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Linear switched-flux machines are a kind of permanent magnet machine with a passive ferromagnetic secondary. Therefore, they can achieve both a good performance and a low cost in long stroke applications. However, due to the end effect, these machines generate high detent force and on load thrust force ripples. There are several solutions in the literature that aim to minimise the thrust ripple. One of those solutions is the placement of additional poles in the ends of the machine. These can be passive, i. e. simple ferromagnetic teeth, or active, with additional magnets. The former is the most common solution in the literature. In this article, the optimal configuration of the additional poles is discussed via 4 additional pole sizing strategies, and the influence of the design variables and optimisation objectives is analysed. Then, a generic additional pole configuration is proposed, which combines a high effectiveness and a simple design. Finally, an experimental validation is carried out, and the measurements confirm the results from the optimisation. [ABSTRACT FROM AUTHOR]

In this article, a magnet temperature estimation method applicable to an interior permanent magnet synchronous machine (IPMSM) at a standstill has been newly devised. First, it is analyzed that an inductance of IPMSM varies according to not only a magnet temperature but also a rotor angle, which is spatial harmonics. The analysis is verified in a small-scaled motor-generation set (MG-set), where magnet temperatures can be directly measured. Based on the analysis and experimental results, it is demonstrated that spatial harmonics can make no negligible error in the magnet temperature estimation. Therefore, the estimation method has been newly devised in this article, considering spatial harmonics. As a result, the devised method can reduce the maximum estimation error from 25.3 to 6 °C based on experimental results in the small-scaled MG-set. Additionally, the devised method has been verified as feasible for use in the small-scaled motor and the traction motor of a mass-produced electric vehicle. As a result, the proposed method can estimate the magnet temperature accurately at every rotor position of both motors. Through this online estimation, the maximum estimation error is less than 5 °C even when the stator winding temperature is varying in both a small-scaled motor and the traction motor. [ABSTRACT FROM AUTHOR]

In this article, electromagnet layouts are presented, which generate a magnetic field with a magnitude gradient that does not vary significantly in a horizontal plane but decreases monotonically with the vertical height above the magnet. Such a one-direction magnetic field gradient is a specific requirement for magnetic density separation (MDS), a novel recycling technology that combines a vertical magnetic field gradient with a ferrofluid to separate a mixture of non-magnetic materials based on their mass density. We are assembling the first superconducting magnet to be used for this application. In contrast to other separation technologies that use ferrofluid, multiple products can be separated in a single process step. First, the idealized current distribution is introduced that produces such a magnetic field with a magnitude that decays only in one direction. This ideal field can be approximated with practical coil configurations, which are evaluated with a Fourier analysis to derive an optimal cross-sectional layout based on flat racetrack coils. The analysis concludes with a discussion of the effect of winding pack thickness on the value of the magnetic field above the magnet system and the peak field inside the winding pack. The conclusions of this study are applicable not just for MDS but for any application that requires a magnetic field gradient that changes only in one direction. [ABSTRACT FROM AUTHOR]

This article discusses the optimum layout of coils of a superconducting magnet system for magnetic density separation (MDS). MDS is a novel separation technology that combines a vertical magnetic field gradient with a ferrofluid to separate mixtures of non-magnetic particles based on their mass density. The MDS process can separate more than two types of particles in a single process step, thereby distinguishing it from other separation techniques using a ferrofluid. The authors are currently constructing a superconducting MDS demonstrator. Ideally, the gradient of the magnetic field magnitude should change only with the distance above the magnet but remain constant in a horizontal plane. In principle, such an ideal field profile can be generated with an infinite harmonic sheet current. In practice, edge effects appear due to the necessity of using a finite number of coils. These cause a horizontal component in the field gradient and also change the vertical component. We compare the vertical magnetic field gradient of various coil layouts to see which configuration performs best. To facilitate ease of production, the analysis is restricted to flat racetrack coils. The main result is that the specific shape of a racetrack coil has a larger influence on the vertical gradient than the number of coils. The feed particles need to be pushed through the separation chamber from the insertion to the collection point. One option to realize this is to use an MDS setup in which the magnet is inclined with respect to the horizontal plane. This tilting results in a horizontal magnetic force component, which drives feed particles through the fluid bed. We show that a three-coil layout provides the largest usable fluid bed depth for a wide range of tilt angles. [ABSTRACT FROM AUTHOR]

