreme Light (SHINE) facility will use 40 superconducting undulators with 4m long for each to produce the vertically polarized photons with energy of 10keV-25keV. The period length of undulators is 16mm, the magnetic gap is 5mm and the peak field is 1.58T. Each undulator contains 504 vertical racetrace coils made of NbTi wires which are wound on 504 active poles. A 65K shielding is designed to reduce the thermal radiation from the vacuum chamber. The cooling of the magnet is forced by the liquid helium pipes which are installed in the middle of the magnet yoke surface and the sides of the gap in the direction of the electron beam. There is no beam vacuum chamber due to the small magnetic gap. A prototype of 4m long is being manufactured before the mass production and will be finished this year. The paper will describe the design parameters, the configuration of the prototype and the test plan of this year.

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