A5077005665- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Neutrino Physics Research
- Distributed and Parallel Computing Systems
- Astrophysics and Cosmic Phenomena
- Parallel Computing and Optimization Techniques
- Radiation Detection and Scintillator Technologies
- Dark Matter and Cosmic Phenomena
- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- Advanced Data Storage Technologies
- Superconducting and THz Device Technology
- Stochastic processes and financial applications
- Muon and positron interactions and applications
- Scientific Computing and Data Management
- Advancements in PLL and VCO Technologies
- Stochastic processes and statistical mechanics
- Electrostatic Discharge in Electronics
- Medical Imaging Techniques and Applications
- Advanced Mathematical Modeling in Engineering
- Radiation Effects in Electronics
Rutherford Appleton Laboratory
2008-2024
University of Chinese Academy of Sciences
2023
Centre National de la Recherche Scientifique
2014-2016
Université Savoie Mont Blanc
2015-2016
Institut National de Physique Nucléaire et de Physique des Particules
2014-2016
Laboratoire d’Annecy de Physique des Particules
2014
University of Zurich
2013
Syracuse University
2012
Tsinghua University
2012
TRIUMF
2012
The ATLAS Level-1 Calorimeter Trigger uses reduced-granularity information from all the calorimeters to search for high transverse-energy electrons, photons, τ leptons and jets, as well missing total transverse energy. calorimeter trigger electronics has a fixed latency of about 1 μs, using programmable custom-built digital electronics. This paper describes hardware, installed in cavern.
The T2K experiment studies oscillations of an off-axis muon neutrino beam between the J-PARC accelerator complex and Super-Kamiokande detector. Special emphasis is placed on measuring mixing angle theta_13 by observing electron appearance via sub-dominant to oscillation, searching for CP violation in lepton sector. includes a sophisticated, off-axis, near detector, ND280, situated 280 m downstream production target order measure properties understand better interactions at energy scale below...
The architecture of the ATLAS Level-1 Calorimeter Trigger system (L1Calo) is presented. Common approaches have been adopted for data distribution, result merging, readout, and slow control across three different subsystems. A significant amount common hardware utilized, yielding substantial savings in cost, spares, development effort. custom, high-density backplane has developed with paths suitable both em//spl tau/ cluster processor (CP) jet/energy-summation (JEP) modules also provide...
The PreProcessor system of the ATLAS Level-1 Calorimeter Trigger (L1Calo) receives about 7200 analogue signals from electromagnetic and hadronic components calorimetric detector system. Lateral division results in cells which are pre-summed to so-called Towers size 0.1 × along azimuth (ϕ) pseudorapidity (η). received calorimeter represent deposits transverse energy.
The ATLAS Level-1 Calorimeter Trigger is one of the main elements first stage event selection for experiment at LHC. input consists a mixed analogue/digital component taking trigger sums from calorimeters. logic performed in digital, pipelined system with several stages processing, largely based on FPGAs, which perform programmable algorithms parallel fixed latency to process about 300 Gbyte/s data. real-time output counts different types physics objects, and energy sums. final over...
In Run 3, the ATLAS Level-1 Calorimeter Trigger will be augmented by an Electron Feature Extractor (eFEX), to identify isolated e/γ and τ particles, a Jet (jFEX), energetic jets calculate various local energy sums. Each module accommodates more than 450 differential signals that can operate at up 12.8 Gb/s, some of which are routed over 30 cm between FPGAs. Here we present designs, processes have been adopted meet challenges associated with multi-Gb/s PCB design, results tests characterize...
Abstract The High Luminosity Large Hadron Collider (HL-LHC [1]), an upgrade of the LHC, is set to become operational in 2029, aiming achieve instantaneous luminosities 5–7.5 times larger than nominal value LHC. However, unlocking full physics potential at this much higher luminosity level necessitates a tenfold increase data bandwidth processed by ATLAS. This poses significant challenges design Trigger and Data Acquisition systems. To address these challenges, baseline architecture has been...
Diffusion models have emerged as a powerful framework for generative modeling, achieving state-of-the-art performance across various tasks. However, they face several inherent limitations, including training-sampling gap, information leakage in the progressive noising process, and inability to incorporate advanced loss functions like perceptual adversarial losses during training. To address these challenges, we propose an innovative end-to-end training that aligns sampling processes by...
