First results from the Belle II experiment

The Belle II international collaboration has published its first results in a paper selected as an Editors’ Suggestion in Physical Review Letters The paper reports the first search for a new type of elementary particle that may act as a “portal” between ordinary matter and dark matter, which is understood to make up some 85% of the matter in the universe.

This search has been the thesis work of Laura Zani, who recently joined the CPPM group.

Contact: Justine Serrano

More information:

Event simulation, Belle II and Virginia Tech Department of Physics credit
Event simulation, Belle II and Virginia Tech Department of Physics credit

Dernière modification: Apr 16, 2020, 11:29:16 AM

Production of the ITkPixV1 chip for the ATLAS pixel detector at the HL-LHC

On March 17 2020, the ITkPixV1 chip was submitted to the TSMC foundry for production. With a surface area of more than 4 cm², this chip has been designed in the 65 nm CMOS process and will tolerate an ionizing dose of more than 500 Mrad. It contains more than 1/2 billion transistors and 153,600 pixels of 50x50 µm² organized in 2,400 regions of 8x8 pixels. This is the culmination of nearly 8 years of work by CERN's RD53 collaboration, to which the CPPM's ATLAS team has been a major contributor since its foundation. This is the pre-production version of the chip which will equip, in more than 33,000 units, the 5 internal pixel layers of the future ATLAS post-2026 trajectograph. This is a major step towards improving the ATLAS detector for the High Luminosity phase of CERN's Large Hadron Collider, which has now been completed.

More information about RD53 Collaboration

Detail of the ITkPixV1 chip submitted for production to the TSMC foundry on 17 March 2020 (bottom left corner), CPPM, Mohsine Menouni Credit
Detail of the ITkPixV1 chip submitted for production to the TSMC foundry on 17 March 2020 (bottom left corner), CPPM, Mohsine Menouni Credit

Dernière modification: Apr 2, 2020, 10:21:13 AM

A new step for the French KM3NeT project

The CPPM's KM3NeT team has completed the construction of the second junction box, one of the main components for the KM3NeT project. It will be deployed coming soon, at a depth of 2500 meters, 40 kilometers off the coast of Toulon.

More information on the CPPM website

More information on the KM3NeT website

Junction box
Junction box

Dernière modification: Mar 20, 2020, 3:28:17 PM