This paper introduces the aims and the preliminary design of the Reference Magnetic System (RMS) for the LHC that will track and provide information on the magnetic state of the machine during operation. The necessity of the RMS will be justified towards the requirements for the LHC operation. The RMS should have three major actors: the database of the series measurements, the magnets field mod...

Introduction MRI technology utilizes highly sophisticated superconducting (SC) magnet technology. During the prototyping of the SC MRI magnet, quenching (i.e., catastrophic helium evaporation and complete loss of liquid helium) can often occur. Therefore, a reliable quench analysis is very important for the development of SCMRI magnets. However, it is difficult to accurately model quench charac...

Isotropic Nd-Fe-B thick-film magnets have been prepared using a pulsed laser deposition (PLD) method with the control of laser energy density (LED) followed by post-annealing. The characteristics of the method are a high deposition rate up to several tens of microns per hour together with a reliability of magnetic properties due to the good transfer of composition from an Nd-Fe-B target to a fi...

We show that introducing electrons in magnetic clusters and molecular magnets lead to rich phase diagrams with a variety of low-spin and high-spin states allowing for multiple switchability. The analysis is carried out for a quantum spin-fermion model using the exact diagonalization, and the cluster mean-field approach. The model is relevant for a number of molecular magnets with triangular mot...

The Electron Stretcher Facility ELSA of Bonn University provides a polarized electron beam of up to 3.2GeV. In the stretcher ring various depolarizing resonances are crossed during the fast energy ramp of 6GeV/s. The high polarization degree of up to 70% can only be conserved by taking several appropriate countermeasures. Concerning integer resonances, additional harmonic horizontal fields are ...

Electron beams from laser-plasma wakefield accelerators have low transverse emittance, comparable to those from conventional radio frequency accelerators, which highlights their potential for applications, many of which will require the use of quadrupole magnets for optimal electron beam transport. We report on characterizing electron bunches where double bunches are observed under certain cond...

Anisotropic bonded magnets are fabricated by surfactant-assisted ball milling in a magnetic field and magnetic field alignment of the milled chip-like nanoparticles of the Sm–Co and Nd–Fe–B materials. It is found that the application of magnetic fields during the ball milling strengthens the anisotropy of the chips and therefore improves the alignment. For SmCo5 phase-based chips, for instance,...

This paper analyzes some basic design aspects for a three phase diamagnetic levitating rotor. A proposed design uses a triangular configuration of magnets for a levitating rotor. A formula for finding a the approximate levitation point of the rotor is given. The proposed system uses three phase alternating current and a nine coil configuration to drive the levitating rotor. For this configurati...