Nonlinear dynamics in the SSC (Superconducting Super Collider), Experiment E778

Conference · Sat Apr 01 00:00:00 EST 1989

OSTI ID:7050951

Peggs, S

This paper concentrates on the accelerator physics processes which are expected to limit the performance of the SSC. There are two broad classes of accelerator physics processes --- single particle and collective. Collective effects are caused by the macroscopic electromagnetic fields generated by the numerous circulating charged particles (about 10{sup 10} particles per bunch). These fields are influenced by the environment, such as the metallic vacuum chamber walls, and act back upon the circulating charged particles. For example, a single bunch can disrupt itself significantly on one pass through a particular structure in an accelerator. Or, if the fields ring for long enough and have the right frequency, a single bunch can be affected on subsequent turns by the disturbance it laid down on a first turn. Multi-bunch effects occur when a trailing bunch reacts to the ringing fields laid down by preceding bunches. The performance of the SSC is considered here only in the context of single particle models, in which a test particle circulates a collider for many turns in the presence of static electromagnetic fields. These fields are conceptually divided into linear restoring forces --- in which the motion is stable --- and nonlinear perturbations.

• Research Organization: Lawrence Berkeley Lab., CA (USA). SSC Central Design Group
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC02-89ER40486
• OSTI ID: 7050951
• Report Number(s): SSC-216; CONF-880717-; ON: DE90013030; TRN: 90-028679
• Resource Relation: Conference: NATO Advanced Study Institute on techniques and concepts of high energy physics, St. Croix (Virgin Islands (U.S.)), 14-25 Jul 1988
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
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MAGNETIC MOMENTS
MODULATION
ORBITS
RESONANCE
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SUPERCONDUCTING SUPER COLLIDER
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430200* - Particle Accelerators- Beam Dynamics
Field Calculations
& Ion Optics