PEP-II Status and Outlook

doi:https://doi.org/10.2172/1039187

Title: PEP-II Status and Outlook

Full Record
Other Related Research

Abstract

PEP-II/BABAR are presently in their second physics run. With machine and detector performance and reliability at an all-time high, almost 51 fb{sup -1} have been integrated by BABAR up to mid-October 2001. PEP-II luminosity has reached 4.4 x 10{sup 33} cm{sup -2} s{sup -1} and our highest monthly delivered luminosity has been above 6 pb{sup -1}, exceeding the performance parameters given in the PEP-II CDR by almost 50%. The increase compared to the first run in 2000 has been achieved by a combination of beam-current increase and beam-size decrease. In this paper we will summarize the PEP-II performance and the present limitations as well as our plans to further increase machine performance.

Authors:: Wienands, H U; Biagini, M E; Decker, F J; Donald, M H; Ecklund, S; Fisher, A; Holtzapple, R L; Iverson, R H; Krejcik, P; Kulikov, A V; Meyer, T; Nelson, J; Novokhatski, A; Reichel, I; Sullivan, M; Seeman, J T; Turner, J; Steier, C; Zisman, M S

Publication Date:: 2012-04-24

Research Org.:: SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1039187

Report Number(s):: SLAC-PUB-14963
TRN: US201209%%465

DOE Contract Number:: AC02-76SF00515

Resource Type:: Conference

Resource Relation:: Conference: 23rd Advanced ICFA Beam Dynamics Workshop on High Luminosity e+ e- Colliders, 15-19 Oct 2001. Ithaca, New York

Country of Publication:: United States

Language:: English

Subject:: 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; LUMINOSITY; PERFORMANCE; PHYSICS; RELIABILITY; Accelerators,ACCPHY

Citation Formats


                    Wienands, H U, Biagini, M E, Decker, F J, Donald, M H, Ecklund, S, Fisher, A, Holtzapple, R L, Iverson, R H, Krejcik, P, Kulikov, A V, Meyer, T, Nelson, J, Novokhatski, A, Reichel, I, Sullivan, M, Seeman, J T, Turner, J, /SLAC, Steier, C, Zisman, M S, and /LBL, Berkeley. PEP-II Status and Outlook.  United States: N. p., 2012. 
        Web.  doi:10.2172/1039187.

Copy to clipboard


                    Wienands, H U, Biagini, M E, Decker, F J, Donald, M H, Ecklund, S, Fisher, A, Holtzapple, R L, Iverson, R H, Krejcik, P, Kulikov, A V, Meyer, T, Nelson, J, Novokhatski, A, Reichel, I, Sullivan, M, Seeman, J T, Turner, J, /SLAC, Steier, C, Zisman, M S, & /LBL, Berkeley. PEP-II Status and Outlook.  United States.  https://doi.org/10.2172/1039187

Copy to clipboard


                    Wienands, H U, Biagini, M E, Decker, F J, Donald, M H, Ecklund, S, Fisher, A, Holtzapple, R L, Iverson, R H, Krejcik, P, Kulikov, A V, Meyer, T, Nelson, J, Novokhatski, A, Reichel, I, Sullivan, M, Seeman, J T, Turner, J, /SLAC, Steier, C, Zisman, M S, and /LBL, Berkeley. Tue .  
        "PEP-II Status and Outlook".  United States.  https://doi.org/10.2172/1039187.  https://www.osti.gov/servlets/purl/1039187.

Copy to clipboard


                    
@article{osti_1039187,

  title        = {PEP-II Status and Outlook},

  author       = {Wienands, H U and Biagini, M E and Decker, F J and Donald, M H and Ecklund, S and Fisher, A and Holtzapple, R L and Iverson, R H and Krejcik, P and Kulikov, A V and Meyer, T and Nelson, J and Novokhatski, A and Reichel, I and Sullivan, M and Seeman, J T and Turner, J and /SLAC and Steier, C and Zisman, M S and /LBL, Berkeley},

  abstractNote = {PEP-II/BABAR are presently in their second physics run. With machine and detector performance and reliability at an all-time high, almost 51 fb{sup -1} have been integrated by BABAR up to mid-October 2001. PEP-II luminosity has reached 4.4 x 10{sup 33} cm{sup -2} s{sup -1} and our highest monthly delivered luminosity has been above 6 pb{sup -1}, exceeding the performance parameters given in the PEP-II CDR by almost 50%. The increase compared to the first run in 2000 has been achieved by a combination of beam-current increase and beam-size decrease. In this paper we will summarize the PEP-II performance and the present limitations as well as our plans to further increase machine performance.},

  doi          = {10.2172/1039187},

  url          = {https://www.osti.gov/biblio/1039187},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2012},

  month        = {4}

}

Copy to clipboard

Conference:

