ATLAS Upgrade Pixel Detector Contribution: Material Budget Analysis
Supervisor Name
Ahmed Bassalat
Supervisor Email
ahmed.bassalat@najah.edu
University
An-Najah National University
Research field
Physics
Bio
Dr. Ahmed Bassalat is an assistant professor in the Physics department and the team leader of the ATLAS-CERN group at An-Najah National University. He performed his doctoral at CERN and got his PhD in Particle Physics from Paris Saclay University in 2016. Dr. Bassalat is carrying out joint research between An-Najah University and Paris Saclay University. He founded the Centre of Excellence in High Energy Physics in Palestine (CEHEP2) sponsored by CERN. He initiated the Winter School in High Energy Physics in Palestine (WISHEPP) in collaboration with the IJCLab and CERN and has chaired it since 2016. He managed a few European mobility projects with a budget exceeding 500 KEuro. Dr. Bassalat leads many actions to get involved the Palestinian universities in High energy Physics via a close collaboration with many European institutions and universities, Sorbonne University, CERN, IJCLab, Paris Saclay University and ICTP. He is supervising several graduate students.
ATLAS Upgrade Pixel Detector Contribution: Material Budget Analysis In the high-luminosity era of the Large Hadron Collider, the instantaneous luminosity is expected to reach unprecedented values, resulting in up to 200 proton-proton interactions in a typical bunch crossing. To cope with the resulting increase in occupancy, bandwidth and radiation damage, the ATLAS Inner Detector will be replaced by an all-silicon system, the Inner Tracker (ITk). The innermost part of the ITk will consist of a pixel detector, with an active area of about 13 m2 . To deal with the changing requirements in terms of radiation hardness, power dissipation and production yield, several silicon sensor technologies will be employed in the five barrel and endcap layers. As a timeline, it is facing to pre-production of components, sensor, building modules, mechanical structures and services. The pixel modules assembled with RD53B readout chips have been built to evaluate their production rate. Irradiation campaigns were done to evaluate their thermal and electrical performance before and after irradiation. A new powering scheme – serial – will be employed in the ITk pixel detector, helping to reduce the material budget of the detector as well as power dissipation. This project presents the status of the ITk-pixel project focusing on the Material budget study, a key parameter that determines the Pixel detector efficiency. The student will perform a numerical analysis for the material budget calculation
