  The Scanning Quantum Cryogenic Atom Microscope (SQCRAMscope) is a quantum
sensor in which a quasi-1D quantum gas images electromagnetic fields emitted
from a nearby sample. We report improvements to the microscope. Cryogen usage
is reduced by replacing the liquid cryostat with a closed-cycle system and
modified cold finger, and cryogenic cooling is enhanced by adding a radiation
shield. The minimum accessible sample temperature is reduced from 35 K to 5.8 K
while maintaining low sample vibrations. A new sample mount is easier to
exchange, and quantum gas preparation is streamlined.
