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Title: PEP-II: An asymmetric B factory. Conceptual design report

Technical Report ·
DOI:https://doi.org/10.2172/10112145· OSTI ID:10112145

In this report, the authors have described an updated conceptual design for the high-luminosity Asymmetric B Factory (PEP-II) to be built in the PEP tunnel culmination of more than four years of effort aimed at the design and construction of an asymmetric e{sub +}e{sub {minus}} collider capable of achieving a luminosity of L = 3 {times} 10{sup 33} cm{sup {minus}2} s{sup {minus}1}. All aspects of the conceptual design were scrutinized in March 1991 by a DOE technical review committee chaired by Dr. L. Edward Temple. The design was deemed feasible and capable of achieving its physics goals. Furthermore, the cost estimate, schedule, and management plan for the project were fully endorsed by the committee. This updated conceptual design report captures the technical progress since the March 1991 review and reflects the lower cost estimate corresponding to the improved design. Although the PEP-II design has continued to evolve, no technical scope changes have been made that invalidate the conclusion of the DOE review. The configuration adopted utilizes two storage rings, an electron ring operating at 9 GeV and a positron ring at 3.1 GeV, each with a circumference of 2200 m. The high-energy ring is an upgrade of the PEP storage ring at SLAC; all PEP magnets and most power supplies will be reused. The upgrade consists primarily of replacing the PEP vacuum chamber and RF system with newly designed versions optimized for the high-current environment of PEP-II. The low-energy ring will be newly constructed and will be situated atop the high-energy ring in the PEP tunnel. Utilities already installed in the PEP tunnel are largely sufficient to operate the two PEP-II storage rings.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); California Institute of Technology (CalTech), Pasadena, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); California Univ., Berkeley, CA (United States). Intercampus Inst. for Research
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
AC03-76SF00098; AC03-76SF00515; AC03-81ER40050; W-7405-ENG-48; AS03-76ER70285
OSTI ID:
10112145
Report Number(s):
LBL-PUB-5379; SLAC-418; CALT-68-1869; UCRL-ID-114055; ON: DE94004812; IN: UC-IIRPA--93-01; BR: 35KA02000/35KS01000; 35HK02010/35KA02000; TRN: 94:002213
Resource Relation:
Other Information: PBD: Jun 1993
Country of Publication:
United States
Language:
English