skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Progress of the PEP-II-B-factory

Abstract

PEP-II is an e{sup +}e{sup -} B-Factory Collider located at SLAC operating at the Upsilon 4S resonance. PEP-II has delivered, over the past five years, an integrated luminosity to the BaBar detector of over 139 fb{sup -1} and has reached a luminosity of 6.58 x 10{sup 36}/cm{sup 2}/s. Steady progress is being made in reaching higher luminosity. The goal over the next several years is to reach a luminosity of at least 2 x 10{sup 34}/cm{sup 2}/s. The accelerator physics issues being addressed in PEP-II to reach this goal include the electron cloud instability, beam-beam effects, parasitic beam-beam effects, high RF beam loading, shorter bunches, lower beta y*, interaction region operation, and coupling control. A view of the PEP-II tunnel is shown in Figure 1. The present parameters of the PEP-II B-Factory are shown in Table 1 compared to the design. The present peak luminosity is 219% of design and the best integrated luminosity per month is 7.4 fb{sup -1} that is 225% of design. The best luminosity per month is shown in Figure 2. The integrated luminosity over a month is shown in Figure 3 and the total integrated luminosity in shown in Figure 4. The progress in luminositymore » has come from correcting the orbits, adding specific orbit bumps to correct coupling and dispersion issues, lowering the beta y* in the LER, and moving the fractional horizontal tunes in both rings to just above the half integer (<0.52).« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; « less
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
842976
Report Number(s):
LBNL-55924; CBP Note - 622
TRN: US0503788
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Conference
Resource Relation:
Conference: 2003 Particle Accelerator Conference, Portland, May 12-16, 2003
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; CLOUDS; DESIGN; ELECTRONS; INSTABILITY; LUMINOSITY; PHYSICS; RESONANCE; STANFORD LINEAR ACCELERATOR CENTER

Citation Formats

Seeman, J., Browne, M., Cai, Y., Colocho, W., Decker, F.-J., Donald, M., Ecklund, S., Erickson, R., Fisher, A., Fox, J., Heifets, S., Iverson, R., Kozanecki, W., Krejcik, P., Kulikov, A., Novokhatski, A., Schuh, P., Schwarz, H., Stanek, M., Sullivan, M., Teytelman, D., Turner, J., Wienands, U., Yan, Y., Yocky, J., Biagini, M., and Zisman, M.. Progress of the PEP-II-B-factory. United States: N. p., 2003. Web.
Seeman, J., Browne, M., Cai, Y., Colocho, W., Decker, F.-J., Donald, M., Ecklund, S., Erickson, R., Fisher, A., Fox, J., Heifets, S., Iverson, R., Kozanecki, W., Krejcik, P., Kulikov, A., Novokhatski, A., Schuh, P., Schwarz, H., Stanek, M., Sullivan, M., Teytelman, D., Turner, J., Wienands, U., Yan, Y., Yocky, J., Biagini, M., & Zisman, M.. Progress of the PEP-II-B-factory. United States.
Seeman, J., Browne, M., Cai, Y., Colocho, W., Decker, F.-J., Donald, M., Ecklund, S., Erickson, R., Fisher, A., Fox, J., Heifets, S., Iverson, R., Kozanecki, W., Krejcik, P., Kulikov, A., Novokhatski, A., Schuh, P., Schwarz, H., Stanek, M., Sullivan, M., Teytelman, D., Turner, J., Wienands, U., Yan, Y., Yocky, J., Biagini, M., and Zisman, M.. Sun . "Progress of the PEP-II-B-factory". United States. https://www.osti.gov/servlets/purl/842976.
@article{osti_842976,
title = {Progress of the PEP-II-B-factory},
author = {Seeman, J. and Browne, M. and Cai, Y. and Colocho, W. and Decker, F.-J. and Donald, M. and Ecklund, S. and Erickson, R. and Fisher, A. and Fox, J. and Heifets, S. and Iverson, R. and Kozanecki, W. and Krejcik, P. and Kulikov, A. and Novokhatski, A. and Schuh, P. and Schwarz, H. and Stanek, M. and Sullivan, M. and Teytelman, D. and Turner, J. and Wienands, U. and Yan, Y. and Yocky, J. and Biagini, M. and Zisman, M.},
abstractNote = {PEP-II is an e{sup +}e{sup -} B-Factory Collider located at SLAC operating at the Upsilon 4S resonance. PEP-II has delivered, over the past five years, an integrated luminosity to the BaBar detector of over 139 fb{sup -1} and has reached a luminosity of 6.58 x 10{sup 36}/cm{sup 2}/s. Steady progress is being made in reaching higher luminosity. The goal over the next several years is to reach a luminosity of at least 2 x 10{sup 34}/cm{sup 2}/s. The accelerator physics issues being addressed in PEP-II to reach this goal include the electron cloud instability, beam-beam effects, parasitic beam-beam effects, high RF beam loading, shorter bunches, lower beta y*, interaction region operation, and coupling control. A view of the PEP-II tunnel is shown in Figure 1. The present parameters of the PEP-II B-Factory are shown in Table 1 compared to the design. The present peak luminosity is 219% of design and the best integrated luminosity per month is 7.4 fb{sup -1} that is 225% of design. The best luminosity per month is shown in Figure 2. The integrated luminosity over a month is shown in Figure 3 and the total integrated luminosity in shown in Figure 4. The progress in luminosity has come from correcting the orbits, adding specific orbit bumps to correct coupling and dispersion issues, lowering the beta y* in the LER, and moving the fractional horizontal tunes in both rings to just above the half integer (<0.52).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jun 01 00:00:00 EDT 2003},
month = {Sun Jun 01 00:00:00 EDT 2003}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: