Quantum materials research at the upgraded CHESS-U facility: Introducing <QM²

The recent CHESS-U project comprised a significant upgrade of the Cornell High Energy Synchrotron Source. CHESS-U enables running with a single, lowered-emittance 6 GeV positron beam in CESR, and has also funded the construction of 6 new hard x-ray undulator beamlines. One of these is the <QM>² beamline, dedicated to high-precision studies of quantum materials in reciprocal space. In this talk, I will (i) introduce the <QM>² beamline; (ii) identify the scientific questions that motivated its construction; (iii) explain the design decisions that enable its function; and (iv) highlight the unique new capabilities that it offers to users in the quantum materials community.