Four ionization profile monitors (IPMs) in RHIC
measure vertical and horizontal beam profiles in the two
rings (yellow and blue). These work by measuring the
distribution of electrons produced by beam ionization of
residual gas. In 2007 a prototype of a new design was
nstalled in the yellow ring. During the 2007-2008 run it
proved to be almost completely free from backgrounds
from rf coupling, electron clouds and x-rays from
upstream beam loss. In 2009 four new IPMs were built
based on the prototype. During the 2009 shutdown two of
hese IPMs were installed. This paper describes the new
IPMs and shows data from the 2010 beam run. The new
IPMs have been extremely important in the
commissioning of the RHIC stochastic cooling system.