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MicroBooNE is a liquid Argon time projection chamber to be built at Fermilab for an accelerator-based neutrino physics experiment and as part of the R&D strategy for a large liquid argon detector at DUSEL. The waveforms of the ~9000 sense wires in the chamber are continuously digitized at 2 M samples/s - which results in a large volume of data coming off the TPC. We have developed a lossless data...
With the delivery of the first proton-proton collisions by the LHC, the ATLAS collaboration had the opportunity to operate the detector under a closer environment to what it was designed for. These first events have been of great interest not only for the high energy physics outcome, but also as a means to perform a general commissioning of the entire system, and in particular, of a highly scalable...
The ATLAS High Level Trigger (HLT) is a distributed real-time software system that performs the final online selection of events produced during proton-proton collisions at the Large Hadron Collider (LHC). It is designed as a two-stage trigger and event filter running on a farm of commodity PC hardware. Currently the system consists of about 850 processing nodes and will be extended incrementally...
The main task of the data acquisition (DAQ) system in Daya Bay Reactor Neutrino Experiment is to record antineutrino candidate events and other background events. There are seventeen detectors in three sites. Each detector will have a separate VME readout crate that contains the trigger and DAQ electronics modules. The DAQ system reads event data from front end electronics modules, concatenates data...
We present a detailed design for the upgrade of the analog front-end electronics for the ATLAS Tile Calorimeter (TileCal) at the sLHC by using the latest deep-micron-technology based, commercial off-the-shelf (COTS) components. We believe that with the latest technology based analog devices, the significant improvements in radiation tolerance are possible. The front-end analog electronics presents...
With the first proton-proton collisions at √s = 900 GeV in December 2009, the full chain of the ATLAS Trigger and Data Acquisition system could be tested under real conditions for the first time. Monitoring the performance and operation of these systems required a smooth and parallel running of many complex software tools depending on each other. They are the basis of rate measurements, data quality...
The MICE experiment is being commissioned at RAL to study the feasibility of a Neutrino Factory: muons are cooled by a dedicated system based on radiofrequency while the particle ID is performed by a KLOE-light detector followed by EMR (Electron Muon Ranger), a fully active tracker-calorimeter positioned at the end of the beamline. EMR consists of 48 planes of 59 1.1 m long scintillator bars with...
The Liquid Argon (LAr) calorimeter is a key detector component in the ATLAS experiment at the Large Hadron Collider (LHC) at CERN. The LAr calorimeter is designed to provide precision measurements of electrons, photons, jets and missing transverse energy. It consists of a set of sampling calorimeters kept in three separate cryostats with liquid argon as the active medium. The electronic readout of...
A general purpose FPGA based DAQ module has been developed. This module has been built around a Virtex-4 FPGA and it is able to acquire up to 1024 different channels distributed over 10 slave cards. The module has an optical interface a RS-232 a USB and a Gigabit Interface. The KLOE-2 experiment is going to use it to take data from the Inner tracker and the QCALT. An embedded processor (power pc 604)...
The surface detector array of the Pierre Auger Observatory contain 1600 water Cherenkov detectors spread over an area of 3000 km2. The Cherenkov light is detected by three 9-inch photomultiplier tubes from which the signals of the anode and last dynode are digitized by 10 bit ADCs. The currently used generations of the Front-End Boards equipped with the ACEX® and Cyclone™ chips were sampled with 40...
ATLAS is one of the two general-purpose detectors at the Large Hadron Collider (LHC). Its trigger system must reduce the anticipated proton collision rate of up to 40 MHz to a recordable event rate of 100-200 Hz. This is realized through a multi-level trigger system. The first-level trigger is implemented with custom-built electronics and makes an initial selection which reduces the rate to less than...
The PANDA detector is a state-of-the-art general-purpose detector for physics with high luminosity cooled antiproton beams, planed to operate at the FAIR facility in Darmstadt, Germany. The central detector includes a silicon Micro Vertex Detector (MVD) and a Straw Tube Tracker (STT) or Time Projection Chamber (TPC). The electromagnetic lead tungstate calorimeter(EMC) provides almost 4π spatial coverage,...
We discuss the possible use of GPUs (Graphics Processing Unit) in the all-digital trigger and data acquisition (TDAQ) chain of the NA62 experiment at CERN. The exponentially growing interest in using GPUs for general purpose applications is based on the impressive performances achieved (peak performance already exceeding the Teraflop/s), on the high bandwidth to memory (hundreds of GB/s) and on the...
To address the data rate requirements for upcoming experiments in high energy physics, we present a configurable architecture for data concentration and event building, based on the AdvancedTCA and MicroTCA standards. The core component is a μTCA based module which connects a Lattice ECP3 FPGA to up to 8 front panel fiber ports for data input from front-end electronics. In addition, the fiber ports...
We propose a new generation of VLSI processor for pattern recognition based on Associative Memory architecture, optimized for on-line track finding in high-energy physics experiments. We describe the architecture, the technology studies and the prototype design of a new R&D Associative Memory project: it maximizes the pattern density on ASICs, minimizes the power consumption and improves the functionality...
We present a novel active and analog readout and preprocessing topology for position sensitive photodetectors (PSPD) that allows to readout a large variety of PSPD devices with different pixel numbers. Additionally, the topology was designed to allow for a significant reduction of analog-to-digital conversion channels. The circuit topology replaces the common passive charge divider and consists of...
We present the results of the first online measurement in ATLAS of the LHC beam position and size at √s = 900 GeV in 2009 and √s = 7 TeV in spring 2010. A dedicated algorithm, implemented in the ATLAS Level 2 Trigger, takes fully reconstructed tracks in the Inner Detector as input to a fast vertex fitter in order to reconstruct vertices on an event-by-event basis. The three-dimensional distribution...
ALICE (A Large Ion Collider Experiment) is a heavy-ion detector designed to study the physics of strongly interacting matter and the quark-gluon plasma at the CERN Large Hadron Collider (LHC). Due to the complexity of ALICE in terms of number of detectors and performance requirements, data quality monitoring (DQM) plays an essential role in providing an online feedback on the data being recorded....
The KAOS spectrometer is maintained by the A1 collaboration at the Mainz Microtron MAMI with a focus on the study of (e, e'K+) coincidence reactions. For its electron-arm two vertical planes of fiber arrays, each comprising approximately 10 000 fibers, are operated close to zero degree scattering angle and in close proximity to the electron beam. A nearly dead-time free DAQ system to acquire timing...
XPAD3 is a large surface X-ray photon counting imager with high count rates, large counter dynamics and very fast data readout. Data are readout in parallel by a PCI Express interface using DMA transfer. The readout frame rate of the complete detector comprising 0.5 MPixels amounts to 500 images per second without dead-time.
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