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The High Level Trigger (HLT) of the ALICE experiment requires massive parallel computing. One of the main tasks of the HLT system is two-dimensional cluster finding on raw data of the Time Projection Chamber (TPC), which is the main data…

Instrumentation and Detectors · Physics 2007-05-23 G. Grastveit , H. Helstrup , V. Lindenstruth , C. Loizides , D. Roehrich , B. Skaali , T. Steinbeck , R. Stock , H. Tilsner , K. Ullaland , A. Vestbo , T. Vik

ALICE is the CERN LHC experiment optimised for the study of the strongly interacting matter produced in heavy-ion collisions and devoted to the characterisation of the quark-gluon plasma. To achieve the physics program for LHC Run 3, a…

Instrumentation and Detectors · Physics 2020-12-04 Domenico Colella

The integration of a Verticle Cavity Surface-Emitting Laser (VCSEL) array and a driving Application-Specific Integrated Circuit (ASIC) in a custom optical array transmitter module (ATx) for operation in the detector front-end is…

The LHC will undergo a major upgrade starting in 2025 towards the High Luminosity LHC (HL-LHC) to increase the instantaneous luminosity by a factor of 5 to 7 compared to the nominal value. The Phase-II Upgrade (2025-2027) will require the…

Instrumentation and Detectors · Physics 2020-11-06 Fernando Carrió Argos

The High Level Trigger (HLT) system of the ALICE experiment is an online event filter and trigger system designed for input bandwidths of up to 25 GB/s at event rates of up to 1 kHz. The system is designed as a scalable PC cluster,…

Asynchronous Byzantine Fault Tolerant (BFT) consensus protocols have garnered significant attention with the rise of blockchain technology. A typical asynchronous protocol is designed by executing sequential instances of the Asynchronous…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-04-18 Xiaohai Dai , Chaozheng Ding , Wei Li , Jiang Xiao , Bolin Zhang , Chen Yu , Albert Y. Zomaya , Hai Jin

In the ALICE read-out and trigger system, the present GBT and CRU based solution will also serve for Run4 without major modifications. By now, the GBT protocol has been superseded by lpGBT. Extensions of the ALICE system (e.g. the planned…

Instrumentation and Detectors · Physics 2024-03-19 E. David , T. Kiss

The functions of the Low-Level Radio Frequency (LLRF) system at European Spallation Source (ESS) are implemented on different Field-Programmable Gate Array (FPGA) boards in a Micro Telecommunications Computing Architecture (MTCA) crate.…

Instrumentation and Detectors · Physics 2018-03-28 C. Amstutz , M. Donna , A. J. Johansson , M. Mohammednezhad

Artificial neural networks are already widely used for physics analysis, but there are only few applications within low-level hardware triggers, and typically only with small networks. Modern high-end FPGAs offer Tera-scale arithmetic…

Instrumentation and Detectors · Physics 2020-01-29 N. Nottbeck , C. Schmitt , V. Büscher

This paper presents GraphAGILE, a domain-specific FPGA-based overlay accelerator for graph neural network (GNN) inference. GraphAGILE consists of (1) \emph{a novel unified architecture design} with an \emph{instruction set}, and (2) \emph{a…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-04-25 Bingyi Zhang , Hanqing Zeng , Viktor Prasanna

The FEB(front end board) configuration test board is developed aiming at meeting the requirement of testing the new generation ASIC(application-specific integrated circuit) chips and its configuration system for ATLAS NSW(New Small Wheel)…

Instrumentation and Detectors · Physics 2019-09-04 Houbing Lu , Feng Li , Peng Miao , Kun Hu , Zhilei Zhang , Rongqi Sun , Qingli Ma , Ge Jin

The Compressed Baryonic Matter (CBM) experiment is a part of the Facility for Antiproton and Ion Research (FAIR) in Darmstadt at the GSI. The CBM experiment will investigate the highly compressed nuclear matter using nucleus-nucleus…

Hardware Architecture · Computer Science 2016-01-20 Suman Sau , Swagata Mandal , Jogender Saini , Amlan Chakrabarti , Subhasis Chattopadhyay

A front-end readout electronics system has been developed for silicon strip detectors. The system uses an application specific integrated circuit (ASIC) ATHED to realize multi-channel E&T measurement. The slow control of ASIC chips is…

Instrumentation and Detectors · Physics 2011-06-13 Yi Qian , Hong Su , Jie Kong , Cheng-Fu Dong , Xiao-Li Ma , Xiao-Gang Li

This paper evaluates the radiation tolerance of commercial off-the-shelf (COTS) electronics components for use in the Thin Gap Chamber (TGC) frontend electronics of the ATLAS experiment at the High-Luminosity LHC (HL-LHC). The ATLAS…

A compact radiation-tolerant array optical transmitter module (ATx) is developed to provide data transmission up to 10Gbps per channel with 12 parallel channels for collider detector applications. The ATx integrates a Vertical Cavity…

Machine learning (ML) is increasingly used in network data planes for advanced traffic analysis, but existing solutions (such as FlowLens, N3IC, BoS) still struggle to simultaneously achieve low latency, high throughput, and high accuracy.…

Networking and Internet Architecture · Computer Science 2025-10-15 Xiangyu Gao , Tong Li , Yinchao Zhang , Ziqiang Wang , Xiangsheng Zeng , Su Yao , Ke Xu

Large liquid argon Time Projection Chambers have been adopted for the DUNE experiment's far detector, which will be composed of four 17 kton detectors situated 1.5 km underground at the Sanford Underground Research Facility. This represents…

We ported the firmware of the ARTIQ experiment control infrastructure to an embedded system based on a commercial Xilinx Zynq-7000 system-on-chip. It contains high-performance hardwired CPU cores integrated with FPGA fabric. As with…

Instrumentation and Detectors · Physics 2021-12-01 Chun Kit Lam , Stephan Maka , David Nadlinger , Chris Ballance , Sébastien Bourdeauducq

The new electronics of the ATLAS Tile Calorimeter for the HL-LHC interfaces the on-detector and off-detector electronics by means of a Daughterboard. The Daughterboard is positioned on-detector featuring commercial SFPs+, CERN GBTx ASICs,…

In-time particle trajectory reconstruction in the Large Hadron Collider is challenging due to the high collision rate and numerous particle hits. Using GNN (Graph Neural Network) on FPGA has enabled superior accuracy with flexible…

Hardware Architecture · Computer Science 2023-06-28 Shi-Yu Huang , Yun-Chen Yang , Yu-Ru Su , Bo-Cheng Lai , Javier Duarte , Scott Hauck , Shih-Chieh Hsu , Jin-Xuan Hu , Mark S. Neubauer