A5019291788- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Advanced Data Storage Technologies
- Atomic and Subatomic Physics Research
- Semiconductor materials and devices
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
- Protein purification and stability
- Parallel Computing and Optimization Techniques
- Integrated Circuits and Semiconductor Failure Analysis
- Particle Accelerators and Free-Electron Lasers
- Distributed and Parallel Computing Systems
- Nuclear Physics and Applications
- Laser-Plasma Interactions and Diagnostics
- Gamma-ray bursts and supernovae
- Transition Metal Oxide Nanomaterials
- Optical properties and cooling technologies in crystalline materials
- Bacteriophages and microbial interactions
Deutsches Elektronen-Synchrotron DESY
2023-2025
University of Chicago
2024-2025
University of Antwerp
2024
University of Illinois Chicago
2020-2024
Fermi National Accelerator Laboratory
1985-2024
A. Alikhanyan National Laboratory
2023-2024
Institute of High Energy Physics
2022-2024
Princeton University
2023
University of Iowa
2023
Wayne State University
2011
The High Luminosity phase of the Large Hadron Collider will deliver 10 times more integrated luminosity than existing collider, posing significant challenges for radiation tolerance and event pileup on detectors, especially forward calorimetry. As part its upgrade program, Compact Muon Solenoid collaboration is designing a high-granularity calorimeter (HGCAL) to replace endcap calorimeters. It feature unprecedented transverse longitudinal readout triggering segmentation both electromagnetic...
The SVX vertex detector has been very successful in heavy flavor physics at CDF, playing a significant role both top and bottom analyses. SVX′, radiation hard version of SVX, is presently taking data. In 1998 the Main Injector upgrade to accelerator complex Fermilab will provide increase luminosity, require new detector, II. specifications design considerations for this are discussed.
RVS has made a significant breakthrough in the development of 640 × 512 array with unit cell size 20μm 20 μm and performance equivalent to that 25μm arrays. The successful this is first step achieving mega-pixel formats. This FPA designed ultimately achieve near temperature fluctuation limited NETD (<20mK, f/1, 30 Hz). SB-300 highly productized readout very good sensitivity (low low spatial noise) dynamic range. improved through bolometer structure improvements an innovative ROIC design. It...
RVS is producing high-quality microbolometer FPAs with 25 μm pixels. We have developed formats in both 320 x 240 and 640 480 array formats. These demonstrated sensitivities that are comparable to 50 pixels the best measured NETD value for these now <25mK an f/1 aperture operating at 30 Hz frame rates. Pixel operability greater than 99.9% on most FPAs, uncorrected responsivity nonuniformity less 3% (sigma/mean). detectors also a relatively fast thermal time constant of approximately 10...
Precision tracking and vertex reconstruction play a crucial role in heavy flavor physics at CDF, reconstructing the charm beauty decay vertices top events. A significant upgrade to CDF detector, including new silicon tracker, will support an extensive program with high luminosity provided by Main Injector accelerator upgrade. The specifications design considerations for this tracker/vertex detector are discussed.
A synchronous silicon strip readout system capable of zero dead-time at average trigger rates in excess 1 MHz is described. The implemented Fastbus, uses pipelining techniques, and includes point-to-point fiberoptic data links to transmit detector digital data. Semicustom ASIC (application-specific integrated circuit) chips are used amplify, discriminate, logically combine track before encoding. overall system, each major Fastbus module, the functional aspects described.< <ETX...
A hardware event builder (EVB) has been developed for use at the collider detector experiment Fermi National Accelerator (CDF). The presently consists of five FASTBUS modules and task reading out front-end scanners, reformatting data into YBOS band structure, transmitting to a level-3 (L3) trigger system which is composed multiple VME processing nodes. receives its instructions from VAX-based buffer manager program via Unibus processor interface. instructs read one four CDF front end...
The Low Cost Microsensors (LCMS) Program recently demonstrated state-of-the-art imagery in a long-range infrared (IR) sensor built upon an uncooled vanadium oxide (VOx) 640 x 480 format focal plane array (FPA) engine. is applicable to surveillance and targeting missions. intent of this DUS&T effort was further reduce the cost, weight, power IR sensors, increase capability these thereby expanding their applicability military commercial markets never before addressed by thermal imaging. In...
