H. Schneider, T. Andersen, J. D. Mønster, M. P. Madsen, A. Knott, M. A. E. Andersen
Technical University of Denmark, Lyngby, Denmark
This paper investigates a hybrid winding concept for a toroidal inductor by simulating the winding resistance as a function of frequency. The problem of predicting the resistance of a non-uniform and complex winding shape is solved using 3D Finite Element Modeling. A prototype is built and tested experimentally to verify the simulation results. Finally, the COMSOL Multiphysics® LiveLink™ to ...
Modeling of Rotating Magnetic Field Eddy Current Probe for Inspection of Tubular Metallic Components
T. V. Shyam, B. S. V. G. Sharma, K. Madhusoodanan
Bhabha Atomic Research Centre, Mumbai, Maharashtra, India
Rotating Magnetic Field Eddy current technique is a promising technique for inspection of flaws in metallic tubular components. Three primary coils, 120 degrees apart in space, are excited with three phase current source, by virtue, a rotating magnetic field polarised in radial direction is generated. This radial field interacts with metallic tube and generates ...
E. Karentzos , T. Alexopoulos ,
 National Technical University of Athens, CERN, Switzerland
 National Technical University of Athens, Greece
We present studies of the electric field configuration that guides the electrons to the strips through the mesh and its importance to the detector’s optimal operation. Furthermore, analysis of the gas propagation inside the chamber for different gas distribution schemes is discussed. All the various studies which have been studied with the COMSOL Multiphysics® software, are in a good agreement ...
O. Maloberti , O. Mansour 
 ESIEE Amiens, Amiens, France
At present, no 3D transient magnetic and electric fields formulation with strong eddy currents and high electric fields is available in the physical applications with COMSOL Multiphysics® software. However, some industrial products need such a tool, as it is the case for induction coils of pulsed magnetic technologies. The principle is to induce a force thanks to strong eddy currents induced by ...
R. Díaz de León-Zapata [1,2], B. Mora , M. Jose-Yacaman , F. J. Gonzalez 
 Instituto Tecnológico de San Luis Potosí, Av. Tecnológico s/n, San Luis Potosí, S.L.P., Mexico
 Universidad Autónoma de San Luis Potosí, CIACyT, San Luis Potosí, S.L.P., Mexico
 University of Texas at San Antonio, San Antonio, TX, USA
Auto assembled Ag-ZnO  star shaped nanostructures depicted in figure 1, presents their natural electromagnetic resonance at 60 THz. In this work we present that is possible to change this value by covering it with a variable in thickness layer of gold. The analysis is performed by numerical simulations using COMSOL Multiphysics® software.
J. Osorio Moreno, M. Pullia, C. Priano
Fondazione CNAO, Pavia, Italy
Resistive magnets are one of the principal components of ion medical accelerator systems used in heavy ion cancer treatment. To fulfill medical requirements, like the size of irradiation field and an uniform dose distribution, some magnets of the transport beam line may require large aperture and a large region where the magnetic field is within specifications (good field region). After a ...
N. Lawand, V. Lopez[1,2], P. French
Delft University of Technology, Delft, The Netherlands
Università degli studi di Napoli "Federico II", Naples, Italy
Cochlear Implants (CIs) are implantable prostheses that bypass the non-functional inner ear and directly stimulate the auditory nerve with electric currents, enabling deaf people to experience sound again. The CI electrode array sits inside the cochlea close to the auditory neurons. An ideal stimulation material must have low impedance with maximum charge transfer capacity in the electrochemical ...
T. Jayakumar, B. Purnachandra Rao, C. K. Mukhopadhyay, B. Sasi, V. Arjun, S. Thirunavukkarasu
Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, TN, India
Nondestructive Evaluation Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, TN, India
EMSI Section, Nondestructive Evaluation Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, TN, India
NDE Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, TN, India
Remote field eddy current (RFEC) technique is a method of detecting defects in ferromagnetic tubes. This is based on low frequency eddy current, which employs an exciter coil and a receiver coil separated by a characteristic distance. The exciter is fed with a low frequency sinusoidal current and the receiver coil senses the perturbation of the magnetic fields caused by the eddy currents in the ...
Development of Magnetic Field Components for the Polarisation Option of the Neutron Spectrometer FOCUS
L. Holitzner, U. Filges, J.P. Embs, T. Fennell, T. Panzner
Laboratory for Developments and Methods, Paul Scherrer Institut, Villigen, Switzerland
Laboratory for Neutron Scattering, Paul Scherrer Institut, Villigen, Switzerland
We show a new, favourable space-saving method to host a neutron polarizer in the iron-containing monochromator shielding of a time-of-flight spectrometer for cold neutrons. In this poster you can learn e.g., how to create a robust, homogeneous, rectangular magnetic field (here realized by permanent magnet queues inside an iron tube). The time-of-flight spectrometer FOCUS at the spallation ...
Prototype Probe Development for Liquid Injection Shutdown System Tube Gap Detection by Remote Field Pulsed Eddy Current Technique
T. V. Shyam, B. S. V. G. Sharma, J. N. Kayal
Bhabha Atomic Research Centre, Trombay, Mumbai, India
Pressurised Heavy Water Reactors (PHWR) play a prominent role in contributing power for the Nuclear Energy Programme in India. In 540MWe type PHWR reactors, there are horizontally placed Liquid Injection Shutdown System (LISS) tubes for injecting poison into the moderator to clamp down the nuclear power under trip conditions. The Horizontally placed LISS pipes are placed perpendicular to the ...