A Compton camera is being developed for the purpose of ion-range monitoring during hadrontherapy via the detection of prompt-gamma rays. The system consists of a scintillating fiber beam tagging ...hodoscope, a stack of double sided silicon strip detectors (90 Â 90 Â 2 mm 3 , 2 Â 64 strips) as scatter detectors, as well as bismuth germanate (BGO) scintillation detectors (38 Â 35 Â 30 mm 3 , 100 blocks) as absorbers. The individual components will be described, together with the status of their characterization.
Abstract
For the Phase II upgrade at HL-LHC, CMS needs a new Outer Tracker detector able to cope with reduced material budget, increased radiation tolerance and higher pile-up conditions with respect ...to LHC. The main feature of the Outer Tracker will be its inclusion at the first level of the CMS trigger system with data readout at 40 MHz. Two types of modules, Pixel-Strip and Strip-Strip will equip the Outer Tracker. Each module consists of a superposition of two silicon layers, able to detect charged particles, and an innovative readout electronics, allowing a significant data rate reduction. The Concentrator Integrated Circuit (CIC) is a 65 nm CMOS radiation tolerant front-end ASIC for both modules. It is considered a fundamental element of the future detector front-end chain due to its role in aggregating and compressing data from 8 front-end ASICs on each module. It reduces the data throughput by an order of magnitude. Two first version of the CIC were previously developed and tested. This paper will present the pre-production version, called CIC2.1, together with the functional and wafer test results.
Abstract
The Concentrator Integrated Circuit (CIC) ASIC is a front-end chip for both Pixel-Strip (PS) and Strip-Strip (2S) modules of the future Phase-II CMS Outer Tracker upgrade at the ...High-Luminosity LHC (HL-LHC). This data aggregator, designed in 65 nm CMOS technology, will be a key element of the tracker front-end chain. A first prototype, CIC1, was tested successfully in early 2019 and was followed by the development of a final radiation tolerant version of the chip: the CIC2. CIC2 design, implementation, and complete test results, are presented.
Fractional order systems Caponetto, Riccardo; Dongola, Giovanni; Fortuna, Luigi ...
2010., 2010, 2010-02-10, Letnik:
72
eBook
This book aims to propose the implementation and application of Fractional Order Systems (FOS). It is well known that FOS can be utilized in control applications and systems modeling, and their ...effectiveness has been proven in many theoretical works and simulation routines. A further and mandatory step for FOS real world utilization is their hardware implementation and applications on real systems modeling. With this viewpoint, introductory chapters are included on the definition of stability region of Fractional Order PID Controller and Chaotic FOS, followed by the practical implementation based on Microcontroller, Field Programmable Gate Array, Field Programmable Analog Array and Switched Capacitor. Another section is dedicated to FO modeling of Ionic Polymeric Metal Composite (IPMC). This new material will have applications in robotics, aerospace and biomedicine.
A large prototype of 1.3m3 was designed and built as a demonstrator of the semi-digital hadronic calorimeter (SDHCAL) concept proposed for the future ILC experiments. The prototype is a sampling ...hadronic calorimeter of 48 units. Each unit is built of an active layer made of 1m2 Glass Resistive Plate Chamber(GRPC) detector placed inside a cassette whose walls are made of stainless steel. The cassette contains also the electronics used to read out the GRPC detector. The lateral granularity of the active layer is provided by the electronics pick-up pads of 1cm2 each. The cassettes are inserted into a self-supporting mechanical structure built also of stainless steel plates which, with the cassettes walls, play the role of the absorber. The prototype was designed to be very compact and important efforts were made to minimize the number of services cables to optimize the efficiency of the Particle Flow Algorithm techniques to be used in the future ILC experiments. The different components of the SDHCAL prototype were studied individually and strict criteria were applied for the final selection of these components. Basic calibration procedures were performed after the prototype assembling. The prototype is the first of a series of new-generation detectors equipped with a power-pulsing mode intended to reduce the power consumption of this highly granular detector. A dedicated acquisition system was developed to deal with the output of more than 440000 electronics channels in both trigger and triggerless modes. After its completion in 2011, the prototype was commissioned using cosmic rays and particles beams at CERN.
Abstract
The CALICE Semi-Digital Hadronic CALorimeter (SDHCAL) is the
first technological prototype in a family of high-granularity
calorimeters developed by the CALICE Collaboration to equip the
...experiments of future lepton colliders. The SDHCAL is a sampling
calorimeter using stainless steel for absorber and Glass Resistive
Plate Chambers (GRPC) as a sensitive medium. The GRPC are read out
by 1 cm× 1 cm pickup pads combined to a
multi-electronics. The prototype was exposed to hadron beams in
both the CERN PS and the SPS beamlines in 2015 allowing the test of
the SDHCAL in a large energy range from 3 GeV to 80 GeV. After
introducing the method used to select the hadrons of our data and
reject the muon and electron contamination, we present the energy
reconstruction approach that we apply to the data collected from
both beamlines and we discuss the response linearity and the energy
resolution of the SDHCAL. The results obtained in the two beamlines
confirm the excellent SDHCAL performance observed with the data
collected with the same prototype in the SPS beamline in 2012. They
also show the stability of the SDHCAL in different beam conditions
and different time periods.
The NEMO Collaboration installed and operated an underwater detector including prototypes of the critical elements of a possible underwater km
3 neutrino telescope: a four-floor tower (called ...Mini-Tower) and a Junction Box. The detector was developed to test some of the main systems of the km
3 detector, including the data transmission, the power distribution, the timing calibration and the acoustic positioning systems as well as to verify the capabilities of a single tridimensional detection structure to reconstruct muon tracks. We present results of the analysis of the data collected with the NEMO Mini-Tower. The position of photomultiplier tubes (PMTs) is determined through the acoustic position system. Signals detected with PMTs are used to reconstruct the tracks of atmospheric muons. The angular distribution of atmospheric muons was measured and results compared to Monte Carlo simulations.
The NEMO project: A status report Taiuti, M.; Aiello, S.; Ameli, F. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
01/2011, Letnik:
626
Journal Article
Recenzirano
The latest results and the activities towards the construction of a km
3 Cherenkov neutrino detector carried out by the NEMO Collaboration are described. Long-term exploration of a 3500
m deep-sea ...site close to the Sicilian coast has shown that it is optimal for the installation of the detector. The NEMO Phase-1 project has validated several technologies proposed for the construction of the km
3 detector on a test site at 2000
m depth. The new infrastructure on the candidate Capo Passero site set up as part of the Phase-2 project will provide the possibility to test detector components at 3500
m depth.
Power-pulsed readout potentially offers a solution to the problem of high power consumption of the electronics for detectors at the future International Linear Collider (ILC) experiments. A 33 x 50 ...cm super(2) Glass Resistive Plate Chamber (GRPC) equipped with a power-pulsed electronics board offering 1 cm super(2) lateral segmentation was successfully tested in a 3-Tesla magnet. A significant reduction in power consumption with no deterioration of the detector performance was obtained when the power-pulsing mode was applied. This result shows that highly granular calorimeters for ILC experiments are not only an attractive but also a realistic option.
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