  During Nova operations it is planned to run the Fermilab Recycler in a 12
batch slip stacking mode. In preparation for this, measurements of the tune
during a six batch injection and then as the beam is slipped by changing the RF
frequency, but without a 7th injection, have been carried out in the Main
Injector. The coherent tune shifts due to the changing beam intensity were
measured and compared well with the theoretically expected tune shift. The tune
shifts due to changing RF frequency, required for slip stacking, also compare
well with the linear theory, although some nonlinear affects are apparent at
large frequency changes. These results give us confidence that the expected
tunes shifts during 12 batch slip stacking Recycler operations can be
accommodated.
