A 350-μm array polarimeter using translational modulators

摘要: We describe a polarimeter that will be testbed for novel polarization modulator. This modulator is composed of two modified Martin-Puplett interferometers in which the input state transformed by adjusting phase delays between linear orthogonal polarizations each stages. type of modulator represents potential improvement over existing technology following three ways. First, these modulators can fully characterize measuring Stokes Q, U, and V. The characterization V especially useful as diagnostic systematic errors. Second, easily retuned to observe at multiple frequencies. Finally, small translations required modulation accomplished with fewer moving parts than rotational motions wave plate modulators, thus potentially leading longer lifetimes those currently employed polarimeters. next generation polarimeters, designed both study Galactic magnetic fields far-infrared submillimeter measurement polarized component Cosmic Microwave Background, need incorporate attributes. This prototype version Hertz had until recently been operating on Caltech Submillimeter Observatory. After modification, moved Heinrich Telescope Arizona. utilize dynamic scheduling efficiently during best fraction weather this site.