Mechanical design and development of TES bolometer detector arrays for the Advanced ACTPol experiment

Understand

The next generation Advanced ACTPol (AdvACT) experiment is currently underway and will consist of four Transition Edge Sensor (TES) bolometer arrays, with three operating together, totaling ~5800 detectors on the sky.

• Building on experience gained with the ACTPol detector arrays, AdvACT will utilize various new technologies, including 150mm detector wafers equipped with multichroic pixels, allowing for a more densely packed focal plane.
• Each set of detectors includes a feedhorn array of stacked silicon wafers which form a spline profile leading to each pixel.
• This is then followed by a waveguide interface plate, detector wafer, back short cavity plate, and backshort cap.