The Level-1 Calorimeter Trigger is a major part of the first stage event selection for ATLAS experiment at LHC. It digital, pipelined system with several stages processing, largely based on FPGAs, which perform programmable algorithms in parallel fixed latency to process about 300 Gbyte/s input data. real-time output consists counts different types trigger objects and energy sums. Prototypes all module have been undergoing intensive testing before final production during 2005. Verification...
The ATLAS Level-1 Calorimeter Trigger consists of a Preprocessor, Cluster Processor (CP), and Jet/Energy-sum (JEP). CP JEP receive digitized trigger-tower data from the Preprocessor produce trigger multiplicities total missing energy for final decision. also provides region-of-interest information Level-2 intermediate results acquisition system monitoring diagnostics by using Readout Driver modules. identifies localizes jets, sums transverse data. Jet/Energy Module (JEM) is main module JEP....
A new Global Trigger subsystem will be installed in the Level-0 as part of High-Luminosity Large Hadron Collider (HL-LHC) upgrade ATLAS during upcoming Long-Shutdown 3. It feature and improved trigger hardware algorithms, an increased maximum output rate 1 MHz. The run offline-like algorithms on full-granularity data, gathered from several subdetectors processing subsystems. single global common module (GCM) is implemented across system to used a multiplexer processor (MUX), event (GEP),...
The ATLAS Level-1 Calorimeter Trigger is one of the main elements first stage event selection for experiment at LHC. input consists a mixed analogue/digital component taking trigger sums from calorimeters. logic performed in digital, pipelined system with several stages processing, largely based on FPGAs, which perform programmable algorithms parallel fixed latency to process about 300 Gbyte/s data. real-time output counts different types physics objects and energy sums. production final...
The ATLAS Level-1 Calorimeter Trigger is one of the main elements first stage event selection for experiment at LHC. input consists a mixed analogue/digital component taking trigger sums from calorimeters. logic performed in digital, pipelined system with several stages processing, largely based on FPGAs, which perform programmable algorithms parallel fixed latency to process about 300 Gbyte/s data. real-time output counts different types physics objects and energy sums. production final...
R. Achenbach b , V. Andrei B. Bauss B.M. Barnett . C. Bohm J.R.A. Booth I.P. Brawn D.G. Charlton C.J. Curtis A.O. Davis J. Edwards E. Eisenhandler P.J.W. Faulkner F. Fohlisch N. P. Gee Geweniger A.R. Gillman Hanke S. Hellman A. Hidvegi Hillier E-E. Kluge M. Landon K. Mahboubi G. Mahout Meier V.J.O. Perera W.Qian Rieke Ruhr D.P.C Sankey R.J. Staley U. Schafer Schmitt H.C. Schultz-Coulon Silverstein Stamen Tapprogge J.P. Thomas T. Trefzger D. Typaldos P.M. Watkins Watson Weber E.E. Woerhling a
The ATLAS Level-1 Trigger requires several upgrades to maintain physics sensitivity as the LHC luminosity is raised. One of most challenging electron/photon trigger, with a major development planned for installation in 2018. New on-detector electronics will be installed digitize electromagnetic calorimetry signals, providing trigger access shower profile information. processing ATCA-based, each multi-FPGA module ∼ 1 Tbit/s calorimeter digits within current 2.5 microseconds latency limit....
The level-1 calorimeter trigger consists of a preprocessor (PP), cluster processor (CP), and jet/energy-sum (JEP). CP JEP receive digitised trigger-tower data from the produce regions-of-interest (RoIs) multiplicities. latter are sent in real time to central (CTP) where decision is made. On receipt accept, readout driver modules (RODs) provide intermediate results acquisition (DAQ) system for monitoring diagnostic purposes. RoI information builder (RoIB) help reduce amount required level-2...
The Level-1 calorimeter trigger is a major part of the first stage event selection for ATLAS experiment at LHC. It digital, pipelined system with several stages processing, largely based on FPGAs, which perform programmable algorithms in parallel fixed latency to process about 300 Gbyte/s input data. real-time output consists counts different types objects and energy sums. Prototypes all module have been undergoing intensive testing before final production during 2005. Verification their...
The ATLAS first-level calorimeter trigger is a hard warebased system designed to identify high-p T jets, electron/photon and tau candidates, measure total missing E T. consists of Preprocessor which digitises 7200 analogue inputs, two digit al multicrate processor systems find en ergy sums, localised energy deposits (electron/ph oton candidates). In order provide quic kly enough, the hardware parallel pipelined. Experience so far Jet/Energy-sum Cluster Processor production, commissioning,...