A vibrating magnet antenna shows promise as an efficient, compact source for ultralow frequency (ULF) electromagnetic waves. ULF signals are able to penetrate through earthen materials, making this regime desirable for subterranean communication and detection of subterranean features. Oscillating a permanent magnet back and forth across a novel soft-magnet Y-stator projects a switching magnetic field capable of kilohertz frequencies. Arrays with multiple oscillators are favored due to energy scaling and parasitic losses. The permeability of magnetic circuits can be adjusted to change the potential energy of the magneto-mechanical oscillator, altering the natural frequency of vibration for frequency modulation. This article presents a theoretical justification of the Y-stator design, a simulation study performed using COMSOL Multiphysics Modeling Software, and preliminary laboratory results. [ABSTRACT FROM AUTHOR]

The ITER Central Solenoid (CS) modules are under fabrication by the US ITER organization and its subcontractors. US ITER will supply seven modules to the ITER Organization (IO), six of which will be assembled in a stack that forms the ITER Central Solenoid, the last one being spare. The first module, namely CSM 1 was manufactured by General Atomics (GA) and went through Factory Acceptance Tests (FAT) including high voltage testing, Paschen testing and then cold test at 4.5 K and up to 40.0 kA in order to demonstrate compliance with coil performance requirements. The paper focuses on the results of the first CS Module thermal hydraulic characterization without current (and field). Pressure drops, transit time, and thermal coupling between pancakes are presented. Analysis results and tests are also compared. [ABSTRACT FROM AUTHOR]

Permanent magnet localization (PML) is designed for applications requiring non-line-of-sight motion tracking with millimetric accuracy. Current PML-based tongue tracking is not only impractical for daily use due to many sensors being placed around the mouth, but also requires a large training set of tracer motion. Our method was designed to overcome these shortcomings by generating a local magnetic field and removing the need for the localization to be trained with tracer rotations. An inertial measurement unit (IMU) is used as a tracer that moves in a local magnetic field generated by a magnet strip. The magnetic strength can be optimized to enable the strip to be placed further away from the tracer, thus hidden from view. The tracer is small ($6\times 6\times 0.8$ mm 3) to reduce hindrance to natural tongue movements, and the strip is designed to be worn as a neckband. The IMU’s magnetometer measures the local magnetic field which is compensated for the tracer’s orientation by using the IMU’s accelerometer and gyroscope. The orientation-compensated magnetic measurements are then fed into a localization algorithm that estimates the tracer’s 3D position. The objective of this study is to evaluate the tracking accuracy of our method. In a $8\times 8\times 5$ cm 3 volume, positional errors of 1.6 mm (median) and 2.4 mm (third quartile, Q3) were achieved on a tracer being rotated ±50° along both pitch and roll. These results indicate this technology is promising for tongue tracking applications. [ABSTRACT FROM AUTHOR]

In this work, an experiment was carried out to investigate the preparation condition of anisotropic Fe-deficient M-type Ca–Sr–La system ferrite with optimum magnetic and physical properties using the raw material Fe2O3 from steel industrial iron oxide waste. The compositions of the calcined ferrites were chosen according to the stoichiometry ${\mathrm {Ca}}_{1-x-y}$ LaxSryFe10.9CozO19, where M-type single-phase calcined powder was synthesized with a composition of $x = 0.45$ , $y = 0.18$ , and $z= 0$. The effect of CaO, SiO2, and Co3O4 inter-additives on the Ca–Sr–La system ferrite was also discussed in order to obtain low-temperature sintered magnets. The magnetic properties of $B_{r} = 4570$ Gauss, $_{b}H_{c} = 4320$ Oe, $_{i}H_{c} = 5260$ Oe, and ($BH$) $_{\mathrm {max}}= 5.16$ MGOe were obtained for Ca–Sr–La system hard magnets with low cobalt content at 1.85 wt%. The magnetic properties of the prepared magnets really good compared to that of the traditional Sr–La–cobalt (Co) M-type ferrite, which has been the highest grade M-type hard ferrite. The remarkable steel industrial iron oxide waste Fe2O3 is recycled to produce high-end permanent magnets under an output power of < 1 kW, which will eventually be used in high-efficiency motors. [ABSTRACT FROM AUTHOR]

