6–10 Jul 2026
University of the Western Cape
Africa/Johannesburg timezone
**Tours now open!** Registration is now closed - All registration payments are due before 23:39 SAST on 26 June.

Finger Low Voltage Power Supply Upgrade for the ATLAS Tile Calorimeter in South Africa

9 Jul 2026, 11:20
20m
Lecture Hall GH3 (University of the Western Cape)

Lecture Hall GH3

University of the Western Cape

Oral Presentation Track B - Nuclear, Particle and Radiation Physics Nuclear, Particle and Radiation Physics -2

Speaker

Lungisani Phakathi (University of Witwatersrand)

Description

The Phase-II upgrade of the ATLAS Tile Calorimeter (TileCal) for the High-Luminosity Large Hadron Collider will also comprise the new finger Low Voltage Power Supply (fLVPS) boards to satisfy the new requirements on radiation tolerance, reliability and performance of the device. University of Witwatersrand in South Africa share the production of 2048 fLVPS boards with UTA in America. University of Witwatersrand produced 1032 of these fLVPS boards. The fLVPS board is upgraded to supply stable and low-noise power and improved redundancy and fault tolerance for high energy performance in any harsh environment. Sourcing, assembling, and verification of components is done using a methodical way which complies with ATLAS standards. All quality assurance is managed in three steps: initial testing, burn-in and final testing. The production pipeline, testing protocols and performance metrics for the fLVPS boards are presented in this work. The outcomes shows that these systems meet all aspects of the necessary parameters regarding voltage stability, temperature stability, power efficiency, noise level and reliability. The work also demonstrates the contribution of Wits to providing hardware to conduct a large international experiment and the experience they gained from building in electronics production and testing.

Apply for student award at which level: PhD
Consent on use of personal information: Abstract Submission Yes, I ACCEPT

Author

Lungisani Phakathi (University of Witwatersrand)

Co-authors

Bruce Mellado (University of the Witwatersrand and iThemba LABS) Donald Ngobeni Edward Nkadimeng (NRF-iThemba LABS) Kutlwano Makgetha (University of the Witwatersrand) Njokweni Mbuyiswa (University of the Witwatersrand) Ryan Mckenzie (University of the Witwatersrand) Mr Sanele Scelo Gumede (University of Witwatersrand) Thabo Pilusa (University of the Witwatersrand) Thapelo Gerry Leboho (University of Witwatersrand) Vongani Chabalala (University of Witwatersrand) Vuyolwethu Happyboy Kakancu (University of the Witwatersrand)

Presentation materials