Chromaticity correction for the SSC Collider Rings

Conference · Sat May 01 00:00:00 EDT 1993

OSTI ID:7368554

Sen, T; Nosochkov, Y; Pilat, F; Stiening, R ^[1]; Ritson, D M ^[2]

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1. Superconducting Super Collider Lab., Dallas, TX (United States)
2. Stanford Linear Accelerator Center, Menlo Park, CA (United States)

We address the issue of correcting higher order chromaticities of the collider with one or more low [beta] insertions. The chromaticity contributed by the interaction regions (IRS) depends crucially on the maximum value of [beta] in the two IRs in a cluster, the phase advance between adjacent interaction points (IPs), and the choice of global tune. We propose a correction scheme in which the linear chromaticity is corrected by a global distribution of sextupoles and the second order chromaticity of each IR is corrected by a more local set of sextupoles. Compared to the case where only the linear chromaticity is corrected, this configuration increases the momentum aperture more than three times and also reduces the [beta] beat by this factor. With this scheme, the tune can be chosen to satisfy other constraints and the two IRs in a cluster can be operated independently at different luminosities without affecting the chromatic properties of the ring.

• Research Organization: Superconducting Super Collider Lab., Dallas, TX (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC35-89ER40486
• OSTI ID: 7368554
• Report Number(s): SSCL-Preprint-413; CONF-930511-169; ON: DE93016108
• Resource Relation: Conference: International particle accelerator conference, Washington, DC (United States), 17-20 May 1993
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM OPTICS
CHROMATIC ABERRATIONS
CORRECTIONS
SUPERCONDUCTING SUPER COLLIDER
ERRORS
SUPERCONDUCTING MAGNETS
TUNING
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
MAGNETS
STORAGE RINGS
SUPERCONDUCTING DEVICES
430200* - Particle Accelerators- Beam Dynamics
Field Calculations
& Ion Optics