Multi Anode Photomultiplier Tube Reliability Assessment for the JEM-EUSO Space Mission

TL;DR

This paper evaluates the reliability of the photomultiplier tubes used in the JEM-EUSO space telescope, focusing on degradation and radiation effects, and confirms their high performance with over 99% reliability.

Contribution

It presents a comprehensive reliability assessment of JEM-EUSO PMTs using the 217 Plus method, highlighting radiation as the main failure contributor and confirming acceptable damage levels.

Findings

Reliability of PMTs exceeds 99%

Radiation SET is the primary failure source

Damage levels are within acceptable limits

Abstract

Reliability assessment in concerned with the analysis of devices and systems whose individual components are prone to fail. This reliability analysis documents the process and results of reliability determination of the JEM-EUSO photomultiplier tube component using the methods 217 Plus. Quantum efficiency degradation and radiation hardness assurance. In conclussion, the levels of damage suffered by the PMTs which comprise the focal surface of JEM-EUSO Space Telescope, are acceptable. The results show as well the greatest contribution to the failure is due to radiation SET. The guaranteed performance of this equipment is a 99.45 per cent, an accepted value of reliability thus fulfilling the objectives and technological challenges of JEM-EUSO.