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U.S. Department of Energy
Office of Scientific and Technical Information

ISABELLE: a 200 + 200 GeV colliding beam facility

Conference ·
OSTI ID:7211937
Plans are under way for the construction of a pair of intersecting storage rings providing for colliding beams of protons of energy at least 200 GeV. The rings (circumference 2.62 km) will contain superconducting magnets constructed with braided Nb--Ti filamentary wire, with a peak field of 4.0 T corresponding to an energy of 200 GeV. A current of 10 A of protons will be injected at 29 GeV from the existing AGS accelerator at Brookhaven, using the energy stacking technique similar to that employed at the CERN ISR; subsequently the stored beam will be accelerated gradually in the storage rings. Six intersection areas will be provided for experiments. They are designed to provide flexibility in beam characteristics for different experiments. The maximum luminosity at full energy is expected to be 1.0 x 10/sup 33/ cm/sup -2/s/sup -1/, at 29 GeV it will be approximately 10/sup 32/ cm/sup -2/s/sup -1/. Recent work with prototype magnets indicates that fields of 5.0 T can be produced. This has led to an alternative design of somewhat larger rings (circumference 3.77 km) that should be capable of providing colliding beams at 400 + 400 GeV.
Research Organization:
Brookhaven National Lab., Upton, N.Y. (USA); State Univ. of New York, Stony Brook (USA)
DOE Contract Number:
EY-76-C-02-0016
OSTI ID:
7211937
Report Number(s):
BNL-22930; CONF-770709-8
Country of Publication:
United States
Language:
English