Title :
Design and measurement of the sextupole magnet for the APS storage ring
Author :
Turner, L.R. ; Thompson, K.M. ; Kim, S.H. ; Kim, K.
Author_Institution :
Adv. Photon Source, Argonne Nat. Lab., IL, USA
Abstract :
A prototype sextupole magnet has been designed, constructed, and measured for the storage ring of the Advanced Photon Source. The design approaches very closely to 120° rotation symmetry, in order to minimize all forbidden multipole components. The core is made of three identical stacks of laminations, each lamination consisting of two poles and the return yoke joining them. The antechamber of the thick aluminum vacuum chamber fits between two neighboring stacks. Computations and measurements of the sextupole strength B and multipole field components, both in the central region and integrated in the beam direction, show that the magnet meets the requirements for positron beam dynamics
Keywords :
beam handling equipment; electromagnets; electron accelerators; electron beams; storage rings; APS storage ring; Advanced Photon Source; Al; antechamber; central region; forbidden multipole components; laminations; multipole field components; positron beam dynamics; prototype; return yoke; sextupole magnet; sextupole strength; thick Al vacuum chamber; Assembly; Biomedical measurements; Coils; Lamination; Magnetic cores; Magnetic flux; Positrons; Saturation magnetization; Steel; Storage rings;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.309470
