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His Excellency Mr Andrej Plenković, Prime Minister of the Republic of Croatia on Tuesday, 20 May 2025.
No full textTiming studies with the ME0 stack at the GIF++ irradiation facility
No full textA ME0 station of 6 layers of triple-GEM detectors will be built to instrument the very forward region of both CMS end-caps. In April 2024 the first complete 6-layer stack was assembled, and the goal of this analysis is to study the timing performance of the GEM chambers, both single and stacked, in a GIF++ test beam campaign in July 2024
2nd FPGA Developers' Forum (FDF) meeting
No full textAs modern digital systems demand increasingly higher data rates, the role of high-throughput, low-latency communication becomes critical in applications such as data acquisition, real-time processing, and high-performance computing. This talk describes how UDPIP and TCPIP hardware protocol stack IP cores can be designed to deliver deterministic, line-rate Ethernet communication in FPGA-based systems. We discuss the architectural design and implementation approaches that enable these cores to achieve high performance while maintaining efficient FPGA resource usage.
Through test results and integration examples, we demonstrate how IP cores such as these can be effectively deployed in complex system designs requiring scalable and reliable networking solutions. Practical aspects such as interoperability, configurability, and system-level integration are also addressed, providing attendees with actionable insights into leveraging hardware-accelerated networking for demanding, data-driven applications
High Throughput Data Transfer System for ALICE Experiment in Run 3
No full textThe European Organization for Nuclear Research (CERN), headquartered in Geneva, Switzerland, operates the Large Hadron Collider (LHC), the world’s most powerful particle accelerator. One of the four main LHC experiments is A Large Ion Collider Experiment (ALICE), which is dedicated to studying the properties of quark–gluon plasma, a state of matter that existed shortly after the Big Bang. To enhance its data collection capabilities, ALICE underwent a significant upgrade during the LHC’s Long Shutdown 2 (2019–2021). This upgrade focused on modernizing the experiment’s detector and data acquisition (DAQ) systems. The result is a vastly improved ability to capture and analyze data from heavy-ion collisions. This article provides an overview of the software and processes used to transfer and manage the experiment’s massive datasets and highlights the key achievements and insights gained since the upgraded system became operational
Test Results and Analysis of the MQYYM Magnet at 1.9 K in STAARQ, a New CEA Paris-Saclay Test Facility
No full textIn the initial framework of HL-LHC project, a 90 mm Nb-Ti single aperture quadrupole short model with a gradient of 120 T/m at 1.9 K, has been designed, manufactured and firstly tested at 4.2 K as part of a collaboration between CERN and CEA. This magnet called MQYYM has been recently tested for the first time at 1.9 K and used as a reference magnet for the commissioning of the new CEA Paris-Saclay cryogenic test facility STAARQ (standing for test station for quadrupole accelerator magnets). This test station has been developed to test superconducting magnets up to 5 m-long at 1.9 K in a 1 bara helium bath with a lambda plate. Magnets can be powered up to 13 kA thanks to hybrid HTS current leads. It relies on digital and analog MSS (Magnet Safety System) for quench detection as well as on several types of instrumentation, from voltage taps and temperature sensors to strain gauges. This paper describes and analyzes the test results of MQYYM at 4.6 K and 1.9 K as part of the facility commissioning, with a special focus on mechanical measurements and protection results. In particular, it will conclude on the protection heater validation, necessary for the upcoming MQYY tests
2nd FPGA Developers' Forum (FDF) meeting
No full textTrying to modulate the RF cavity of a Synchrotron Light Source by leveraging Reinforcement Learning, resulted in a hardware implementation of the Gated Recurrent Unit (GRU) on the Versal AI Engine, by AMD Xilinx and extremely efficient in performing the main numerical operations needed by the model.
RNNs have been designed to handle time series, and they are the perfect candidates to handle this kind of task. Although RNNs don't parallelize well, their ability to distill input and pass information into the hidden state, could be beneficial for real time control tasks.
I will firstly introduce the AI Engine and its features. Second, I will introduce the GRU cell. Then I will show how numerical operations are being implemented in the AI Engine and its memory limitations. Finally, I will discuss how we tackled the lack of built-in activation functions, since the tanh and sigmoid function implementations are needed
2nd FPGA Developers' Forum (FDF) meeting
No full textChisel4ml is a tool we developed for generating fast implementations of deeply quantized neural networks to FPGA devices. The tool is implemented in the Chisel Hardware Construction Language, and has a frontend in Python, to enable interfacing with neural network training libraries. We will present basics of the Chisel language and compare chisel4ml against hls4ml. In general, chisel4ml, is able to generate the hardware much faster then high-level synthesis solutions, because it uses structural descriptions of the circuits
Study of a Kinematic Fit algorithm for the channel at the ATLAS detector
No full textThe search for Higgs bosons pairs, produced at the LHC, is a fundamental step for the study and understanding of the Higgs field potential, responsible for the spontaneous breaking of the electro-weak symmetry. In fact, the observation of this rare phenomenon would allow us to have an estimate of the cubic term of the potential. However, due to the low number of expected events, many efforts are currently directed towards the development and optimisation of analysis algorithms aimed at increasing experimental sensitivity. This poster will show the implementation and some results of a very promising kinematic fit algorithm used in the decay channel of two Higgs bosons in photons and b-jets pairs, observed with the ATLAS detector. This tool is able to improve the resolution of the hadronic component of the decay thanks to the imposition of kinematic constraints on the individual events, which in turn improves our ability to reject the non-resonant background, allowing to determine more stringent confidence intervals on the tri-linear coupling
Generalized symmetries in particle physics
No full textIn this talk I review various notions of generalised global symmetry: higher-form, higher-group, and non-invertible symmetry. All these notions have had profound impact on quantum field theory research in the last decade. I highlight various applications of these new symmetries in particle physics, focussing on theories beyond the Standard Model. Areas touched upon include axions, gauge unification, dark matter, neutrino masses, and flavour hierarchies.In this talk we review various notions of generalised global symmetry: higher-form symmetry, higher-group symmetry, and non-invertible symmetry. All these notions have had profound impact on quantum field theory research in the last decade. We highlight various applications of these new symmetries in particle physics, focussing on theories beyond the Standard Model. Areas touched upon include axions, gauge unification, dark matter, neutrino masses, and flavour hierarchies
2nd FPGA Developers' Forum (FDF) meeting
No full textFunctional verification is a cornerstone of successful design, yet its complexity often poses significant challenges. In this presentation, we’ll explore some of the key verification methodologies, focusing on practical approaches that enhance efficiency and reliability. While the discussion will remain broad to resonate with a wide audience, specific topics such as testbench strategies, coverage metrics, and reuse will be examined in greater detail.
This session aims to spark conversation and share insights rather than providing all-encompassing solutions. Attendees will gain an understanding of fundamental practices, some actionable tips, and a platform to exchange ideas about overcoming common verification challenges