DIPOLE AND QUADRUPOLE SORTING FOR THE SNS RING.
The Spallation Neutron Source (SNS) accumulator ring is a high intensity ring and must have low uncontrolled losses for hands on maintenance. To achieve these low losses one needs very tight tolerance. These tight tolerances have been achieved through shimming the magnets and sorting. Dipoles are solid core magnets and had very good field quality but magnet to magnet variation were sorted out according to ITF, since all the dipole are powered with one power supply. Typically, sorting is done to minimize linear effects in beam dynamics. Here, sorting of quadrupoles was done according to a scheme, which allows reducing unwanted strength of nonlinear resonances. As a result, the strength of sextupole resonances for our base line tune-box was strongly reduced which was confirmed by a subsequent beam dynamics simulation.
- Research Organization:
- BROOKHAVEN NATIONAL LABORATORY (US)
- Sponsoring Organization:
- DOE/OFFICE OF SCIENCE (US)
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 15007970
- Report Number(s):
- BNL-71976-2004-CP; R&D Project: 86485; 39KC0200; TRN: US0402920
- Resource Relation:
- Conference: 9TH EUROPEAN PARTICLE ACCELERATOR CONFERENCE, LUCERNE (CH), 07/05/2004--07/09/2004; Other Information: PBD: 5 Jul 2004
- Country of Publication:
- United States
- Language:
- English
Similar Records
THE SNS RING DIPOLE MAGNETIC FIELD QUALITY.
Nonlinear dynamics experiments