Correction of skew-quadrupole errors in RHIC

Conference · Tue Jan 01 04:00:00 EST 1991

OSTI ID:5740200

Dell, G F; Hahn, H; Lee, S Y; Parsen, G; Tepikian, S

The correction scheme for skew-quadrupole (a{sub 1}) errors in the Relativistic Heavy Ion Collider is presented. The a{sub 1} errors result from fabrication and from installation errors. At the selected betatron tune of v{sub x} {equals} 28.826 and v{sub y} {equals} 28. 820, the principal resonances driven by a{sub 1} errors are v{sub x} {minus} v{sub y} {equals} 0, the sum resonances near v{sub x} + v{sub y} which cause residual tune splitting and distortion of beta function, and v{sub y} {equals} 28 29 which cause vertical dispersion. Skew quadrupole correctors located in the insertions and arcs will be used to correct the coupling and sum resonances and, if required, separate correctors in the arcs could be used for vertical dispersion correction. The study of the a{sub 1} correction system confirmed that correction is possible at {beta}{sup {asterisk}} {equals} 2 m and {beta}{sup {asterisk}} {equals} 6 m and that the required corrector strengths are consistent with those specified for RHIC. 6 refs., 3 figs., 3 tabs.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• Sponsoring Organization: DOE; USDOE, Washington, DC (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5740200
• Report Number(s): BNL-45521; CONF-910505--280; ON: DE91014035
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200 -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
ACCELERATORS
BEAM DYNAMICS
BETATRON OSCILLATIONS
BROOKHAVEN RHIC
COMPUTERIZED SIMULATION
CORRECTIONS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
ERRORS
HEAVY ION ACCELERATORS
MAGNETS
MULTIPOLES
OSCILLATIONS
QUADRUPOLES
RESONANCE
SIMULATION
STORAGE RINGS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
TUNING