KEYWORDS: Temperature metrology, Pyrometry, Calibration, Black bodies, Photodiodes, Diamond, Telescopes, Signal processing, Short wave infrared radiation
We have developed a time-resolved two-dimensional temperature monitoring system using shortwave infrared (SWIR) detection scheme for a nanocrystalline diamond foil under intense hydrogen ion beams with 1.4 MW average power at 1.0 GeV energy in harsh radiation environment. The optical system composed of a light collecting reflective telescope, dichroic and bandpass filters, SWIR and visible CMOS cameras combined with PIN photodiodes and image sampling pinhole mirrors. It receives thermal radiation located at 40 m from the measurement location. The optical design, optical calibration of the system with high temperature blackbody source, measurement results based on two-dimensional temperature mapping and uncertainties will be presented.
An off-axis Schmidt telescope based remote imaging system is under development for in-situ viewing of high-energy proton beam distribution at the Spallation Neutron Source. The optical architecture, design parameters and challenges of this design will be discussed.
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