The CMS collaboration is building a new inner tracking pixel detector for the High-Luminosity LHC. Each pixel chip will be controlled with a single serial input stream at 160 Mbps and will send out data via four CML 1.28 Gbps outputs. The modules will be connected with up to 1.6 m long low-mass electrical links to the low power gigabit transceivers (lpGBT) and versatile transceivers (VTRx+)...
Custom silicon photonics intensity modulators for data readout in particle detectors will be presented together with preliminary experimental results. A variety of devices has been designed to explore the technological requirements to achieve data rate up to 25 Gb/s while sustaining extremely high dose levels (1 Grad total ionizing dose). Packaging constraints have been carefully considered to...
The Phase-2 CMS Level-1 Trigger and associated upstream systems consist of more than 20,000 25Gb/s optical links, transferring almost a Pb/s synchronously between different back-end processing nodes. The stable operation of these links is essential to avoid the injection of an erroneous signals into the trigger path, potentially leading to a flood of false triggers.
The Hermes protocol,...
Abstract
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...
The Versatile Link Plus Demonstrator Board (VLDB+) is a board designed by CERN’s EP-ESE group to provide an evaluation kit for the new Versatile Link ecosystem (VL+). This reference design gathers three custom and radiation hard devices, namely, the Low-Power Gigabit Transceiver (lpGBT), the Versatile Link Plus Transceiver (VTRx+) and the FEASTMP DCDCs. These components are common to some of...
