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. Each array is housed in a custom designed structure manufactured from high purity copper and then gold plated. In addition to the detector array assembly, the array package also encloses cryogenic readout electronics. We present the full mechanical design of the AdvACT high frequency (HF) detector array package along with a detailed look at the detector array stack assemblies. This experiment will also make use of extensive hardware and software previously developed for ACT, which will be modified to incorporate the new AdvACT instruments. Therefore, we discuss the integration of all AdvACT arrays with pre-existing ACTPol infrastructure.
@article{arxiv.1607.05754,
title = {Mechanical design and development of TES bolometer detector arrays for the Advanced ACTPol experiment},
author = {Jonathan T. Ward and Jason Austermann and James A. Beall and Steve K. Choi and Kevin T. Crowley and Mark J. Devlin and Shannon M. Duff and Patricio M. Gallardo and Shawn W. Henderson and Shuay-Pwu Patty Ho and Gene Hilton and Johannes Hubmayr and Niloufar Khavari and Jeffrey Klein and Brian J. Koopman and Dale Li and Jeffrey McMahon and Grace Mumby and Federico Nati and Michael D. Niemack and Lyman A. Page and Maria Salatino and Alessandro Schillaci and Benjamin L. Schmitt and Sara M. Simon and Suzanne T. Staggs and Robert Thornton and Joel N. Ullom and Eve M. Vavagiakis and Edward J. Wollack},
journal= {arXiv preprint arXiv:1607.05754},
year = {2017}
}