Dipole electromagnets have two poles, north poles and south poles, and the magnetic field lines of a dipole electromagnet are similar to those of a bar magnet, with the field lines emerging from the north pole and entering the south pole. Dipole electromagnet is constructed of a coil of copper wire, strip or hollow conductor, wound into a specific shape like circular or rectangular, and the coil is designed to encircle a ferromagnetic core. A magnetic field is generated when an electric current passes through the coil, and the magnetic field is proportional to the number of turns of the wire in the coil and current intensity.
Application
Dipole electromagnets are designed to steer electron beams round the bends of a synchrotron, and its key function is to keep the electrons travelling in the middle of the exit tube. In particle accelerators, the charged particle beam is bent via the cross product of the particle's velocity and the magnetic field vector, with direction also being dependent on the charge of the particle. dipole electromagnets are used to create a homogeneous magnetic field over a distance. Particle motion in the field will be circular in a plane that is perpendicular to the field and collinear to the direction of particle motion meanwhile, the injected particle will travel on a circular or helical trajectory. The bending radial effect of the beam can be achieved by extending dipole sections on the same plane. In accelerator physics, dipole electromagnets are designed to achieve trajectory (or 'orbit') of the particles for circular accelerators.
Due to the fact that the force on a charged particle by a dipole electromagnet can be explained by the Lorentz force law, where a charged particle experiences a force of F=qE+qvxB, latest technology has further explore the applications of dipole magnets such as:
- √ Injection and ejection of particles into the accelerator
- √ Correction of orbit errors
- √ Generation of synchrotron radiation
- √ Deflect moving particles include isotope mass measurement in mass spectrometry, and particle momentum measurement in particle physics.
The amount of force that can be applied to a charged particle by a dipole magnet is one of the limiting factors for modern synchrotron and cyclotron proton and ion accelerators. As the energy of the accelerated particles increases, they require more force to change direction and require larger B fields to be applied. Limitations on the amount of B field that can be produced with modern dipole electromagnets require synchrotrons or cyclotrons to increase in size such as increasing the number of dipole magnets to compensate for increases in particle velocity. In the largest modern synchrotron, the large hadron collider, consists of over a thousand dipole electromagnets to bend the path of the particle beam.
Custom Dipole Magnet Models
FAB135-3400-300
- 135 degree dipole magnet
- Arc length 3,400mm (effective length: 3,400mm)
- Height 500mm,
- Deflection angle 135°
- Deflection radius: 1,443mm
- Air gap 300mm.
- Field strength 1.63T,
- Weight: 55Ton
FAB180-350
- Deflection angle 180°
- Length:4,589mm
- Width: 2,433mm
- Height:2,463
- Air gap: 350mm
- Field strength:0.6T
- Weight: 65Ton
FAB16-206
- Radiation-resistant Dipole Magnet
- Core material: DT4
- Length: 2,667mm
- Width: 2,540mm
- Height: 2,583mm
- Field strength: 1.6T
- Air gap: 206mm
- Weight: 86Ton
Fabmann provides custom fabrication for all kinds of dipole magnets designed for different applications, and our design and engineering team is able to optimize your specification with most suitable material and fabrication solution. Our production and quality team take strict production process to make sure all details are captured for customer satisfaction, and we send full test reports for each model before delivery. Normally, the streamlining of design takes 3-5weeks depending upon our client's workload, and production takes 10 weeks, and full testing takes 1 week.
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