ddy current,BH magnet,injection,CSNS/RCS

作者:宋金星;康文;霍丽华;郝耀斗;王磊;
关键词:eddy current,BH magnet,injection,CSNS/RCS
单位:Institute of High Energy Physics,Chinese Academy of

Sciences;Graduate University of Chinese Academy of Sciences;
摘要:The injecton pulsed bending bump magnets of Rapid Cycling

Synchrotron (RCS) in China Spallation Neodymium Magnets
http://www.999magnet.com/products/110-sintered-neodymium-magnets Neutron Source (CSNS)

consist of four horizontal bending (BH) magnets and four vertical

bending (BV) magnets.The BH magnets are operated at a repetition

rate of 25 Hz and are excited with a trapezoid rectangle waveform

with about 1.6 milliseconds duration.The eddy current is induced

in BH magnets and in the end plates it is expected to be large,so

the heat generation is of our great concern.In this paper,the

eddy current loss of the BH magnet has been investigated and

calculated by using a coupling method of 3D electromagnetic and

thermal analysis.The accuracy of the analysis is confirmed by

testing the prototype BH magnet.The end plate temperature of the

BH magnet provided with slit cuts has been decreased obviously

and met the requirements.