Abstract
This work summarizes the status of the on-detector and off-detector electronics developments for the Phase 2 Upgrade of the ATLAS Tile Calorimeter at the LHC scheduled around 2022. A demonstrator prototype for a slice of the calorimeter including most of the new electronics is planned to be installed in ATLAS in the middle of 2014 during the first Long Shutdown. For the on-detector readout, three different front-end boards (FEB) alternatives are being studied: a new version of the 3-in-1 card, the QIE chip and a dedicated ASIC called FATALIC. The Main Board will provide communication and control to the FEBs and the Daughter Board will transmit the digitized data to the off-detector electronics in the counting room, where the super Read-Out Driver (sROD) will perform processing tasks on them and will be the interface to the trigger levels 0, 1 and 2.
Highlights
ATLAS (A Toroidal LHC AparatuS) [1] is one of the four general purpose proton–proton detectors for the Large Hadron Collider (LHC) at CERN
In order to improve the reliability according to the increase of radiation into the detector, the new readout system will include redundant optical fibers between onand off-electronics, redundant low voltage power supplies, higher radiation tolerant components and the use of highly reliable data protocols for transmission, such as the GigaBit Transceiver protocol (GBT) [5]
During the Long Shutdown 1 (LS1) scheduled for 2013-14, the on-detector electronics of a complete superdrawer will be replaced by a prototype of the upgraded electronics as a part of the Demonstrator project
Summary
ATLAS (A Toroidal LHC AparatuS) [1] is one of the four general purpose proton–proton detectors for the Large Hadron Collider (LHC) at CERN. The Hadronic Tile Calorimeter (TileCal) [2] detector is one of the several subsystems composing the ATLAS experiment. The TileCal is a sampling calorimeter made out of steel plates and plastic scintillator tiles which covers the central region of ATLAS. This detector is divided in three cylindrical parts: a central long barrel and two extended barrels. The particles crossing the plastic scintillating tiles deposit energy and some light is generated and conducted by wavelength shifting fibers to the on-detector electronics which are located in the outermost part of the modules, called drawers.
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