This article outlines an algorithm which analytically calculates the magnetic field produced by a general polyhedral permanent magnet with any number of faces and arbitrary face orientations, then uses the algorithm to semi-analytically calculate the force and torque on a second general polyhedral magnet. The algorithm is validated against both the literature and finite element simulations using cuboids and dodecahedra. It is then used to model a basic two-magnet repulsive system, where it is shown that frustum magnets can produce a larger force per unit volume than cuboidal magnets. The shape of the frustums is optimized to maximize the force between them at a given separation distance, showing a considerable increase in force when compared with cuboidal magnets with the same volume. This article shows that there is scope to improve the performance of magnetic systems by using novel magnet shapes and presents an algorithm which can be used for this optimization process. [ABSTRACT FROM AUTHOR]

The cooling performance of vegetable oil seeded with ferromagnetic nanoparticles is tested on a prototype electric transformer coil. The system is investigated both experimentally and numerically. The numerical simulations are done with finite elements assuming axisymmetry. The experimental and numerical results match very well with each other. The numerical tool is also used to investigate the impact of an annular magnet enclosing the setup. The orientation of the remanent magnetic induction of the magnet is observed to play a significant role in determining the cooling efficiency. [ABSTRACT FROM AUTHOR]

The alignment dependence and angular dependence of coercivity (ALDC and ANDC, respectively) of aligned and isotropically aligned Ga-doped Nd14.79Ga0.57B5,24Co1.11Febal sintered magnets were analyzed, and the results were compared with those of ferrite magnets, which were reported in our previous paper. The coercivity of Ga-doped Nd-Fe-B magnets decreases as alignment improves. The ALDC of this magnet is similar to that of ferrite magnets. The angle of the magnetization-reversal area (AMRA) of the aligned Ga-doped magnets has at coercivity an angular tilt of 41.4°, which is wider than that of the ferrite magnets. The ANDC of Ga-doped Nd-Fe-B sintered magnets displays similar behavior with that of ferrite magnets but is slightly lower than that of ferrite magnets, which is expected from AMRA of Ga-doped Nd-Fe-B sintered magnets. These results support our proposed coercivity mechanism; specifically, the magnetic domain walls are pinned at grains with tilted easy magnetization directions or $c$ -axis tilted from the easy magnetization of the magnet. When the magnetic domain walls are de-pinned from the pinning sites, they jump through several grains, thereby determining the coercivity. [ABSTRACT FROM AUTHOR]

Animals can incorporate large numbers of actuators because of the characteristics of muscles; whereas, robots cannot, as typical motors tend to be large, heavy, and inefficient. However, shape-memory alloys (SMA), materials that contract during heating because of change in their crystal structure, provide another option. SMA, though, is unidirectional and therefore requires an additional force to reset (extend) the actuator, which is typically provided by springs or antagonistic actuation. These strategies, however, tend to limit the actuator's work output and functionality as their force–displacement relationships typically produce increasing resistive force with limited variability. In contrast, magnetic springs—composed of permanent magnets, where the interaction force between magnets mimics a spring force—have much more variable force–displacement relationships and scale well with SMA. However, as of yet, no method for designing magnetic springs for SMA-actuators has been demonstrated. Therefore, in this paper, we present a new methodology to tailor magnetic springs to the characteristics of these actuators, with experimental results both for the device and robot-integrated SMA-actuators. We found magnetic building blocks, based on sets of permanent magnets, which are well-suited to SMAs and have the potential to incorporate features such as holding force, state transitioning, friction minimization, auto-alignment, and self-mounting. We show magnetic springs that vary by more than 3 N in 750  $\mu$ m and two SMA-actuated devices that allow the MultiMo-Bat to reach heights of up to 4.5 m without, and 3.6 m with, integrated gliding airfoils. Our results demonstrate the potential of this methodology to add previously impossible functionality to smart material actuators. We anticipate this methodology will inspire broader consideration of the use of magnetic springs in miniature robots and further study of the potential of tailored magnetic springs throughout mechanical systems. [ABSTRACT FROM AUTHOR]

This paper provides an overview of the magnetic field measurement and subsequent electromagnetic re-modeling of the CLAS12 torus during the commissioning of the magnet in the fall of 2016. The CLAS12 detector in Hall B is part of the 12 GeV Accelerator Upgrade project at Jefferson Lab. The torus magnet allows precise determination of particle momenta within a cone ∼ (5°–40°) in the forward direction. The ability to do this requires that we know the ∫B⋅dl of the torus to within an accuracy of 0.5% or better. To achieve this, an accurate model of the field along the particle path is required. The TOSCA code is used to generate a full three-dimensional (3-D) simulation of the magnetic envelope of the magnet as designed. Experimentally, the actual magnetic field within the magnet was surveyed to confirm the model design and to measure the deviation from the ideal case. The magnetic field deviations are attributed to manufacturing variability and assembly tolerances. A final model was created with allowances for these deviations guided by the survey data to create a more precise field integral model, which greatly improves the momentum resolution capability, allowing it to deliver the required specifications. [ABSTRACT FROM AUTHOR]

