Spectrometers serve as indispensable analytical tools across chemistry,materials science,environmental monitoring,medical diagnostics,and beyond.The emergence of reconstructive spectrometers represents a transformativ...Spectrometers serve as indispensable analytical tools across chemistry,materials science,environmental monitoring,medical diagnostics,and beyond.The emergence of reconstructive spectrometers represents a transformative leap in spectral analysis,combining miniaturized encoding hardware with advanced computational algorithms to revolutionize conventional approaches.These devices encode unknown spectral data into measurable signals,for which sophisticated algorithms then decode to reconstruct the original spectrum with high fidelity—all achieved within an ultra-compact footprint.In this review,we first establish the mathematical foundations governing spectral encoding and decoding.We then provide a detailed analysis of encoding strategy and state-of-the-art decoding techniques,followed by recent breakthroughs in hardware design for optimized spectral reconstruction systems.Finally,we address key challenges and future opportunities,offering insights into how reconstructive spectrometers may redefine spectroscopy beyond traditional laboratory settings.展开更多
The Medium Energy X-ray telescope(ME) is one of the three main telescopes on board the Insight hard X-ray modulation telescope(Insight-HXMT) astronomy satellite. ME contains 1728 pixels of Si-PIN detectors sensitive i...The Medium Energy X-ray telescope(ME) is one of the three main telescopes on board the Insight hard X-ray modulation telescope(Insight-HXMT) astronomy satellite. ME contains 1728 pixels of Si-PIN detectors sensitive in 5-30 ke V with a total geometrical area of 952 cm^2. The application specific integrated circuit(ASIC) chip, VA32TA6, is used to achieve low power consumption and low readout noise. The collimators define three kinds of field of views(FOVs) for the telescope, 1°×4°, 4°×4°,and blocked ones. Combination of such FOVs can be used to estimate the in-orbit X-ray and particle background components.The energy resolution of ME is ~3 ke V at 17.8 ke V(FWHM) and the time resolution is 255 μs. In this paper, we introduce the design and performance of ME.展开更多
基金funded by Scientific Research Innovation Capability Support Project for Young Faculty(ZYGXQNJSKYCXNLZCXM-E8)National Research Foundation of Korea(NRF)(RS-2024-00463154)Industrial Strategic Technology Development Program(RS-2024-00431676).
文摘Spectrometers serve as indispensable analytical tools across chemistry,materials science,environmental monitoring,medical diagnostics,and beyond.The emergence of reconstructive spectrometers represents a transformative leap in spectral analysis,combining miniaturized encoding hardware with advanced computational algorithms to revolutionize conventional approaches.These devices encode unknown spectral data into measurable signals,for which sophisticated algorithms then decode to reconstruct the original spectrum with high fidelity—all achieved within an ultra-compact footprint.In this review,we first establish the mathematical foundations governing spectral encoding and decoding.We then provide a detailed analysis of encoding strategy and state-of-the-art decoding techniques,followed by recent breakthroughs in hardware design for optimized spectral reconstruction systems.Finally,we address key challenges and future opportunities,offering insights into how reconstructive spectrometers may redefine spectroscopy beyond traditional laboratory settings.
基金the Strategic Priority Research Program on Space Science,the Chinese Academy of Sciences(Grant No.XDA040102).
文摘The Medium Energy X-ray telescope(ME) is one of the three main telescopes on board the Insight hard X-ray modulation telescope(Insight-HXMT) astronomy satellite. ME contains 1728 pixels of Si-PIN detectors sensitive in 5-30 ke V with a total geometrical area of 952 cm^2. The application specific integrated circuit(ASIC) chip, VA32TA6, is used to achieve low power consumption and low readout noise. The collimators define three kinds of field of views(FOVs) for the telescope, 1°×4°, 4°×4°,and blocked ones. Combination of such FOVs can be used to estimate the in-orbit X-ray and particle background components.The energy resolution of ME is ~3 ke V at 17.8 ke V(FWHM) and the time resolution is 255 μs. In this paper, we introduce the design and performance of ME.
