CERN Accelerating science

ATLAS Note
Report number	ATL-INDET-PROC-2014-016
Title	Firmware development and testing of the ATLAS Pixel Detector / IBL ROD card
Author(s)	Gabrielli, Alessandro (INFN, Bologna ; Bologna U.) ; Backhaus, Malte (CERN) ; Balbi, Gabriele (INFN, Bologna ; Bologna U.) ; Bindi, Marcello (Gottingen U.) ; Chen, Shaw-pin (Washington U.) ; Falchieri, Davide (INFN, Bologna ; Bologna U.) ; Flick, Tobias (Wuppertal U.) ; Hauck, Scott Alan (Washington U.) ; Hsu, Shih-Chieh (Washington U.) ; Kretz, Moritz (Heidelberg U.) ; Kugel, Andreas (Heidelberg U.) ; Lama, Luca (INFN, Bologna ; Bologna U.) ; Travaglini, Riccardo (INFN, Bologna ; Bologna U.) ; Wensing, Marius (Wuppertal U.) ; ATLAS Pixel Collaboration (INFN, Bologna ; Bologna U.)
Corporate Author(s)	The ATLAS collaboration
Publication	2015
Imprint	13 Nov 2014
Number of pages	7
In:	JINST 10 (2015) C03037
In:	7th International Workshop on Semiconductor Pixel Detectors for Particles and Imaging, Niagara Falls, Ontario, Canada, 1 - 5 Sep 2014, pp.C03037
DOI	10.1088/1748-0221/10/03/C03037
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	Detector Control System ; Digital Electronic circuits ; Front-end electronics for detector readout ; Software architectures
Abstract	The ATLAS Experiment is reworking and upgrading systems during the current LHC shut down. In particular, the Pixel detector has inserted an additional inner layer called Insertable B-Layer (IBL). The Readout-Driver card (ROD), the Back-of-Crate card (BOC), and the S-Link together form the essential frontend data path of the IBL’s off-detector DAQ system. The strategy for IBL ROD firmware development was three-fold: keeping as much of the Pixel ROD datapath firmware logic as possible, employing a complete new scheme of steering and calibration firmware and designing the overall system to prepare for a future unified code version integrating IBL and Pixel layers. Essential features such as data formatting, frontend-specific error handling, and calibration are added to the ROD data path. An IBL DAQ testbench using realistic frontend chip model was created to serve as an initial framework for full offline electronic system simulation. In this document, major firmware achievements concerning the IBL ROD data path implementation, tested in testbench and on ROD prototypes, will be reported. Recent Pixel collaboration efforts focus on finalizing hardware and firmware tests for IBL. Time plan is to approach a final IBL DAQ phase by the end of 2014.
Copyright/License	Preprint: (License: CC-BY-4.0)

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