TES Bolometer Design and Testing for the Tomographic Ionized-Carbon Mapping Experiment Millimeter Array
Abstract
Transition Edge Sensor (TES) bolometers are a well-established technology with a strong track record in experimental cosmology, making them ideal for current and future radio astronomy instruments. The Tomographic Ionized-carbon Mapping Experiment (TIME), in collaboration with JPL, has developed advanced silicon-nitride leg-isolated superconducting titanium detectors for 200-300 GHz observations of the Epoch of Reionization. TIME aims to fabricate a total of 1920 high-frequency (HF) and low-frequency (LF) detectors to fully populate the focal plane. TIME has successfully developed HF ($\sim 230-325$GHz) and LF ($\sim 183-230$GHz) wafers that are physically robust and perform well at cryogenic temperatures ($\sim$300 mK). Recent laboratory tests have shown high optical efficiencies for the LF wafers (30-40%), but low device yield for the HFs. To address this, new HF modules have been designed with improved cabling and a reduced backshort distance, and are expected to perform similarly to LFs in a similar lab setting. We report on the development of these detectors as well as recent laboratory and on-sky tests conducted at the Arizona Radio Observatory's (ARO) 12-meter prototype antenna at Kitt Peak National Observatory.
Fields of Study & Subjects
Superconducting and THz Device Technology
Radio Astronomy Observations and Technology
Astrophysics and Star Formation Studies
Publication details
- Journal / source
- IEEE Transactions on Applied Superconductivity
- Volume
- 36
- Issue
- 6
- Pages
- 2103507–2103507
- Publication date
- 18 May 2026
- Language
- EN