Abstract
The ATLAS detector has been designed for operation at CERN's Large Hadron Collider. ATLAS includes a complex system of liquid argoncalorimeters. The electronics for amplifying, shaping, sampling, pipelining,and digitizing the calorimeter signals is implemented on the Front End Boards (FEBs). This paper describes the design, implementation and production of the FEBs and presents measurement results from testing performed at several stages during the production process.
Highlights
ATLAS [1] is a large general-purpose detector designed for operation at the Large Hadron Collider (LHC) at CERN
The electronic readout of the ATLAS liquid argon (LAr) calorimeters is divided into a Front End (FE) system of boards mounted in custom crates directly on the cryostat feedthroughs, and a Back End (BE) system of VME-based boards located in an off-detector underground counting house
Instead of the plug-in preamp hybrids used for the rest of the LAr subsystems, the hadronic endcap (HEC) Front End Boards (FEBs) are equipped with plug-in “HEC preshapers” [16] that are designed to be pin-to-pin compatible with the preamp
Summary
ATLAS [1] is a large general-purpose detector designed for operation at the Large Hadron Collider (LHC) at CERN. The LAr calorimeters include the electromagnetic barrel (EMB) calorimeter, which is housed in the central cryostat and provides coverage for pseudorapidities |η| < 1.5. The ranges of larger pseudorapidity are covered by endcap calorimeter (EC) systems, housed in separate endcap cryostats. The electronic readout of the ATLAS LAr calorimeters is divided into a Front End (FE) system of boards mounted in custom crates directly on the cryostat feedthroughs, and a Back End (BE) system of VME-based boards located in an off-detector underground counting house. The FE system includes Front End Boards (FEB), which perform the readout and digitization of the calorimeter. The overall system performance of the ATLAS LAr readout electronics will be documented in a subsequent publication
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