  The Proton Improvement Plan-II (PIP-II) is a major upgrade to the Fermilab
accelerator complex, featuring a new 800-MeV Superconducting Radio-Frequency
(SRF) linear accelerator (LINAC) powering the accelerator complex to provide
the world's most intense high-energy neutrino beam. This paper describes the
conversion of the PIP-II Injector Test Facility (PIP2IT) cryogenic system into
a test stand for PIP-II High-Beta 650 MHz (HB650) cryomodules at Fermilab's
Cryomodule Test Facility (CMTF). A description of the associated mechanical,
electrical, and controls modifications necessary for testing HB650 cryomodules
are provided. The cooldown and warmup requirements, procedures and associated
controls logic is described.
