Arrays of antenna-coupled bolometers using transition edge sensors

✍ Scribed by Myers, Michael J.; Holzapfel, William; Lee, Adrian T.; O’Brient, Roger; Richards, P.L.; Schwan, D.; Smith, A.D.; Spieler, Helmuth; Tran, Huan

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 227 KB
• Volume: 520
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2003.11.351

✦ Synopsis

We are developing antenna-coupled transition edge sensor (TES) bolometer arrays for use in the measurement of the cosmic microwave background polarization. We have designed and built a prototype antenna-coupled bolometer pixel. This design uses a double slot dipole antenna on a silicon hemispherical lens, fed with superconducting niobium microstrip. Microstrip filters are used to define the frequency band of the optical response, which is centered at 217 GHz with 40% bandwidth. The microstrip is terminated into a load resistor on a silicon nitride suspension, adjacent to a TES which is used to measure the dissipated power.

We will discuss our progress in the development of the prototype pixel chips as well as the baseline design of a bolometer array for POLARBEAR, a CMB polarization experiment.