Conveners
Session 11: 3D Sensors
- Gian Franco Dalla Betta (Universita degli Studi di Trento è INFN (IT))
3D pixel sensors will be used for the innermost layer (L0) of the ATLAS ITk detector at High Luminosity LHC. The pixel size will be either 25 µm x 100 µm (barrel, central part of L0) or 50 µm x 50 µm (endcap, lateral rings). Sensor wafers with 150 µm active thickness have been produced by FBK in collaboration with INFN. Several sensors were bump bonded to RD53A read-out chips at Leonardo and...
The High Luminosity upgrade of the CERN Large Hadron Collider (HL-LHC) will require new high-radiation tolerant silicon pixel sensors for the innermost layers of the CMS experiment tracking detectors, capable of withstanding fluences up to 2.3E16 neq/cm2 (1MeV equivalent neutrons). Results obtained in beam test experiments with FBK planar and 3D pixel sensors interconnected with the RD53A...
The inner detector of the ATLAS experiment will be replaced by a completely new Inner Tracker (ITk) to exploit the performance of the High Luminosity upgrade of the LHC accelerator (HL-LHC). The new tracker will have to operate in an unprecedented radiation environment. In particular, the hybrid pixel detectors of the innermost layer of the ITk will need to survive a particle fluence of about...
We report on the measurements of time resolution for double-sided 3D pixel sensors with a single cell of 50 $\mu$m $\times$ 50 $\mu$m and thickness of 285 $\mu$m, fabricated at IMB-CNM and irradiated with reactor neutrons to 8e14 MeV n$_{eq}$/cm$^2$ and then to 2.3e15 MeV n$_{eq}$/cm$^2$. Measurements were conducted using a radioactive source at a temperature of -20 and 20 \textdegree C in a...
In order to cope with the high luminosity phase conditions at the LHC experiments, the development of detectors with enhanced time resolution and radiation hardness is required. TimeSPOT, an INFN-funded project, has developed 3D-trench silicon pixel sensors able to achieve a very good time resolution for minimum ionizing particles. In 2019, these sensors were tested for the first time on a...
For the operations during the High Luminosity phase of LHC, dedicated studies have shown that new vertex detectors with single-hit time resolutions in the range from 10 to 50 picoseconds will allow to recover the current tracking and vertexing capabilities. The TimeSPOT project has developed 3D trench-based silicon pixel sensors with a time resolution in the range of 20 ps. To carefully study...
