  The development of magnetic cogging is part of the Fermilab Booster upgrade
within the Proton Improvement Plan (PIP). The Booster is going to send 2.25E17
protons/hour which is almost double the present flux, 1.4E17 protons/hour to
the Main Injector (MI) and Recycler (RR). The extraction kicker gap has to
synchronize to the MI and RR injection bucket in order to avoid a beam loss at
the rising edge of the extraction and injection kickers. Magnetic cogging is
able to control the revolution frequency and the position of the gap using the
magnetic field from dipole correctors while radial position feedback keeps the
beam at the central orbit. The new cogging is expected to reduce beam loss due
to the orbit changes and reduce beam energy loss when the gap is created. The
progress of the magnetic cogging system development is going to be discussed in
this paper.

Accelerator Physics