Development and verification of an innovative photomultiplier calibration system with a 10-fold increase in photometer resolution |
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| Authors: | Shyh-Biau Jiang Tse-Liang Yeh Li-Wu Chen Jann-Yenq Liu Ming-Hsuan Yu Yu-Qin Huang Chen-Kiang Chiang Chung-Jen Chou |
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| Institution: | 1. Institute of Mechanical Engineering, National Central University, Taoyuan City 32001, Taiwan;2. Institute of Opto-Mechatronics Engineering, National Central University, Taoyuan City 32001, Taiwan;3. Institute of Space Science, National Central University, Taoyuan City 32001, Taiwan |
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| Abstract: | In this study, we construct a photomultiplier calibration system. This calibration system can help scientists measuring and establishing the characteristic curve of the photon count versus light intensity. The system uses an innovative 10-fold optical attenuator to enable an optical power meter to calibrate photomultiplier tubes which have the resolution being much greater than that of the optical power meter. A simulation is firstly conducted to validate the feasibility of the system, and then the system construction, including optical design, circuit design, and software algorithm, is realized. The simulation generally agrees with measurement data of the constructed system, which are further used to establish the characteristic curve of the photon count versus light intensity. |
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| Keywords: | Photomultiplier calibration Airglow Optical attenuator |
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