Influence on collective effects on the performance of high-luminosity colliders
Abstract
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.
- Authors:
-
- Exploratory Studies Group, Accelerator Fusion Research Division, Lawrence Berkeley Laboratory, Berkeley, CA (USA)
- Publication Date:
- OSTI Identifier:
- 5933197
- Report Number(s):
- CONF-9002118-
Journal ID: ISSN 0094-243X; CODEN: APCPC; TRN: 91-012716
- DOE Contract Number:
- AC03-76SF00098
- Resource Type:
- Conference
- Journal Name:
- AIP Conference Proceedings (American Institute of Physics); (USA)
- Additional Journal Information:
- Journal Volume: 214:1; Conference: 1990 Lake Louise winter institute: the standards model and beyond, Lake Louise (Canada), 18-24 Feb 1990; Journal ID: ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS; STORAGE RINGS; DESIGN; BEAM BUNCHING; BEAM DYNAMICS; BEAM EMITTANCE; CAVITY RESONATORS; COLLIDING BEAMS; ELECTRON BEAMS; ELECTRON-POSITRON INTERACTIONS; GEV RANGE 10-100; INSTABILITY; NUMERICAL DATA; RF SYSTEMS; BEAMS; DATA; ELECTRONIC EQUIPMENT; ENERGY RANGE; EQUIPMENT; GEV RANGE; INFORMATION; INTERACTIONS; LEPTON BEAMS; LEPTON-LEPTON INTERACTIONS; PARTICLE BEAMS; PARTICLE INTERACTIONS; RESONATORS; 430400* - Particle Accelerators- Storage Rings
Citation Formats
Zisman, M S. Influence on collective effects on the performance of high-luminosity colliders. United States: N. p., 1990.
Web.
Zisman, M S. Influence on collective effects on the performance of high-luminosity colliders. United States.
Zisman, M S. 1990.
"Influence on collective effects on the performance of high-luminosity colliders". United States.
@article{osti_5933197,
title = {Influence on collective effects on the performance of high-luminosity colliders},
author = {Zisman, M S},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/5933197},
journal = {AIP Conference Proceedings (American Institute of Physics); (USA)},
issn = {0094-243X},
number = ,
volume = 214:1,
place = {United States},
year = {Wed Oct 10 00:00:00 EDT 1990},
month = {Wed Oct 10 00:00:00 EDT 1990}
}