A5063032357- Neutrino Physics Research
- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Astrophysics and Cosmic Phenomena
- CCD and CMOS Imaging Sensors
- Advanced Semiconductor Detectors and Materials
- Radiation Effects in Electronics
- Atomic and Subatomic Physics Research
- Advanced Adaptive Filtering Techniques
- Medical Imaging Techniques and Applications
- Parallel Computing and Optimization Techniques
- Advanced Data Storage Technologies
- Magnetic Field Sensors Techniques
- Statistical and numerical algorithms
- Distributed and Parallel Computing Systems
- 3D IC and TSV technologies
- Superconducting Materials and Applications
- Control Systems and Identification
- Analog and Mixed-Signal Circuit Design
- Power Line Communications and Noise
- Advancements in PLL and VCO Technologies
- Superconducting and THz Device Technology
Lawrence Berkeley National Laboratory
2015-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca
2018-2021
Leibniz University Hannover
2019
Justus-Liebig-Universität Gießen
2017-2018
Stefan Meyer Institute for Subatomic Physics
2017-2018
University of Freiburg
2010
European Space Research and Technology Centre
2006
Fermi National Accelerator Laboratory
1992-2004
University of Bologna
2004
Kyungpook National University
2004
The Gamma Ray Energy Tracking In-Beam Nuclear Array (GRETINA), capable of determining the energy and position (within 2 mm) each gamma-ray interaction point tracking multiple interactions, has been designed. GRETINA will be composed seven detector modules, with four highly pure germanium crystals. Each crystal 36 segments one central contact instrumented by charge sensitive amplifiers. Two custom designed Digitizer/Digital Signal Processing (DSP) Trigger Timing Control, compose electronics...
A new class of adaptive filters, dubbed fixed pole filters (FPAF's), is introduced. These have infinite impulse responses, yet their adaptation exhibits provable global convergence. Good filter performance with a relatively small number adapted parameters permitted by the structure, thus reducing computational burden needed to implement filters. The implementation and complexity FPAF described, its modeling capabilities are determined. Excitation conditions on input established that...
CUORE—the Cryogenic Underground Observatory for Rare Events—is an experiment searching the neutrinoless double-beta (0νββ) decay of 130Te with array 988 TeO2 crystals operated as bolometers at ∼10 mK in a large dilution refrigerator. With this detector, we aim 0νββ half-life sensitivity 9×1025 y 5 live time, and background index ≲ 10−2 counts/keV/kg/y. Making effort to maintain radiopurity by minimizing bolometers' exposure radon gas during their installation cryostat, perform all operations...
The Gamma Ray Energy Tracking In-Beam Nuclear Array (GRETINA), a germanium detector system capable of measuring energy and position (within better than 2 mm rms) gamma-ray interaction points tracking multiple interactions, has been built. GRETINA is composed seven modules, each with four high purity crystals. Four custom designed electronics support the operation detectors: Digitizer/Digital Signal Processing (DSP), Trigger/Timing, Breakout Chassis Detector Interface Box. Digitizer/DSP...
Currently, computers can be composed of different Processing Units (PUs) - general-purpose and also programmable specialist-purpose. One the goals for such heterogeneity is to improve applications' performance. Particularly, scientific applications highly benefit from this kind platform. They produce large amounts data within several types algorithms, distinct PUs are an alternative better execute tasks. This work presents a new system box CPU, GPU, FPGA carry on site X-ray image...
A new data acquisition system for experiments using the Gammasphere detector array and associated detectors including double-sided silicon strip (DSSD) is under development. Waveform digitization triggering hardware identical to that developed GRETINA has been procured interfaced both existing DSSD provide significantly increased throughput event rates. parasitic signal connection cable plant provides ability simultaneously measure same events old systems. interface module manufactured...
