TUPM2X01
FRIB, East Lansing, Michigan, USA
BNL, Upton, Long Island, New York, USA
MSU, East Lansing, Michigan, USA
ANL, Argonne, Illinois, USA
The Facility for Rare Isotope Beams being built at Michigan State University includes a high intensity superconducting radio frequency heavy ion linac. This driver linac will accelerate ions up to uranium to energies above 200 MeV/u at 400 kW beam power. The design includes a charge stripper at energies between 16 and 20 MeV/u. The estimated power deposition in a conventional carbon foil stripper would require power densities of the order of 30 MW/cm3. We are developing two types of charge strippers with self-replenishing fluids, a liquid (lithium) and a gas (helium) version. We present in this talk a description of the R&D, the expected pros and cons of each method, and the status of the construction of both systems.
THAM7X01
BNL, Upton, Long Island, New York, USA
ESRF, Grenoble, France
In recent years the proton and ion beam intensity (as well as the current density) at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory improved considerably. Thanks to an upgrade of the polarized proton source we plan to increase the proton intensity to 3.0·1011 per bunch. In order to accommodate the amplified beam-beam effect originating from proton beams with this unprecedented intensity, a beam-beam compensation scheme with a new lattice and two electron lenses (e-lenses) was installed, commissioned and began operation during the 2015 polarized 100 GeV proton Run.