Title :
RHIC AC dipole design and construction
Author :
Bai, M. ; Meth, M. ; Pai, C. ; Parker, B. ; Peggs, S. ; Roser, T. ; Sanders, R. ; Trbojevic, D. ; Zaltsman, A.
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
Two AC dipoles with vertical and horizontal magnetic field have been proposed at RHIC for applications in linear and non-linear beam dynamics and spin manipulations. A magnetic field amplitude of 380 Gm is required to produce a coherent oscillation of 5 times the rms beam size at the top energy. We take the AC dipole frequency to be 1.0% of the revolution frequency away from the betatron frequency. To achieve the strong magnetic field with minimum power loss, an air-core magnet with two seven turn winding of low loss Litz wire resonating at 64 kHz is designed. The system is also designed to allow one to connect the two magnet winding in series to resonate at 37 kHz for the spin manipulation. Measurements of a half length prototype magnet are also presented
Keywords :
accelerator magnets; colliding beam accelerators; ion accelerators; storage rings; 37 kHz; RHIC AC dipole design; air-core magnet; beam dynamics; betatron frequency; coherent oscillation; low loss Litz wire; magnetic field amplitude; seven turn winding; spin manipulations; Coils; Frequency; Magnetic field measurement; Magnetic fields; Optical beams; Particle beams; Protons; Prototypes; Structural beams; Wire;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.988193
