Time-varying sextupole corrections during the Tevatron ramp

The time behavior of the sextupole component of the Tevatron superconducting dipoles under ramping conditions was studied. Large time-dependent sextupole corrections are necessary to maintain constant chromaticities in the Tevatron. The authors discuss the implementation and results of these corrections in terms of emittance growth and intensity loss during the Tevatron ramp. >