Document Type
Honors Thesis
Abstract
The High Luminosity upgrade of the Large Hadron Collider (HL-LHC) places increased thermal and operational demands on detector electronics, requiring highly reliable power systems. The ATLAS Tile Hadronic Calorimeter (TileCal) uses low-voltage power supply (LVPS) bricks to power front-end electronics, but these units operate in inaccessible regions, making failures difficult to repair. Therefore, rigorous qualification procedures are essential. This work focuses on improving LVPS reliability through a structured burn-in process. Each unit undergoes pre-burn-in electrical verification using a Single Test Stand (STS), followed by sustained operation under load and elevated temperature, and post-burn-in requalification. Standard cooling conditions limit temperatures to 40–55 °C, below the required burn-in threshold. To address this, thermal interface materials with varying thermal conductivities were introduced to increase thermal resistance and achieve temperatures above 68 °C. Controlled thermal resistance enabled consistent burn-in conditions and effective identification of performance instability. This approach supports more consistent reliability screening for large-scale LVPS qualification for HL-LHC deployment.
Disciplines
Engineering Physics | Power and Energy
Publication Date
Spring 5-7-2026
Language
English
Faculty Mentor of Honors Project
Haleh Hadavand
License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Jones, Justice A., "TESTING AND QUALIFICATION OF LOW-VOLTAGE POWER SUPPLIES FOR THE ATLAS TILE HADRONIC CALORIMETER PHASE-II UPGRADE" (2026). 2026 Spring Honors Capstones Projects. 5.
https://mavmatrix.uta.edu/honors_spring2026/5