Title :
Effects of errors on the dynamic aperture of the Advanced Photon Source storage ring
Author :
Bizek, H. ; Crosbie, E. ; Lessner, E. ; Teng, L. ; Wirsbinski, J.
Author_Institution :
Argonne Nat. Lab., IL, USA
Abstract :
The individual tolerance limits for alignment errors and magnet fabrication errors in the 7-GeV Advanced Photon Source storage ring are determined by computer-simulated tracking. Limits are established for dipole strength and roll errors, quadrupole strength and alignment errors, sextupole strength and alignment errors, as well as higher-order multipole strengths in dipole and quadrupole magnets. The effects of girder misalignments on the dynamic aperture are also studied. Computer simulations are obtained with the tracking program RACETRACK, with errors introduced from a user-defined Gaussian distribution, truncated at +or-5 standard deviation units.<>
Keywords :
beam handling equipment; beam handling techniques; physics computing; storage rings; Advanced Photon Source storage ring; RACETRACK; alignment errors; computer-simulated tracking; dipole strength; dynamic aperture; girder misalignments; higher-order multipole strengths; magnet fabrication errors; quadrupole strength; roll errors; sextupole strength; standard deviation units; tolerance limits; user-defined Gaussian distribution; Apertures; Computer errors; Damping; Fabrication; Gaussian distribution; Laboratories; Lattices; Particle tracking; Storage rings; Structural beams;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.164250