In this paper, the effects of using laminated steel and solid steel for the magnetizing fixture components on the magnetization energy needed for saturation, magnetization profile, and motor performance are presented. Three combinations of fixture core and back iron materials have been analyzed using 2-D finite element analysis as well as experiments. The potential issues with the use of solid steel as fixture components have been explained. The results indicate that the magnetization fixtures made with solid steel components require higher energy to generate the magnetization field needed for magnet saturation and in most practical cases lead to partially magnetized magnet and poor motor performance. The use of laminated steel for all soft magnetic components in the magnetization fixture is highly recommended. [ABSTRACT FROM AUTHOR]

The relation between the alignment dependence of the coercivity (ALDC) and the angular dependence of the coercivity (ANDC) for SrO $\cdot 6$ Fe2O3 magnets with various alignments is investigated. The coercivity of the SrO $\cdot 6$ Fe2O3 magnet is found to decrease as the alignment improves, which is similar to the behavior of Nd–Fe–B sintered magnets. It is expected that the crust of the grains simultaneously reverses via a magnetic domain wall that jumps through a number of grains. The ANDC of SrO $\cdot 6$ Fe2O3 decreases with increasing magnetic field angle until 40°, after which the coercivity gradually increases until 70°. The angle of the magnetization reversal area ($\theta _{1}$) of the SrO $\cdot 6$ Fe2O3 magnets, obtained from the ALDC, is 41° which is larger than that of Nd–Fe–B or Nd–Dy–Fe–B sintered magnets. The calculated ANDC using $\theta _{1} = 41^{\circ }$ and a Gaussian distribution of $\sigma = 70$ for the alignment distribution function shows that the ANDC decreases from $\phi = 0^{\circ }$ and agrees well with the experimental results until $\phi = 40^{\circ }$ , where $\phi $ is the angle between the magnetization direction of the magnet and the magnetic field. These results strongly support the coercivity mechanism obtained from Nd–Fe–B sintered magnets whereby, in the SrO $\cdot 6$ Fe2O3 magnets, the magnetic domain wall is pinned at the tilted grains and when the magnetic domain wall becomes de-pinned, the magnetic domain wall jumps through a number of grains. [ABSTRACT FROM AUTHOR]

This paper provides an overview of a test to confirm how the electromagnetic loss and energy balance in the CLAS12 Torus magnet system affect the cryogenics system in the event of a fast dump or quench. The test was a part of the commissioning activities within Hall B for the 12 GeV Accelerator Upgrade project at Jefferson Laboratory in November 2016. The test, as carried out, validated the design of the torus magnet protection and cryogenic safety systems. This magnet is unique in that it comprises six superconducting coils that are individually conduction-cooled by helium, thereby providing an element of thermal and mechanical decoupling between the coils. As such, its behavior under a fast dump condition (and even a quench) is markedly different from that of more conventional bath-cooled superconducting magnets. [ABSTRACT FROM AUTHOR]

Iron-free CANTED-cosine-theta magnet design offers many advantages, one being the excellent field quality and the absence of multipole components. However, edge effects are present, although they tend to integrate out over the length of the magnet. Many modern accelerator applications, however, require that these magnets are placed in an area of rapidly varying optics parameters, so magnets with greatly reduced edge effects have an advantage. We have designed such a magnet (a quadrupole) by adding multipole components of the opposite sign to the edge distortions of the magnet. A possible application could be the final focusmagnets of the FCC-ee, where beam size at the entry and exit point of the magnets varies by large factors. We have then used this technique to eliminate cross talk between adjacent final focus quadrupoles for the incoming and outgoing beams. [ABSTRACT FROM AUTHOR]

