Speaker
Description
Abstract
The upgrade of the ATLAS hadronic Tile-calorimeter (TileCal) Low Voltage Power Supply
(LVPS) is a part of the preparation for the High-luminosity LHC project. This talk serves
to provide a detailed overview of the development of a Burn-in test station for an
upgraded LVPS component known as a Brick. These Bricks are radiation hard
transformer-coupled buck converters that function to step-down bulk 200 V Direct
Current (DC) power to the 10 V DC required by the on-detector electronics. To ensure
the high reliability of the Bricks, once installed within the TileCal, a burn-in test station
has been designed and built. The burn-in station functions to implement a burn-in
procedure on eight Bricks simultaneously. This procedure subjects the Bricks to suboptimal operating conditions that function to accelerate their ageing as well as to
stimulate failure mechanisms. This results in elements of the Brick that would fail
prematurely within TileCal failing within the burn-in station or to experience
performance degradation that can be detected by follow-up testing effectively screening
out the non-performative sub-population. The burn-in station is of a fully custom design
in both its hardware and software. The development of the test station will be explored
in detail, the preliminary burn-in procedure to be employed will be provided, the
preliminary and final commissioning of the test station will be presented culminating in
an outlook of the project
