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Performance and Aging of the BABAR Drift Chamber
2004
Abstract
The BaBar Drift Chamber is a cylindrical, small-cell drift chamber installed at the PEP-II B-Factory. It has been operating since May 1999, integrating nearly 175 fb{sup -1} luminosity in e{sup +}e{sup -} collisions at {radical}s {approx} 10.6 GeV. The chamber has accumulated a dose of 12.8 mC/cm, resulting in a drop in gain of approximately 6.4%. The drift chamber has met most of its design goals (position, momentum, and dE/dx resolution) while maintaining extremely high efficiency for charged track reconstruction. The chamber's operational history and performance will be presented, along with a discussion of the effects of aging and extrapolations for future performance, through 2008.
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