Magnetic Field Calculations for the Proposed Superconducting Cyclotron at the University of Milan

1977 ◽  
Vol 24 (3) ◽  
pp. 1168-1170 ◽  
Author(s):  
E. Acerbi ◽  
G. Bellomo ◽  
M. Castiglioni ◽  
C. De Martinis ◽  
E. Fabrici
Keyword(s):  
Magnetic Field ◽  
Superconducting Cyclotron ◽  
The University

Magnetic Field Optimization and Tolerance Study of a Medical Superconducting Cyclotron

2021 ◽  
pp. 1-1
Author(s):  
Zou Wu ◽  
Kaizhong Ding ◽  
Yuntao Song ◽  
Junjun Li ◽  
Feng Jiang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Superconducting Cyclotron ◽  
Tolerance Study

scholarly journals Comparison of the observed dependence of large-scale Birkeland currents on solar wind parameters with that obtained from global simulations

2011 ◽  
Vol 29 (10) ◽  
pp. 1809-1826 ◽  
Author(s):  
H. Korth ◽  
L. Rastätter ◽  
B. J. Anderson ◽  
A. J. Ridley
Keyword(s):  
Magnetic Field ◽  
Solar Wind ◽  
Large Scale ◽  
Coupled Model ◽  
Total Current ◽  
Modeling Framework ◽  
Rate Of Increase ◽  
Solar Wind Parameters ◽  
The University ◽  
Birkeland Currents

Abstract. Spatial distributions of the large-scale Birkeland currents derived from magnetic field data acquired by the constellation of Iridium Communications satellites have been compared with global-magnetosphere magneto-hydrodynamic (MHD) simulations. The Iridium data, spanning the interval from February 1999 to December 2007, were first sorted into 45°-wide bins of the interplanetary magnetic field (IMF) clock angle, and the dependencies of the Birkeland currents on solar wind electric field magnitude, Eyz, ram pressure, psw, and Alfvén Mach number, MA, were then examined within each bin. The simulations have been conducted at the publicly-accessible Community Coordinated Modeling Center using the University of Michigan Space Weather modeling Framework, which features a global magnetosphere model coupled to the Rice Convection Model. In excess of 120 simulations with steady-state conditions were executed to yield the dependencies of the Birkeland currents on the solar wind and IMF parameters of the coupled model. Averaged over all IMF orientations, the simulation reproduces the Iridium statistical Birkeland current distributions with a two-dimensional correlation coefficient of about 0.8, and the total current agrees with the climatology averages to within 10%. The total current for individual events regularly exceeds those computed from statistical distributions by factors of ≥2, resulting in larger disparities between observations and simulations. The simulation results also qualitatively reflect the observed increases in total current with increasing Eyz and psw, but the model underestimates the rate of increase by up to 50%. The equatorward expansion and shift of the large-scale currents toward noon observed for increasing Eyz are also evident in the simulation current patterns. Consistent with the observations, the simulation does not show a significant dependence of the total current on MA.

scholarly journals Final Design of the Magnetic Field for the K-800 Superconducting Cyclotron at MSU

1981 ◽  
Vol 28 (3) ◽  
pp. 2749-2751 ◽  
Author(s):  
F. G. Resmini ◽  
G. Bellomo ◽  
H. G. Blosser ◽  
E. Fabrici ◽  
D. Johnson
Keyword(s):  
Magnetic Field ◽  
Superconducting Cyclotron ◽  
Final Design ◽  
The Magnetic Field

Model Magnet for the Proposed Superconducting Cyclotron at the University of Milan

1977 ◽  
Vol 24 (3) ◽  
pp. 1109-1111 ◽  
Author(s):  
E. Acerbi ◽  
G. Bellomo ◽  
C. Birattari ◽  
M. Castiglioni ◽  
C. De Martinis ◽  
...  
Keyword(s):  
Superconducting Cyclotron ◽  
The University

CrowdMag for personal interaction with Arctic magnetic variation

2020 ◽  
Author(s):  
Rick Saltus ◽  
Manoj Nair
Keyword(s):  
Magnetic Field ◽  
Citizen Science ◽  
Research Experience ◽  
Science Outreach ◽  
Aurora Borealis ◽  
University Of Colorado ◽  
Arctic Regions ◽  
Personal Interaction ◽  
The Earth ◽  
The University

<p>The Earth’s magnetic field is especially dynamic at high latitudes.  The most awesome manifestation of this is certainly the aurora borealis or northern lights – caused by the interaction of the solar wind with the Earth’s magnetic field.  Aside from the aurora you can’t see these magnetic variations.  But your phone can.  Virtually every modern smartphone is equipped with a 3-component magnetometer to enable the compass pointing capability for navigation.  CrowdMag is a popular NOAA/CIRES citizen science app that we developed to tap into your smartphone’s magnetometer.  It lets you interact with the Earth’s magnetic field.</p><p>The purpose of this presentation is to highlight the possibilities for using CrowdMag for science outreach and engagement, particularly in Arctic regions where day-to-day magnetic variations can exceed hundreds of nano-Teslas.  We will show example projects that were carried out by summer interns as part of the University of Colorado’s “Research Experience for Community College Students” (RECCS) program.  CrowdMag can be used to carry out various simple experiments for mapping and investigating the Earth’s magnetic field.  We seek input and collaboration with others interested in Citizen Science and outreach in Arctic regions.   </p>

