Title :
Analysis and measurements of eddy current effects of a beam tube in a pulsed magnet
Author :
Fang, S. ; Chou, W.
Author_Institution :
Fermi Nat. Accel. Lab., Batavia, IL, USA
Abstract :
The power supply design of the γt-jump system in FNAL Main Injector uses a resonant circuit. A critical design parameter is the AC losses of the beam tube in a pulsed quadrupole. This paper gives an analysis to this problem. An equivalent circuit model based on the impedance measurement was established. The measured and calculated losses are in agreement. Another effect of the eddy current is the distortion of the magnetic field inside the beam tube. A Morgan coil was used for field measurements up to 10 KHz. These results are presented in this paper
Keywords :
accelerator magnets; booster injectors; equivalent circuits; proton accelerators; pulsed power supplies; synchrotrons; AC losses; FNAL Main Injector; Morgan coil; eddy current effects; equivalent circuit model; impedance measurement; magnetic field; pulsed magnet; pulsed quadrupole; resonant circuit; Current measurement; Distortion measurement; Eddy currents; Equivalent circuits; Magnetic analysis; Magnetic field measurement; Power supplies; Power system modeling; Pulsed power supplies; RLC circuits;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.753171