The concept design of the China Fusion Engineering Test Reactor (CFETR) was started in 2012 in two stages. For CFETR-Phase I, the major radius is 5.7 m, the minor radius is 1.6 m, and the magnetic field at the plasma region, BT, is 4-5 T. There were 16 toroidal field coils and six central solenoid coils designed by a Nb3 Sn cable-in-conduit conductor (CICC) with the maximum operation current of 64 and 50 kA, respectively. Three types of plasma equilibrium configuration (ITER-like single null, super-X, and snowflake) were designed. The maximum flux provided by the central solenoid is set at 180 V s. However, to get much higher operation parameters such as steady-state operation, particle and heat exhaust, disruption mitigation and avoidance, ELM control, and material damage by high heat flux and neutron, the superconducting magnet system of CFETR-phase II has been updated based on the larger machine with R = 6.7 m-7.0 m, a = 2.0 m, and BT = 6.5-7 T. Such a new design makes over 1-GW fusion power and better plasma performance possible. Hybrid TF coils are designed by a high-performance Nb3Sn conductor, since the maximum magnetic field can reach to 14-15 T. Besides, in order to save the space for the blanket system and get higher flux, a high-temperature superconducting Bi-2212 magnet with better current-carrying performance under high field is supposed to be employed for the CS coils of CFETR-phase II. The Bi-2212 CICC sample has been tested at 4.2 K with a critical current of 26.6 kA under its self-field. [ABSTRACT FROM AUTHOR]

In the framework of the EUROfusion DEMO project, design studies for the tokamak magnet systems are conducted across several European institutions. Superconducting magnets are required to generate the high magnetic fields needed for the plasma confinement and control. The reference conductor design is based on Cable-In-Conduit Conductors (CICC) cooled at cryogenic temperatures by forced circulation of supercritical helium. The proposed Toroidal Field (TF) coils Winding Pack (WP) design should satisfy the design/safety criteria during operation (e.g., minimal temperature margin) and in off-normal conditions (e.g., hotspot temperature). Quenches are studied to ensure that the proposed conductor design and associated quench protection system guarantee the integrity of the magnet; such events are a safety and investment protection issue, and as such deserve high levels of scrutiny. Quench propagation in a coil is a 3-dimensional (3D) problem. For this reason, a transient pseudo-3D modeling tool was developed for coupled thermal and thermo-hydraulic calculation in a tokamak superconducting coil. The coupling tool is based on a 1D model of the cable using the THEA code, considering current distribution, helium flow, thermal conduction in the strands and propagation of the quench along the conductor; the 2D transverse thermal diffusion across turns is modeled using the Cast3M code, considering the conductor jacket and insulation, on a selected set of cross-sections along the coil. The aim of the analysis is to assess the quench behavior of the CEA proposal for DEMO TF coil. The hotspot temperatures as well as the propagation of the normal zone along the conductor length are evaluated in a realistic quench scenario, taking into account the impact of transverse heat diffusion. [ABSTRACT FROM AUTHOR]

A superconducting magnet able to provide the required field of 4 T has been developed for a compact cyclotron to produce radioisotopes for medical imaging, in the framework of the AMIT project. It consists of two coils in Helmholtz configuration, embedded in a stainless steel casing to hold the Lorentz forces. The cooling scheme is based on a low pressure forced internal flow of two-phase liquid-vapour helium through a narrow channel machined in that casing. This paper reports on the cooling tests and the preliminary magnetic measurements of the magnet. Regarding cooling tests, liquidHelium froma Dewar has been used first to train the magnet and to estimate the thermal losses. Later, refrigeration will be accomplished from a stand-alone cryogenic supply system that would allow a user-friendly operation of the cyclotron, without external supply of cryogens. Regarding magnetic measurements, a custom magnetic measurement bench developed in collaboration with ALBA/CELLS, has been used to map the magnetic field and first results are presented and discussed in this paper. [ABSTRACT FROM AUTHOR]

The JT-60SA experimental device will be the world's largest superconducting tokamak when it is assembled in 2019 in Naka, Japan (R = 3 m, a = 1.2 m). It is being constructed jointly by institutions in the EU and Japan under the Broader Approach agreement. Manufacturing of the six NbTi equilibrium field (EF) coils, which have a diameter of up to 12 m, has been completed. So far, 13 of the 18 NbTi toroidal field (TF) coils, each 7-m high and 4.5-m wide, have also been manufactured and tested at 4 K in a dedicated test facility in France. The first three of four Nb3 Sn central solenoid (CS) modules have been completed, as have all of the copper in-vessel error field correction coils. Installation of the TF magnet, around the previously welded 340° tokamak vacuum vessel and its thermal shield, started at the end of 2016 and is currently underway. The TF magnet will in turn support the EF and CS coils. [ABSTRACT FROM AUTHOR]

