Our group at UC Berkeley has produced the next generation of millimeterwave spiderweb-absorber transition edge sensor (TES) bolometer technology, which was originally developed for the Atacama Pathfinder Experiment-Sunyaev Zel'dolvich (APEX-SZ) and South Pole Telescope (SPT) experiments. We will discuss the adaptation of this technology to a balloon-borne environment and to submillimeter wavelengths for the E and B Experiment (EBEX) and the Atacama Submillimeter Telescope Experiment (ASTE). Specifically, this proceedings will address the methods we used to increase the thermal contact between the TES and a heat capacity used to limit electrothermal bandwidth, increase the optical efficiency at sub-millimeter wavelengths by reducing the grid spacing of the spiderweb absorber, and reduce the saturation power of the bolometers by a factor of 4 compared to the lowest saturation power SPT bolometers by the altering the bolometer geometry.
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Acknowledgements We would like to everyone for their hard work at all of the numerous institutions involved in research on APEX-SZ, SPT, EBEX, and ASTE. These experiments have been funded by the National Science Foundation under grants AST-0138348 (APEX-SZ), AST-0709497 (APEX-SZ), ANT-0638937 (SPT), ANT0130612 (SPT), and PHY-0114422 (SPT), the National Aeronautics and Space Administration under grants NNX08AG40G (EBEX) and NNX 07AP36H (EBEX), the Canadian Space Agency, Natural Sciences and Engineering Research Council, Canadian Institute for Advanced Research, Canadian Foundation for Innovation and Canada Research Chairs program, and the Nobeyama Radio Observatory, a branch of the National Astronomical Observatory of Japan.