New method to remove the electronic noise for absolutely calibrating low gain photomultiplier tubes with a higher precision

A new method to remove the electronic noise in order to absolutely calibrate low gain photomultiplier tubes with a higher precision is proposed and validated with experiments using a digitizer-based data acquisition system. This method utilizes the fall time difference between the electronic noise (...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2014-08, Vol.755, p.32-37
Main Authors: Zhang, Xiaodong, Hayward, Jason P., Laubach, Mitchell A.
Format: Article
Language:English
Subjects:
Accelerators
Assembly
Calibration
Digitizer
Electronics
Gain
Noise
Photomultiplier tube
Photomultiplier tubes
Radiators
Single photon calibration
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Summary:A new method to remove the electronic noise in order to absolutely calibrate low gain photomultiplier tubes with a higher precision is proposed and validated with experiments using a digitizer-based data acquisition system. This method utilizes the fall time difference between the electronic noise (about 0.5ns) and the real PMT signal (about 2.4ns for Hamamatsu H10570 PMT assembly). Using this technique along with a convolution algorithm, the electronic noise and the real signals are separated very well, even including the very small signals heavily influenced by the electronic noise. One application that this method allows is for us to explore the energy relationship for gamma sensing in Cherenkov radiators while maintaining the fastest possible timing performance and high dynamic range.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2014.04.018