Title: Spin tracking of polarized protons in the Main Injector at Fermilab,
Abstract: The Main Injector (MI) at Fermilab currently produces high-intensity beams of
protons at energies of 120 GeV for a variety of physics experiments.
Acceleration of polarized protons in the MI would provide opportunities for a
rich spin physics program at Fermilab. To achieve polarized proton beams in the
Fermilab accelerator complex, detailed spin tracking simulations with realistic
parameters based on the existing facility are required. This report presents
studies at the MI using a single 4-twist Siberian snake to determine the
depolarizing spin resonances for the relevant synchrotrons. Results will be
presented first for a perfect MI lattice, followed by a lattice that includes
the real MI imperfections, such as the measured magnet field errors and
quadrupole misalignments. The tolerances of each of these factors in
maintaining polarization in the Main Injector will be discussed.