An investigation of induced eddy current effects on the field homogeneity in fast ramped bending magnets was presented in this paper. The transverse field homogeneity and integral field homogeneity were calculated based on two-dimensional/three-dimensional finite-element analysis. The results showed that the transverse field homogeneity and integral field homogeneity were less than 0.05% after the field optimization with static analysis. The fast ramped bending magnet is used to deliver a proton beam for a superconducting proton therapy facility. The energy of the proton beam is adjusted by a fast degrader device and it will require all the magnets in the beam line to follow the energy changes of the degrader as fast as possible. During the energy change stage, induced eddy currents will appear in the beam tube. Then, the transient finite-element analysis is presented at different current ramp rates k and beam tube thicknesses b. The induced eddy currents in the beam tube were analyzed to research the eddy current effects on field quality. It shows that the field quality will be influenced more obviously with increased current ramp rate or beam tube thickness. The maximal field decrease in the midplane caused by eddy currents in the beam tube is the main reason for field quality disturbance. The relationship between the field decrease and current ramp rate k can be expressed simply with a mathematical formula. For different situations, the effects caused by eddy currents on field quality may be different. But the maximal field decrease in the center of the magnet is the same. [ABSTRACT FROM AUTHOR]

This paper reports on a low-frequency vibrational piezoelectric energy harvester that scavenges energy from a wire carrying an ac current. The harvester is described, fabricated, and characterized. The device consists of a silicon cantilever with an integrated piezoelectric capacitor and a proof-mass that incorporates a permanent magnet. When brought close to an ac current carrying wire, the magnet couples to the ac magnetic field from a wire, causing the cantilever to vibrate and generate power. The device was fabricated from a silicon-on-insulator substrate using microelectromechanical systems (MEMS) technology. The charge generating capacitor uses a CMOS compatible aluminum nitride piezoelectric material and fabrication process. The device uses a commercial neodymium iron boron permanent magnet that is post-fabrication assembled with the device. The measured average power dissipated across an optimal load of 2 \textM\Omega was 1.5~\mu \textW . This was obtained by exciting the device into mechanical resonance with a peak displacement of 3 mm using the electro-magnetic field from a 2-A source current. The measurements also reveal that the device’s electrical response is nonlinear due to mechanical nonlinearity of the device. In addition, bandwidth broadening by 250% is demonstrated by means of vibro-impact approach. [2016-0263] [ABSTRACT FROM PUBLISHER]

The superconducting magnet system in Hall B being designed and built as part of the Jefferson Lab 12 GeV upgrade requires powering two conduction cooled superconducting magnets-a torus and a solenoid. The torus magnet is designed to operate at 3770 A and the solenoid at 2416 A. Failure modes and effects analysis determined that voltage level thresholds and dump switch operation for magnet protection should be tested and analyzed before incorporating into the system. The designs of the quench protection and voltage tap subsystems were driven by the requirement to use a primary hard-wired quench detection subsystem together with a secondary programmable logic controller (PLC)-based protection. Parallel path voltage taps feed both the primary and the secondary quench protection subsystems. The PLC-based secondary protection is deployed as a backup for the hard-wired quench detection subsystem and also acts directly on the dump switch. We describe a series of tests and modifications carried out on the magnet power supply and the quench protection system to ensure that the superconducting magnet is protected against all fault scenarios. [ABSTRACT FROM AUTHOR]

The new LCLS-II Linear Superconducting Accelerator at SLAC needs superconducting magnet packages installed inside SCRF (superconducting radio frequency technology) cryomodules to focus and steer an electron beam. Two magnet prototypes were built and successfully tested at Fermilab. Magnets have an iron-dominated configuration, quadrupole and dipole NbTi superconducting coils, and splittable in the vertical plane configuration. Magnets inside the cryomodule are conductively cooled through pure Al heat sinks. Both magnets’ performance was verified by magnetic measurements at room temperature, and during cold tests in liquid helium. Test results including magnetic measurements are discussed. Special attention was given to the magnet performance at low currents where the iron yoke and the superconductor hysteresis effects have large influence. Both magnet prototypes were accepted for the installation in FNAL and JLAB prototype cryomodules [ABSTRACT FROM PUBLISHER]