scholarly journals Absolute calibration of the NMR magnetometers and of the magnetic field measuring system used in the CERN muon storage ring

1977 ◽  
Vol 143 (2) ◽  
pp. 219-225 ◽  
Author(s):  
K. Borer ◽  
F. Lange
2009 ◽  
Vol 24 (05) ◽  
pp. 1057-1067
Author(s):  
HE ZHANG ◽  
MARTIN BERZ

The Hefei light source (HLS) is a second generation synchrotron radiation light source, in which a superconducting wiggler is installed and operating. The effects of the wiggler on the beam dynamics on the HLS storage ring are studied, in order to make sure the wiggler can operate properly when the ring is working in the high brilliance mode. We generate a model of the magnetic field in the midplane of the wiggler. The 3D magnetic field model is also builded up by COSY infinity 9.0. Both the linear and nonlinear effects of the wiggler are discussed. The vertical tune is changed from 2.535 to 2.567 and the vertical beta function is heavily distorted, while a symplectic tracking study shows the dynamic aperture is only slightly affected by the wiggler. And the wiggler should be able to run on the high brilliance mode after the linear effects get compensated.


2015 ◽  
Vol 738-739 ◽  
pp. 893-898
Author(s):  
Jun Feng Zhu ◽  
Xin Yan ◽  
Ling Ling Zhou ◽  
Xiao Xin Zhao

Based on the basic principles of electromagnetism, the application of Shanghai Fudan-day Welcomes UNESCO Instruments Ltd. THQHC-1 type Helmholtz coil magnetic field measuring instrument for measuring coil uniform magnetic field generates a magnetic field on the carrier to get round the coil axis, online circle center at (coordinate origin) at the maximum magnetic field strength. Starting from the coordinate origin, to the sides, the magnetic field lines accelerate the decline, when the distance exceeds the coil radius, the decelerating decline. Conclusions for the understanding of a uniform magnetic field reference.


Tribologia ◽  
2018 ◽  
Vol 278 (2) ◽  
pp. 117-122 ◽  
Author(s):  
Marcin SZCZĘCH ◽  
Wojciech HORAK

Magnetic fluids are materials whose physical properties can be changed by a magnetic field of a given intensity value. One of the fundamental research areas for determining the properties of magnetic fluids is rheological measurement. The basic method for determining the rheological properties of this type of smart material is by using rotational rheometers equipped with parallel plate measuring geometry. The paper presents the results of numerical simulation and experimental research on the magnetic induction distribution in the working gap for this type of measuring geometry. The conducted analyses allowed the influence of selected parameters on the uniformity of the magnetic field distribution in the magnetic fluid to be determined. The work paid attention to the problems occurring in the development of measuring systems for determining the properties of magnetic fluids under the conditions of a magnetic field.


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