Influence on collective effects on the performance of high-luminosity colliders

Conference · Wed Oct 10 04:00:00 EDT 1990 · AIP Conference Proceedings (American Institute of Physics); (USA)

OSTI ID:5933197

Zisman, M S ^[1]

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1. Exploratory Studies Group, Accelerator Fusion Research Division, Lawrence Berkeley Laboratory, Berkeley, CA (USA)

The design of a high-luminosity electron-position collider to study B physics is a challenging task from many points of view. In this paper we consider the influence of collective effects on the machine performance; most of our findings are generic,'' in the sense that they depend rather weakly on the details of the machine design. Both single-bunch and coupled-bunch instabilities are described and their effects are estimated based upon an example machine design (APIARY-IV). In addition, we examine the possibility of emittance growth from intrabeam scattering and calculate the beam lifetime from both Touschek and gas scattering. We find that the single-bunch instabilities should not lead to difficulty, and that the emittance growth is essentially negligible. At a background gas pressure of 10 nTorr, beam lifetimes of only a few hours are expected. Multibunch growth rates are very severe, even when using an optimized RF system consisting of single-cell, room-temperature RF cavities with geometrical shapes typical of superconducting cavities. Thus, a powerful feedback system will be required. In terms of collective effects, it does not appear that there are any fundamental problems standing in the way of successfully designing and building a high-luminosity B factory.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5933197
• Report Number(s): CONF-9002118--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (USA) Journal Volume: 214:1
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430400* -- Particle Accelerators-- Storage Rings
BEAM BUNCHING
BEAM DYNAMICS
BEAM EMITTANCE
BEAMS
CAVITY RESONATORS
COLLIDING BEAMS
DATA
DESIGN
ELECTRON BEAMS
ELECTRON-POSITRON INTERACTIONS
ELECTRONIC EQUIPMENT
ENERGY RANGE
EQUIPMENT
GEV RANGE
GEV RANGE 10-100
INFORMATION
INSTABILITY
INTERACTIONS
LEPTON BEAMS
LEPTON-LEPTON INTERACTIONS
NUMERICAL DATA
PARTICLE BEAMS
PARTICLE INTERACTIONS
RESONATORS
RF SYSTEMS
STORAGE RINGS