Tau-Charm factory vacuum chamber design

The present article gives a description of the vacuum chamber required for a high luminosity electron e(+)-e(-) collider Tau-Charm factory. The beam l ifetime, which is limited by the single particle collisions with molecules of the residual gas, is estimated. The synchrotron radiation gas loading is studied for the Tau-Charm factory vacuum chamber. The effect of various cl eaning procedures on the outgassing behavior of samples of the chamber wall is studied. It is shown that a cleaning procedure by a suitable NaOH etchi ng gives the best results of the tested techniques for minimizing of contam inations and outgassing rates. (C) 1999 American Vacuum Society. [S0734-210 1(99)03506-X].