The MINOS Light Injection Calibration System
P. Adamson, J. Alner, B. Anderson, T. Chase, P. J. Dervan, T. Durkin,, E. Falk, P. G. Harris, D. G. Michael, R. Morse, R. Nichol, R. Saakyan, C., Smith, P. N. Smith, J. Thomas, R. Webb, R. F. White
TL;DR
The paper describes a light-injection calibration system for the MINOS neutrino experiment, using pulsed LEDs and photodiodes to precisely monitor and calibrate photomultiplier tube gains.
Contribution
It introduces a novel LED-based calibration system capable of detecting PMT gain non-linearities and drifts with 1% accuracy.
Findings
Achieved 1% level monitoring of PMT gain drifts.
Successfully measured non-linearities in PMT gain curves.
Enhanced calibration precision for neutrino detection.
Abstract
A description is given of the light-injection calibration system that has been developed for the MINOS long-baseline neutrino oscillation experiment. The system is based upon pulsed blue LEDs monitored by PIN photodiodes. It is designed to measure non-linearities in the PMT gain curves, as well as monitoring any drifts in PMT gain, at the 1% level.
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