Seminar Details

Superconducting Cavity Cryomodule Development at ANL: Future Plans and Current Examples

Zach Conway, Argonne National Laboratory (ANL)
Monday, February 11, 10:00 AM - Special FRIB Seminar
NSCL Lecture Hall

The Argonne National Laboratory Physics Division is in the final stages of a major upgrade to the Argonne Tandem Linear Accelerator System (ATLAS) national user facility, referred to as the intensity upgrade. The intensity upgrade project will substantially increase beam currents for experimenters working with the existing ATLAS stable and in-flight rare isotope beams and for the neutron-rich beams from the Californium Rare Isotope Breeder Upgrade. This project includes the replacement of three existing cryomodules, containing 18 superconducting (SC) accelerator cavities and 9 SC solenoids, with a single cryomodule with seven SC 72.75 MHz accelerator cavities optimized for ion velocities of 7.7% the speed of light and 4 SC solenoids all operating at 4.5 K. This presentation will start with a review of our cryomodule design and implementation status for the intensity upgrade and conclude with a review of our in-progress future designs. These future designs are being pursued for other low-velocity accelerator applications, e.g., FNAL Project-X (2 K) and the Soreq-NRC SARAF (4 K) projects. Topics will include: how we minimized the heat load into the 4 K and 80 K coolant streams feeding the cryomodule, a comparison of the calculated and measured static heat loads, the mechanical design of the vacuum vessel including thermal and magnetic shields, and the structural supports used to align the superconducting cavities and solenoids at 4.5 K to 0.25 mm transversely.