Abstract
The Tile Calorimeter (TileCal) is the hadronie calorimeter covering the central region of the ATLAS experiment at the Large Hadron Collider (LHC). The upgraded High Luminosity LHC will deliver five times the current nominal instantaneous luminosity. The ATLAS Phase II upgrade will upgrade the readout electronics of the TileCal for the HL-LHC. The majority of the front- and back-end electronics will be redesigned with a new readout strategy. In the upgraded readout architecture for Phase II, the frontend electronics consist of the Front-End Boards, Main Boards and the Daughter Boards. The Main Board digitizes the analog signals coming from the Front-End Boards (FEBs) connected to the PhotoMultiplier Tubes (PMTs), provides integrated data for minimum bias monitoring and includes electronics for PMT calibration. Three different FEB options with different signal acquisition strategies are under study: new 3-in-1 cards, QIE chip and FATALIC chip. The Daughter Board receives and distributes Detector Control System commands, clock and timing commands to the rest of the elements of the front-end electronics, as well as collects and transmits the digitized data to the backend electronics at the LHC frequency (∼25 ns). In the back-end electronics, the TileCal PreProcessor (TilePPr) receives and stores the digitized data from the Daughter Boards in pipeline memories to cope with the latencies and rates specified in the new ATLAS DAQ architecture. The TilePPr interfaces between the data acquisition, trigger and control systems and the front-end electronics. In addition, the TilePPr distributes the clock and timing commands to the frontend electronics for synchronization with the LHC clock.
Highlights
In the upgraded read out architecture for Phase II, the frontend electronics consist of the Front-End Boards, MainBoards and the DaughterBoards
The MainBoard digitizes the analog signals coming from the Front-End Boards (FEBs) connected to the PhotoMultiplier Tubes (PMTs), provides integrated data for minimum bias monitoring and includes electronics for PMT
The Demonstrator module comprises on a single frame, the front-end upgraded electronics needed for the digitization 162 of signals coming from the PMTs, the calibration circuitry and high speed data communication with the back-end electronics, and the electronics needed for the distribution and monitoring of high voltage to the PMTs
Summary
F.Carrió, on behalf of the ATLAS Tile Calorimeter System detector using steel plates as absorber and plastic scintillator tiles as active material; it covers the central part of the ATLAS experiment. This detector is divided into four sections along the beam direction, each of which is segmented azimuthally into 64 modules (Figure 1a). (PMTs) and the front-end electronics are located in mechanical structures called “drawers”, placed in the outermost part of the modules (Figure 1b). The complete readout of the TileCal cells comprises a total of 9852 PMTs. F.
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