A5005215065- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Radiation Detection and Scintillator Technologies
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Radiation Effects in Electronics
- Atomic and Subatomic Physics Research
- Advancements in Semiconductor Devices and Circuit Design
- Astrophysics and Cosmic Phenomena
- High-Energy Particle Collisions Research
- CCD and CMOS Imaging Sensors
- Particle Accelerators and Free-Electron Lasers
- Semiconductor materials and devices
- Superconducting Materials and Applications
- Particle accelerators and beam dynamics
- Nuclear Physics and Applications
- Medical Imaging Techniques and Applications
- Quantum Chromodynamics and Particle Interactions
- Muon and positron interactions and applications
- Advanced NMR Techniques and Applications
- Silicon Carbide Semiconductor Technologies
- Quantum, superfluid, helium dynamics
- Advanced Semiconductor Detectors and Materials
- Superconducting and THz Device Technology
- Advanced MRI Techniques and Applications
Brookhaven National Laboratory
2015-2024
Brookhaven College
1988-2024
McGill University
2021
Duke University
2017-2019
Triangle Universities Nuclear Laboratory
2019
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2017
Istituto Superiore di Sanità
2017
New York University
2009
Laboratoire d’Annecy de Physique des Particules
2006
Institut National de Physique Nucléaire et de Physique des Particules
2006
A new experiment is described to detect a permanent electric dipole moment of the proton with sensitivity $10^{-29}e\cdot$cm by using polarized "magic" momentum $0.7$~GeV/c protons in an all-electric storage ring. Systematic errors relevant are discussed and techniques address them presented. The measurement sensitive physics beyond Standard Model at scale 3000~TeV.
We developed a non-magnetic positron-emission tomography (PET) device based on the rat conscious animal PET that operates in small-animal magnetic resonance imaging (MRI) scanner, thereby enabling us to carry out simultaneous PET/MRI studies. The detector comprises 12 blocks, each being 4 × 8 array of lutetium oxyorthosilicate crystals (2.22 2.22 5 mm(3)) coupled matching avalanche photodiode array. housed plastic case, form 38 mm inner diameter ring with an 18 axial extent. Custom-built MRI...
Anesthesia is currently required for positron emission tomography (PET) studies of the animal brain in order to eliminate motion artifacts. However, anesthesia profoundly affects neurological state animal, complicating interpretation PET data. Furthermore, it precludes use study during normal behavior. The rat conscious tomograph (RatCAP) designed need studies. It a miniaturized full-ring scanner that attached directly head, imaging nearly entire brain. RatCAP utilizes arrays 2 mm /spl...
To satisfy the increasing interest in integration of electronics onto optical and ionizing particle fully depleted detectors, a nonconventional JFET (junction field-effect transistor), designed to operate on completely depleted, 2-k Omega -cm resistivity silicon substrate, has been designed, fabricated, tested at room temperature. The devices show very low gate leakage current, output conductance, transconductance per unit width 3 mS/mm, pinch-off voltage -1.5 V. detectors makes possible...
Static electric dipole moments of nondegenerate systems probe mass scales for physics beyond the Standard Model well those reached directly at high energy colliders. Discrimination between different models, however, requires complementary searches in atomic-molecular-and-optical, nuclear and particle physics. In this report, we discuss current status prospects near future a compelling suite such experiments, along with developments needed encompassing theoretical framework.
The ATLAS detector has been designed for operation at CERN's Large Hadron Collider. includes a complex system of liquid argon calorimeters. This paper describes the architecture and implementation custom front end electronics developed readout
We present a front-end application-specific integrated circuit (ASIC) for wire based time-projection-chamber (TPC) operating in liquid Argon (LAr). The LAr TPC will be used long baseline neutrino oscillation experiments. ASIC must provide low-noise readout of the signals induced on wires, digitization those at 2 MSamples/s, compression, buffering and multiplexing. A resolution better than 1000 rms electrons 200 pF input capacitance an range 300 fC is required, along with low power operation...
The ATLAS detector has been designed for operation at CERN's Large Hadron Collider. includes a complex system of liquid argon calorimeters. electronics amplifying, shaping, sampling, pipelining, and digitizing the calorimeter signals is implemented on Front End Boards (FEBs). This paper describes design, implementation production FEBs presents measurement results from testing performed several stages during process.
The choice between cold and warm electronics (inside or outside the cryostat) in very large LAr TPCs (>5-10 ktons) is not an issue, but it rather a major cryostat design issue. This because location of signal processing has direct far reaching effect on design, indirect TPC electrode (sense wire spacing, length drift distance), significant performance. All these factors weigh so overwhelmingly favor that remains optimal solution for TPCs. In this paper noise considerations are summarized,...
A low-noise, fast, charge-sensitive preamplifier was designed on high-resistivity, detector-grade silicon. It is built at the surface of a fully depleted region n-type silicon, allowing it to be placed very close detector anode. The uses classical input-cascode configuration with capacitor and high-value resistor in feedback loop. output stage can drive load up 20 pF. power dissipation 13 mW. amplifying elements are single-sided gate JFETs developed for this application. Preamplifiers...
Front-end electronics for liquid ionization chamber calorimetry at hadron collider experiments may be exposed to substantial levels of ionizing radiation and neutron fluences in a cryogenic environment. Measurements devices built with rad-hard technologies have shown that able operate these conditions exist. Several families (Si-JFETs, MOSFETs, GaAs MESFETs) been irradiated tested stable temperature up doses 55 Mrad 4/spl times/10/sup 14/ n/cm/sup 2/. Radiation effects on DC characteristics...
Electronic components used in high energy physics experiments are subjected to a radiation background composed of hadrons, mesons and photons. These particles can induce permanent transient effects that affect the normal device operation. Ionizing dose displacement damage cause chronic which disable permanently. Transient or single event general recoverable with time intervals depend on nature failure. The magnitude these is technology dependent feature size being one key parameters. Analog...
Liquid xenon time projection chambers are promising detectors to search for neutrinoless double beta decay (0$\nu \beta \beta$), due their response uniformity, monolithic sensitive volume, scalability large target masses, and suitability extremely low background operations. The nEXO collaboration has designed a tonne-scale chamber that aims 0$\nu \beta$ of \ce{^{136}Xe} with projected half-life sensitivity $1.35\times 10^{28}$~yr. To reach this sensitivity, the design goal is $\leq$1\%...