A 350 GHz SIS Imaging Module for the JCMT Heterodyne Array Receiver Programme (HARP)
نویسندگان
چکیده
The HARP (Heterodyne Array Receiver Programme) B-band camera will incorporate a focal-plane array of 16, 850 micron (325-375 GHz), SIS heterodyne detectors. This receiver has been commissioned for use on the James Clerk Maxwell Telescope in Hawaii. The complete instrument will o er greatly improved spectroscopic mapping speeds (>x10) of extended objects complementing existing continuum bolometer detectors and planned millimetre-wave aperture synthesis telescopes. We describe key features of the imaging module, and present some early modelling and experimental work. In particular, we describe the LO injection meander line, the constant slot-depth corrugated horns (including 15 GHz scale models), the radial-probe mixers, and various items of work relating to tolerance assessment and uniformity.
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