Validation of high voltage power supplies for the 1-inch photomultipliers of AugerPrime, the Pierre Auger Observatory upgrade

TL;DR

This paper details the validation process and successful testing of new high voltage power supplies for photomultiplier tubes in the AugerPrime upgrade, ensuring reliability in harsh environmental conditions.

Contribution

It introduces a validation procedure and testing facility for high voltage power supplies used in the Pierre Auger Observatory upgrade.

Findings

HVPS modules passed reliability tests in extreme conditions

Validation procedure ensures operational stability of power supplies

Testing facility supports quality assurance for observatory components

Abstract

In the framework of the upgrade of the Pierre Auger Observatory, a new high voltage module is being employed for the power supply of the 1-inch photomultiplier added to each water-Cherenkov detector of the surface array with the aim of increasing the dynamic range of the measurements. This module is located in a dedicated box near the electronics and comprises a low consumption DC-DC converter hosted inside an aluminum box. All the modules have undergone specific tests to verify their reliability in the extreme environmental conditions of the Argentinian pampa. In this paper, we describe the validation procedure and the facility developed to this aim. The successful results of the tests on the HVPS modules are presented and discussed.