Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 3
Book Description
Effects of Errors on the Dynamic Aperture of the Advanced Photon Source Storage Ring
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 3
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 3
Book Description
Effects of Errors on the Dynamic Aperture of the Advanced Photon Source Storage Ring
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 3
Book Description
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 {plus minus}5 standard deviation units. For each error, the average and rms spread of the stable amplitudes are determined for ten distinct machines, defined as ten different seeds to the random distribution, and for five distinct initial directions of the tracking particle. 4 refs., 4 figs., 1 tab.
Publisher:
ISBN:
Category :
Languages : en
Pages : 3
Book Description
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 {plus minus}5 standard deviation units. For each error, the average and rms spread of the stable amplitudes are determined for ten distinct machines, defined as ten different seeds to the random distribution, and for five distinct initial directions of the tracking particle. 4 refs., 4 figs., 1 tab.
Establishment of a Tolerance Budget for the Advanced Photon Source Storage Ring
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 3
Book Description
The limitations on the dynamic aperture of the Advanced Photon Source storage ring due to magnet misalignments and fabrication errors are presented. The reduction of the dynamic aperture is analyzed first for each error considered individually, and then for combined error multipole fields in dipole, quadrupole, and sextupole magnets, excluding and including magnet misalignments. Since misalignments of the strong quadrupoles in the ring induce large orbit distortions, the effects on the dynamic aperture are investigated before and after orbit correction. Effects of off-momentum particles and the tune dependence with momentum are also presented. This extensive analysis leads to the establishment of a tolerance budget. With all the errors set at the tolerance level and with the orbit distortions corrected, the dynamic aperture reduction is no greater than 50% of that of the ideal machine.
Publisher:
ISBN:
Category :
Languages : en
Pages : 3
Book Description
The limitations on the dynamic aperture of the Advanced Photon Source storage ring due to magnet misalignments and fabrication errors are presented. The reduction of the dynamic aperture is analyzed first for each error considered individually, and then for combined error multipole fields in dipole, quadrupole, and sextupole magnets, excluding and including magnet misalignments. Since misalignments of the strong quadrupoles in the ring induce large orbit distortions, the effects on the dynamic aperture are investigated before and after orbit correction. Effects of off-momentum particles and the tune dependence with momentum are also presented. This extensive analysis leads to the establishment of a tolerance budget. With all the errors set at the tolerance level and with the orbit distortions corrected, the dynamic aperture reduction is no greater than 50% of that of the ideal machine.
Tracking Studies of Insertion Device Effects on Dynamic Aperture in the APS Storage Ring
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 4
Book Description
We studied the effects of an insertion device (ID) on the dynamic aperture in the 7-GeV Advanced Photon Source (APS) storage ring using the program RACETRACK. We found that the nonlinear effect of the ID is the dominant effect on the dynamic aperture reduction compared to the other multipole errors which exist in the otherwise ideal lattice. The previous study of dynamic aperture was based on the assumption that the effect of the fast oscillating terms in L. Smith's Hamiltonian is small, and hence can be neglected in the simulation. The remarkable agreement between the previous study and the current results using RACETRACK, including all effects of the fast oscillating terms, justified those assumptions at least for the APS ring.
Publisher:
ISBN:
Category :
Languages : en
Pages : 4
Book Description
We studied the effects of an insertion device (ID) on the dynamic aperture in the 7-GeV Advanced Photon Source (APS) storage ring using the program RACETRACK. We found that the nonlinear effect of the ID is the dominant effect on the dynamic aperture reduction compared to the other multipole errors which exist in the otherwise ideal lattice. The previous study of dynamic aperture was based on the assumption that the effect of the fast oscillating terms in L. Smith's Hamiltonian is small, and hence can be neglected in the simulation. The remarkable agreement between the previous study and the current results using RACETRACK, including all effects of the fast oscillating terms, justified those assumptions at least for the APS ring.
Energy Research Abstracts
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 508
Book Description
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 508
Book Description
Conference Record of the 1991 IEEE Particle Accelerator Conference
Author:
Publisher:
ISBN:
Category : Nuclear engineering
Languages : en
Pages : 746
Book Description
Publisher:
ISBN:
Category : Nuclear engineering
Languages : en
Pages : 746
Book Description
Effects of Construction and Alignment Errors on the Orbit Functions of the Advanced Photon Source Storage Ring
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 3
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 3
Book Description
Experimental Measurement of Dynamic Aperture at the Photon Factory Storage Ring
Author: Y. Kobayashi
Publisher:
ISBN:
Category :
Languages : en
Pages : 3
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 3
Book Description
Proceedings of the 1995 Particle Accelerator Conference
Author:
Publisher:
ISBN:
Category : Nuclear engineering
Languages : en
Pages : 722
Book Description
Publisher:
ISBN:
Category : Nuclear engineering
Languages : en
Pages : 722
Book Description
Dynamic Aperture for High-brilliance Optics of the Photon Factory Storage Ring
Author: Eun-San Kim
Publisher:
ISBN:
Category :
Languages : en
Pages : 17
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 17
Book Description