The paper describes the Faraday room that shields CUORE experiment against electromagnetic fields, from 50 Hz up to high frequency. Practical constraints led choose panels made of light shielding materials. seams between were optimized with simulations minimize leakage. Measurements performance show attenuation a factor 15–20 at Hz, and 1000 above 1 kHz about 100 MHz.
Performance properties are presented of a new class pole/zero adaptive filters, obtained by fixing the pole locations filter and adapting only zeros. The structure these fixed filters is described, procedure developed for selecting based on priori information about optimal filter. performance compared via simulation with other filtering structures. experiments show that enable improved relative to finite impulse response (FIR), Laguerre Kautz given equal computational burden.< <ETX...
Abstract The Gamma-Ray Energy Tracking Array (GRETA) is a full 4π gamma-ray tracking detector capable of reconstructing the energy and three-dimensional position interactions within compact sphere high-purity germanium crystals. GRETA Detector Sphere will have capacity to accommodate total 30 Germanium Quad Modules (QDM). QDMs are be cooled maintained below 100 K using liquid nitrogen (LN) at all times while array in normal operation, require regular filling LN Dewar on each module. designed...
The pixel detector proposed for the BTeV experiment at Fermilab Tevatron will use bump-bonding technology based on either Indium or Pb/Sn solder to connect front-end readout chips silicon sensors. We have studied strength of bumps by visual inspection bonding sensor modules dummy made out glass. studies were done before and after thermal cycles, exposed intense irradiation, with assemblies glued a graphite substrate. also carried effects temperature changes both types bump bonds observing...
The main building block and readout unit of the planned CDF Run IIb silicon detector is a "stave," highly integrated mechanical, thermal, electrical structure. One its characteristic features copper-on-Kapton flexible cable for power, high voltage, data transmission, control signals that placed directly below microstrip sensors. dense packaging makes deadtime-less operation stave challenge since coupling bus activity into sensors must be suppressed efficiently. design relevant are discussed....
Abstract State-of-the-art physics experiments require high-resolution, low-noise, and low-threshold detectors to achieve competitive scientific results. However, experimental environments invariably introduce sources of noise, such as electrical interference or microphonics. The this environmental noise can often be monitored by adding specially designed “auxiliary devices” (e.g. microphones, accelerometers, seismometers, magnetometers, antennae). A model then constructed predict the...
At Fermilab, both pixel detector multichip module and sensor hybridization are being developed for the BTeV experiment. The is composed of three layers. lowest layer formed by readout integrated circuits (ICs). backs ICs in thermal contact with supporting structure, while tops flip-chip bump bonded to a sensor. A low mass flex-circuit interconnect glued on top this assembly, IC pads wire-bonded circuit. based design relying hybrid approach. This method offers maximum flexibility development...
The new silicon detector design for CDF relies on advanced packaging solutions in order to attain the strict small size and low mass requirements dictated by experiment's physics program. strip at is composed of overlaying sensors form a barrel around colliding beam. electronic instrumentation (sensors, readout, transceiver chips) assembled into staves this barrel. In paper we describe development mini port card (MPC). MPC located one ends stave, it responsible signal translation repetition...
The barrel-Time-of-Flight subdetector is one of the outer layers multi-layer design \panda target spectrometer. It designed with a minimal material budget in mind mainly consisting 90×30×5 mm3 thin plastic scintillator tiles read out on each end by serial connection 4 SiPMs. 120 such are placed 16 2460 × 180 mm2 PCB boards forming barrel covering an azimuthal angle from 22.5o to 150o. detector achieve time resolution below σ< 100 ps which allows distinguish events constant stream hits, as...
The gamma-ray energy tracking array (GRETA) is a detector system currently under construction in the USA. of gamma ray measured real time inside field-programmable gate (FPGA), employing typical processing chain shaper, pole–zero compensation (PZC), baseline restoration, and pulse high analysis. In this article, we propose two-pole PZC for GRETA based on analysis charge-sensitive amplifier (CSA). We derived time- discrete-domain versions implemented discrete version. present implementation...