Abstract
DESHIMA 2.0 will be a wideband submillimeter (submm) spectrometer based on integrated NbTiN superconducting resonant filters and Microwave Kinetic Inductance Detectors. DESHIMA 2.0 covers an instantaneous frequency band from 220 to 440 GHz with a frequency resolution of F/dF = 500 to carry out spectroscopic redshift measurements of submm-bright galaxies (SMGs). For the absolute frequency calibration of DESHIMA 2.0, we have developed a gas-cell calibration system that can be used with methanol vapor or N2O gas. The system is designed not only for the frequency calibration, but also for long integration time tests that simulate observations of faint extra-galactic lines.
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