Diana Alessandra Carla Costantina Scannicchio

Biography

Diana Alessandra Carla Costantina Scannicchio, Ph.D., is a Project Scientist at the University of California, Irvine, and has served as Coordinator of the ATLAS TDAQ System Administration group at CERN since January 2016. She oversees the management of the online computing farm for the ATLAS experiment, which includes approximately 4,000 nodes and executes around 90,000 service checks. Her responsibilities encompass daily operations, long-term planning, system upgrades, computing security, and the training and mentoring of new team members. She has led the migration of critical infrastructure components, including the transition from OpenLDAP to 389ds in 2023, the migration of all nodes to AlmaLinux 9 in 2025, and the development of a new monitoring system based on Prometheus and Grafana that replaced Ganglia in 2026.

Scannicchio has been a member of the System-On-Chip Organizing Committee, contributing to the organization of multiple workshops held at CERN between 2019 and 2025. She has also been involved in hardware selection and the installation, commissioning, and configuration of new servers, including the deployment of hundreds of chassis containing multiple nodes. Her work has included the development of automation tools to reduce manual processes and human error, such as a RunDeck-based system presented at CHEP 2018, and the redesign of web services architecture using HAProxy, presented at CHEP 2019.

Prior to her coordination role, Scannicchio held various positions at UC Irvine and CERN, including a CERN Senior Fellowship from 2008 to 2010. Her earlier work focused on the integration of muon event selection algorithms into the ATLAS TDAQ system and the deployment and maintenance of the Access Manager component. She also contributed to the construction and testing of MDT chambers for the ATLAS Muon Spectrometer and participated in the analysis following the 2008 LHC machine incident. Scannicchio received a Ph.D. in Physics from the University of Pavia in 2001, where her research centered on the ATLAS Trigger and Data Acquisition system and the development of Event Filter prototypes.

Education

• Ph.D. in Physics, University of Pavia, 2001
• Degree in Physics, University of Pavia, 1997