Abstract
The Tile Calorimeter (TileCal) is the central hadronic calorimeter of the ATLAS experiment at the Large Hadron Collider (LHC). In 2026, the LHC will be upgraded to the High Luminosity LHC (HL-LHC) allowing it to deliver up to 7 times the nominal instantaneous design luminosity. The Phase-II TileCal Upgrade will accommodate the detector and data acquisition system to the HL-LHC requirements. The on- and off-detector electronics will be completely redesigned using a new readout architecture with a full-digital trigger system. The upgraded on-detector electronics will transfer digitized data for every bunch crossing (∼25 ns) to the Tile PreProcessor system in the counting rooms, requiring a total data bandwidth of 40 Tbps. The TilePPr will store the detector data in pipeline memories to meet the new ATLAS Trigger and Data Acquisition architecture requirements, and will interface with the FELIX system and the first level trigger system.
Highlights
The Tile Calorimeter (TileCal) [1] is the hadronic calorimeter of the ATLAS experiment [2] at the Large Hadron Collider (LHC) at CERN
Intelligent Platform Management Controller (IPMC): The IMPC has been designed at CERN using a Very Low Profile DDR3-DIMM form factor and it is equipped with an Microsemi A2F200 FPGA which implements the IPMI functionalities
In order to continue studying the performance of the upgraded electronics, the Demonstrator module will be installed into ATLAS during the Long Shutdown 2 replacing one of the current TileCal modules of the Long Barrel A
Summary
The Tile Calorimeter (TileCal) [1] is the hadronic calorimeter of the ATLAS experiment [2] at the Large Hadron Collider (LHC) at CERN. Energy depositions by particles crossing the plastic scintillating tiles produce light which is conducted by wavelength shifting fibers to the on-detector electronics in the outermost part of the detector. Data is stored in pipeline memories until a first level trigger acceptance signal is received, upon which data from selected events is read out to the off-detector electronics. The PMT signals are grouped and transmitted to the ATLAS trigger system for trigger decision. In the back-end electronics, the main component is the ReadOut Driver (ROD) which performs preprocessing and gather the data coming from the front-end electronics at a maximum average trigger rate of 100 kHz. After performing the energy and time reconstruction for each channel, RODs transmit the processed data to the High Level Trigger system. TileCal comprises a total of 4672 readout cells, each equipped with two PhotoMultipliers (PMT) that receive light
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