Abstract
After a series of upgrades, the High Luminosity LHC (HL-LHC) will have an instantaneous luminosity of 5-7 times larger than the LHC design value. The readout electronics of the ATLAS Tile Calorimeter (TileCal) will undergo a substantial upgrade during the Phase-II upgrade to accommodate the HL-LHC requirements. After the Phase-II upgrade, the TileCal detector signals will be digitized by on-detector electronics and transferred to the the TileCal PreProcessors (TilePPr), which is a part of the off-detector electronics. In the TilePPr, the digitized data will be stored in pipeline buffers and be packed and readout to the Front-End Link eXchange (FELIX) system upon receiving a trigger decision. At the same time, the energy information will be reconstructed from the detector data and transferred to the Level-1 Calorimeter Trigger (L1Calo) system in different granularity for every bunch crossing. The TileCal Demonstrator is designed to evaluate the performance of the TileCal with new readout electronics without compromising the present data taking. This contribution describes in detail the data processing and the hardware, firmware, software components of the TileCal Demonstrator system, together with the results of beam tests performed at CERN.
Highlights
The Tile Calorimeter (TileCal) [1] is the hadronic calorimeter covering the central region of the ATLAS detector [2] at the LHC
The TileCal PreProcessors (TilePPr) demonstrator and the TDAQ interface (TDAQi) demonstrator comply with Advanced Telecommunications Computing Architecture (ATCA) standard [10], which has been selected as the hardware platform for the Phase-II upgrade of ATLAS by the Electronics groups at CERN [11]
The TilePPr demonstrator is a double mid-size Advanced Mezzanine Card (AMC), each one is able to process the data from one Tile Super Drawer; the TDAQi demonstrator is designed as an ATCA Rear Transition Module (RTM), which sends the selected event data to Read Out Driver (ROD) and Front-End Link eXchange (FELIX)
Summary
The Tile Calorimeter (TileCal) [1] is the hadronic calorimeter covering the central region of the ATLAS detector [2] at the LHC. In order to evaluate the new readout architecture and the technology choices of the implementation, the TileCal Demonstrator is designed with new readout electronics while preserving compatibility with the current system and is planned to be inserted into the ATLAS detector for verification during the second LHC Long Shutdown in 2019 after extensive standalone tests. This contribution summarizes the data processing and the hardware, firmware, software components of the TileCal Demonstrator project, together with the result of beam tests performed at CERN
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