SPT-SLIM: A Line Intensity Mapping Pathfinder for the South Pole Telescope

Understand

The South Pole Telescope Summertime Line Intensity Mapper (SPT-SLIM) is a pathfinder experiment that will demonstrate the use of on-chip filter-bank spectrometers for mm-wave line intensity mapping (LIM).

• The SPT-SLIM focal plane consists of 18 dual-polarization R=300 filter-bank spectrometers covering 120-180 GHz, coupled to aluminum kinetic inductance detectors.
• A compact cryostat holds the detectors at 100 mK and performs observations without removing the SPT-3G receiver.
• SPT-SLIM will be deployed to the 10-m South Pole Telescope for observations during the 2023-24 austral summer.