Title :
Equivalent circuit analysis of the RHIC injection kicker
Author :
Hahn, H. ; Ratti, A.
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
The RHIC injection kicker is built as a travelling wave structure in order to assure the required 95 nsec risetime in the deflection strength. The kicker is constructed from 14 cells, each 7.5 cm long, with alternating ferrite and high-permittivity dielectric sections. The cell structure permits an analysis of the electrical properties of the kicker using lumped L, C, and R circuit elements. Their values are obtained directly from impedance measurements of the full-length kicker, the inductance and shunt capacitance values by measuring the input impedance at 1 MHz with the output shorted and open, respectively. A lossy series resonance circuit in each cell is found to reproduce the measured input impedance of the terminated kicker up to ~100 MHz. The validity of the equivalent circuit was confirmed by comparing the measured output current pulse shape time with that computed by the P-Spice program
Keywords :
accelerator magnets; colliding beam accelerators; equivalent circuits; ion accelerators; particle beam injection; storage rings; synchrotrons; 1 MHz; P-Spice program; RHIC injection kicker; cell structure; deflection strength; equivalent circuit analysis; high-permittivity dielectric sections; impedance measurements; inductance; lossy series resonance circuit; shunt capacitance values; travelling wave structure; Capacitance measurement; Circuit analysis; Dielectric measurements; Equivalent circuits; Ferrites; Impedance measurement; Inductance measurement; Pulse measurements; Resonance; Shape measurement;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.749597