Development of High Strength-High Conductivity Cu-6 wt% Ag Alloy for High Field Magnet

MRS Advances ◽  
2015 ◽  
Vol 1 (17) ◽  
pp. 1137-1148 ◽  
Author(s):  
Yoshikazu Sakai ◽  
Takaaki Hibaru ◽  
Kiyoshi Miura ◽  
Akira Matsuo ◽  
Koushi Kawaguchi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Heat Treatment ◽  
High Field ◽  
High Strength ◽  
Treatment Method ◽  
High Conductivity ◽  
Pulsed Magnets ◽  
The Cost ◽  
The University ◽  
Heat Treatment Method

ABSTRACTOne of the authors developed the high strength and high conductivity Cu-24 wt% Ag alloy as a conductor material for high field magnets twenty years ago.Wire and sheet of the alloy have been used as a conductor material for pulsed magnets or resistive magnets of the high magnetic field facilities of each country. However, the alloy required large quantities of Ag addition to achieve high strength. The cost performance and workability of the alloy were not good for that. So, we investigated possibility of low Cu-Ag alloy for decreasing in material cost and improving in workability. We succeeded in the development of the Cu-6 wt% Ag alloy by the new heat treatment which is superior to the characteristic of the Cu-24 wt% Ag alloy even if the amount of Ag content is decreased in 1/4.At present, we make a lot of high field pulsed magnets by using the Cu-6 wt% Ag wire manufactured industrially, and do that magnetic field experiment and are getting good results at the ISSP, the university of Tokyo. We will talk about the characteristic, new heat treatment method and the manufacturing process of the conductor material for the Cu-6 wt% Ag alloy.

Survey measurements of the magnetic field of the University of Manitoba spiral ridge cyclotron

1983 ◽  
Vol 207 (3) ◽  
pp. 493-495 ◽  
Author(s):  
J. Bruckshaw ◽  
V. Derenchuk ◽  
I. Gusdal ◽  
J. Lancaster ◽  
A. McIlwain ◽  
...  
Keyword(s):  
Magnetic Field ◽  
University Of Manitoba ◽  
The University ◽  
The Magnetic Field

scholarly journals Microstructure Refinement for Fe-34Mn-10Al-0.76C Alloy Using Variable Pulsing Magnetic Field (PMF) Solidification

2020 ◽  
Vol 9 (3) ◽  
pp. 1
Author(s):  
Eisa A. Almeshaiei ◽  
Lubanah Ahmad ◽  
Ibrahim Elgarhi
Keyword(s):  
Magnetic Field ◽  
Control Sample ◽  
Dendritic Structure ◽  
Thermal Conditions ◽  
Growth Direction ◽  
Optical Scanning ◽  
Strong Force ◽  
Dendrites Growth ◽  
Pulsed Electromagnetic ◽  
The University

Background: The effect of the pulsed electromagnetic fields with different fluxes (voltages) on the microstructure of an alloy during all stages of solidification under specified thermal conditions will be discussed in this project. Experiments were carried out in the university laboratory for this purpose. The optical scanning, electron microscopy scanning, and dispersed X-ray analysis methods were used to analyze the results of the micro-solidification formulations of the alloy with different fluxes. To perform the required evaluation, a control sample was tested without any treatment, then the results of every flux were compared with the results of this control sample. The applied magnetics flux and Lorentz forces were considered as the main reasons for the achieved grain refining and diffusion of the improved solubility in the sample. The fully equiaxed dendritic structure has been realized for the aluminum alloys at 180 Volts flux. Lorentz's strong force, induced by the magnetic field, deactivates the developing direction of the bifurcation (dendrites), as well as spoils the directions of growing the intermetallic alloy, as a result of the formation of solid microstructures. Further refinements were achieved, by increasing the voltages. Therefore, it can be concluded that the pulsed electromagnetic field is a promising technique that can be utilized in the metallurgy evolution. The effect of PMF with different fluxes on the microstructure of the Fe-34Mn-10Al-0.76C alloy samples will be examined experimentally using optical scanning, EDX and SEM and by applying various analysis techniques. Then, compared with the control sample that don’t treated with any PMF. The initial dendrites growth direction and size were changed according to the PMF flux. Also, the lengths of the initial dendrites were reduced by increasing the voltage, which led to the formation of different dendrite equiaxed grains. The PMF flux affects the initial dendrites growth direction and size. While, increasing the PMF voltage reduces the lengths of the initial dendrites. Moreover, the PMF has a great impact on diffusion of solute through solidification that then influences the formation of eutectic microstructural.

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