Conveners
Production, Testing and Reliability
- Francois Vasey (CERN)
- Magnus Hansen (CERN)
Production, Testing and Reliability
- Magnus Hansen (CERN)
- Francois Vasey (CERN)
Production, Testing and Reliability
- Francois Vasey (CERN)
- Magnus Hansen (CERN)
The entire tracking system of the ATLAS experiment will be replaced during the LHC Phase II shutdown. A new silicon Inner Tracker (ITk) will contain five innermost pixel layers equipped with new sensors and readout electronics capable to improve the tracking performance, cope with the high particle multiplicity and work in a high luminosity environment. In order to standardize modules of the...
The ATLAS experiment is currently preparing for an upgrade of the inner tracking detector for High-Luminosity LHC. The new tracker, ITk, employs an all-silicon detector with outer Strip layers. The building block of the ITk Strip barrel is the stave which consists of a low-mass support structure hosting the common electrical, optical and cooling services as well as 28 silicon modules. In this...
A method of automating the visual inspection of ATLAS upgrade strip modules is shown. The visual inspection of the hybrids is a time consuming part of the quality control during module production. A method of detecting and classifying the SMD components on the hybrids using an object detection neural network was investigated. The results show that the amount of hybrids that needed to be check...
The high radiation dose and the cold environment at the HL-LHC pixel detector regions presents serious challenges for the survival of optical components. Radiation hard twinax cables are developed for the ATLAS ITk pixel data transmission within the pixel detector volume for up to 6m before transitioning to optical links at larger radius where radiation dose is reduced to acceptable level for...
The building blocks of the ATLAS Strip Tracker for HL-LHC are modules that host silicon sensors and front-end electronics. The modules are mounted on carbon-fibre substructures hosting up to 14 modules per side. An End-of-Substructure (EoS) card on each substructure side connects up to 28 differential data lines at 640 Mbit/s to lpGBT and VL+ ASICs that provide data serialisation and 10 GBit/s...
The upgrade of the ATLAS ITk strips detector for HL-LHC will employ a custom PCB (Powerboard) for on-module DC-DC conversion, HV switching, and monitoring. This contribution will present the production procedure and mass test system for 15,000 Powerboards. We will also present the challenges identified during prototyping and pre-production and the performance of the Powerboard with the latest...
As part of the CMS Tracker upgrade for High-Luminosity LHC, the Inner Tracker community is developing an automated test system for the qualification of the front-end chip (CROC) before the wafer is sent to the company for dicing and hybridization. The procedure takes approximately one day for each wafer to be tested, thus allowing to fully verify the functionalities of all the chips in the...
Fifty thousand hybrid circuits of five different types will be manufactured for the Phase-2 Upgrade of the CMS Outer Tracker. These circuits must undergo a strict quality control process, composed of functional testing and visual inspection, before they can be assembled into modules. The hybrids will be functionally tested first at the manufacturing sites. Afterwards, they will be visually...