View Conference

https://doi.org/10.2172/1039187

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:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Status Report and Future Plans for the PEP-II B Factory

Technical Report Fisher, Alan S

The PEP-II B Factory at SLAC has been in operation with the BABAR detector since the summer of 1999. The peak currents and luminosity steadily increased through the end of the 2000 run on October 31. By that time, 0.75 A of electrons (the design current) routinely collided with 1.4 A of positrons in 657 bunches, to give a peak luminosity of 2.6 x 10{sup 33} cm{sup -2} s{sup -1}. We delivered an integrated luminosity of up to 184 pb{sup -1} per day and 1033 per week; BABAR logged a total of 25 fb{sup -1}. Three days of machine developmentmore »« less
https://doi.org/10.2172/784907

Full Text Available
Status Report on PEP-II Performance

Technical Report Matter, Regina S

PEP-II [1-9] is an e{sup +}e{sup -} collider with asymmetric energies (3.1 and 9 GeV, respectively) in a 2200 m tunnel at the Stanford Linear Accelerator Center. The collider produces B mesons to study a particle physics effect called CP violation as well as other physics topics. PEP-II was completed in 1998 with the first luminosity generated in July of that year. The installation of the BaBar Detector was finished in May 1999. The overall layout of PEP-II is shown in Figure 1 and the interaction region of PEP-II in Figure 2. The accelerator parameters and achievements of the Highmore »« less
https://doi.org/10.2172/799909

Full Text Available
PEP-II Status and Future Plans

Technical Report Seeman, John T

The PEP-II B-Factory at SLAC has reached a luminosity of 4.6 x 10{sup 33}/cm{sup 2}/s and has delivered 94 fb{sup -1} of data to the BaBar physics detector by the end of May 2002. PEP-II has delivered over 309 pb{sup -1} in 24 hours and over 6.35 fb{sup -1} in one month. The accelerator physics issues for these performance levels include electron cloud, beam-beam effects, parasitic beam-beam collisions, and RF beam loading. Upgrades to PEP-II are underway to increase the luminosity to 2 to 4 x 10{sup 34}/cm{sup 2}/s by FY2007. The accelerator physics effects that must be dealt withmore »« less
https://doi.org/10.2172/799977

Full Text Available
Status and Future Plans of the PEP-II B-Factory

Technical Report Seeman, John T

The PEP-II e+e- collider [1,2,3,4] has been operating for two years with the BaBar detector at the energy of the Upsilon 4S resonance. The peak luminosity has reached 3.3 x 10{sup 33}/cm{sup 2}/s with 693 bunches with a positron current of 1.5 A and an electron current of 0.8 A. PEP-II has delivered in excess of 38 fb{sup -1} of data to BaBar. The beam-beam tune shift limits are approaching 0.05-0.07 horizontally and 0.03-0.05 vertically [5]. The electron cloud instability ECI enlarges the positron beam size at high currents but is reduced by a solenoidal field on the vacuum chambersmore »« less
https://doi.org/10.2172/800069

Full Text Available
PEP-II Hardware Reliability

Technical Report Allen, C W

Hardware reliability takes on special importance in large accelerator facilities intended to work as factories; i.e., when they are expected to deliver design performance for extended periods of time. The PEP-II B-Factory at SLAC is such a facility. In this paper, we summarize PEP-II reliability statistics from the first four years of production running. The four running periods extended from January 12 through October 31, 2000, from February 4, 2001 through June 30, 2002, from November 15, 2002 through June 30, 2003, and from September 9, 2003 through July 31, 2004. These four periods are designated Runs 1, 2, 3,more »« less
https://doi.org/10.2172/839818

Full Text Available

Similar Records