The Trigger Supervisor coordinates the triggering and digitization subprocess of CDF data acquisition system: it provides a gating signal to front-end electronics, directs gated be digitized stored into selected buffers, communicates identity filled buffers Buffer Manager, recycles after they have been read out: is implemented as FASTBUS Master contains three cooperating sequencers, two which are microcode based.
A system to collect and process data at high rate, 53 MHz, from a silicon microstrip detector has been developed. The is implemented using the FASTBUS standard modularized board level in 128 channel increments. includes following features: zero dead time readout for average trigger rate as 1 MHz; pipelined triggers event readout; programmable delay of up 4.8 mu s; histogram option; multiple high-speed bipolar ASICs (application-specific integrated circuits). general block diagram flow SSD...
A test stand for the next generation of Silicon Vertex Detector (SVX-II) Collider Facility (CDF) at Fermilab has been developed. It is capable performing cosmic ray, beam, and laser pulsing tests on silicon strip detectors using new SVX chips. The composed a SGI workstation, VME CPU, Test Acquisition Readout (STAR) board, Fiber Interface Board (TFIB), Port Card (TPC). STAR mediates between external stimuli different produces appropriate high level commands which are sent to TFIB. TFIB, in...
The objective of this article is to analyze entrepreneurship in Peruvian women, specifically the production pisco and creation organic gardens that have been developed recent years order support family economy. A study was carried out based on discourse experiences main protagonists.
Avoiding gate oxide damage due to excessive wafer charging has always been an issue with high current implanters. On the other hand, whether it is caused by shrinking of device dimensions, or its use as a backup for applications, level awareness becomes primary limiting factor running higher beam currents in medium Often cautious approach results lower machine throughput. To present, flooding low energy electrons from electron showers (E-Shower) widely accepted means reducing charging. The...
El Grupo de Oportunidades Desarrollo ECOPETROL, ha configurado un Modelo Integrado Visualizacion Activos para basado en la conocida metodologia FEL y el concepto toma decisiones bajo incertidumbre riesgo asociados a formulacion planes desarrollo activos petroleros. modelo consiste integracion los flujos trabajo identificacion evaluacion las oportunidades negocio, con base establecimiento plan conceptual activo. La recopilacion antecedentes, discusion problematicas relacionadas operacion del...
Cost-effective production of commercial-scale batches pharmaceutical-grade plasmid DNA remains a challenge for the maturing industry plasmid-based biologics. A process is required that meets quality standards human pharmaceutical products and yet economically suitable use in veterinary medicine or as an in-process product viral therapeutic production. Previously described scaleable cell lysis requires substantial capital investment. Also, these techniques contaminate stream with unnecessary...
Top of pageAbstract Advancements have been made in the manufacture non-viral plasmid-based products. The progression these products from inception through clinical development has prompted need for validated assays to evaluate impurities inherent plasmid production, such as host-cellular RNA. Current quantitative RNA impurity testing methods are time-consuming, complicated and expensive. We developed a cost-effective, straightforward, easy-to-validate Hydrophobic Interaction...
Low-shear, alkaline-lysis procedures for cell lysis have been well-described in the literature. These methods avoid mechanical damage to plasmid and other impurities. Further, low-shear lysate neutralization subsequent removal of solids is typically performed by means, such as filtration or centrifugation. However, these solid are limited their inability be scaled-up involve laborious numerous time-consuming steps. Liquid recovery has also very inefficient cases filtration. Methods developed...
Gate to substrate charging during high current ion implantation correlates gate oxide damage seen at product testing or reliability assessment, as can be discovered by tedious statistical evaluations. However, variations in over time do not lend themselves the same analysis. Using CHARM(R)-2 proactively monitor on a consistent basis 12 months detected adverse trends before levels impacted yield reliability. Variations also correlated preventive maintenance schedules, indicating need...
The Hewlett Packard HDMP-1000 G-Link transmitter and receiver chip set was tested for an event builder application. relock time of the serial link when a data path is changed less than 30 /spl mu/s provided fill frames are transmitted. With 1 kHz switching rate, this results in 3% rate inefficiency due to re-synchronization which makes HP effective use large hadron collider experiment.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Gate to substrate charging during high current ion implantation correlates gate oxide damage seen at product testing or reliability assessment, as can be discovered by tedious statistical evaluations. However, variations in over time do not lend themselves the same analysis. Using CHARM(R)-2 proactively monitor on a consistent basis 12 months detected adverse trends before levels impacted yield reliability. Variations also correlated preventive maintenance schedules, indicating need...