M. Newcomer
A5110933813- Neutrino Physics Research
- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Particle physics theoretical and experimental studies
- Nuclear Physics and Applications
- Particle Accelerators and Free-Electron Lasers
- Atomic and Subatomic Physics Research
- Particle accelerators and beam dynamics
- Radiation Therapy and Dosimetry
- Radiation Effects in Electronics
- Planetary Science and Exploration
- Analog and Mixed-Signal Circuit Design
- Magnetic confinement fusion research
- CCD and CMOS Imaging Sensors
- VLSI and Analog Circuit Testing
- Superconducting Materials and Applications
- International Science and Diplomacy
- Big Data Technologies and Applications
- Earthquake Detection and Analysis
- Medical Imaging Techniques and Applications
- Advancements in Semiconductor Devices and Circuit Design
- Energy Efficient Wireless Sensor Networks
- Low-power high-performance VLSI design
California University of Pennsylvania
1991-2024
University of Pennsylvania
2012-2023
William Penn University
2011
Philadelphia University
1992-2010
Stockholm University
1999
McGill University
1993
University of Wisconsin–Madison
1993
EOS is a technology demonstrator, designed to explore the capabilities of hybrid event detection technology, leveraging both Cherenkov and scintillation light simultaneously. With fiducial mass four tons, operate in high-precision regime, with sufficient size utilize time-of-flight information for full reconstruction, flexibility demonstrate range cutting edge technologies, simplicity design facilitate potential future deployment at alternative sites. Results from can inform neutrino...
The ATLAS experiment will build an all-silicon tracker in the Phase II upgrade for High Luminosity LHC (HL-LHC) at CERN. For silicon strip detector of Inner Tracker, a new readout chip ABCStar is under design to cope with increased occupancies and harsher radiation environment, accomodate trigger architecture. In this paper, we summarize status work present features chip.
We present the test results of ABCN-25 front end chip implemented in CMOS 0.25 μm technology and optimised for short, 2.5 cm, silicon strips intended to be used upgrade ATLAS Inner Detector. have obtained full functionality readout part, expected performance analogue front-end operation power control circuits. The is evaluated view minimization consumption, as detector may contain up 70 million channels. System tests with different distribution schemes proposed future tracker detectors are...
The science focal plane of the Large Synoptic Survey Telescope is made up 21 modules designated "raft towers". Each raft tower module (RTM) an autonomous, fully-testable and serviceable 144 Mpixel imager consisting nine highly-segmented CCDs with complete readout electronics chain. To minimize noise obscuration RTM housed in a compact enclosure fully contained within camera cryostat. required to meet strict performance goals for image flatness, speed, noise, power dissipation. Key components...
The Micromesh Gaseous Structure, or Micromegas, is a technology developed for high count-rate applications in high-energy physics experiments. Tests using Micromegas chamber and specially designed amplifiers readout electronics adapted to the requirements of proton therapy environment providing both excellent time spatial resolution are presented here. device was irradiated at Roberts Proton Therapy Center University Pennsylvania. system operated with ionization gains between 10 200 low...
Detector mounted electronics for the ATLAS inner detector at LHC will be exposed to high levels of radiation. Calculations TRT straw tracker predict a total dose 4 Mrad ionizing radiation and 10/sup 14/ neutrons/cm/sup 2/ after ten years operation. The ASDBLR has been designed provide complete analog signal processing chain tubes remain operational well beyond calculated year levels. Fabricated devices have gamma, neutron proton irradiation. Post-rad measurements indicate that able operate above
We report measurements of the transverse diffusion electrons in P-10 gas (90% Ar, 10% CH4) a laboratory-scale time projection chamber (TPC) utilizing novel pixelated signal capture and digitization technique known as Q-Pix. The Q-Pix method incorporates precision switched integrating transimpedance amplifier whose output is compared to threshold voltage. Upon reaching threshold, comparator sends 'reset' signal, initiating discharge capacitor. difference between successive resets inversely...
For the medium-energy proton polarimeter mounted at focal-plane of Big-Bite Spectrometer Kernfysisch Versneller Instituut Groningen, a new wire-chamber readout has been developed. The charge-sensitive preamplifier is based on ASD-8 B chip which an input impedance 115 /spl Omega/. This low and short integration time 6 ns usable sensitivity 5 fC allow high rates gas amplifications. front-end circuit all four multi-wire proportional chambers two vertical-drift with 3872 wires in total....
Details of the construction high-rate, mid-sized (1-m*2-m) pad chambers, intended for use in Fermi National Accelerator Laboratory (FNAL) experiment E-771, are described. Each gas volume module represents a chamber doublet: two identical anode wire planes, transverse strip and planes. Wire signals, from 8-mm square cells, recorded via TDCs; corresponding stripe image signals latched. Pad sizes range 0.8 cm*3.6 cm to 3.2 cm*35 cm. In addition facilitating pattern recognition, also used as...
In this paper, a NIR non-invasive imager prototype using discrete components (all CMOS integrated circuits) was built which incorporates correlated double sampling (CDS) technique. Low frequency noise and offsets of amplifiers are removed by subtracting it from signal through CDS. The is comprised current-to-voltage preamp (I-V), post-gain amplifier the CDS system, consists several sample & hold subtracter circuits. system being used to quantify change oxy- deoxy-hemoglobin. circuit operates...
The Transition Radiation Tracker, made of 370000 cylindrical straws, is a combined tracking and electron identification detector, which part the ATLAS Inner Detector at CERN LHC. TRT on-detector electronics 2 types custom asics, handling analogue signals from providing ternary encoded output (ASDBLR), binning incoming discriminator signal into 3.25ns bins storing up to 6 microseconds level 1 storage (DTMROC). This joined off-detector via patch-panels in charge data distribution. comprised...
Purpose: While the energy of therapeutic proton beams can be adjusted to penetrate any given depth in water, range uncertainties arise patients due part imprecise knowledge stopping power protons human tissues [1]. Proton radiography is one approach reduce beam uncertainty [2], thereby allowing for a reduction treatment margins and dose escalation. Methods: The authors have adapted novel detector technology based on Micromesh Gaseous Structure (“Micromegas”) therapy demonstrated fine spatial...
A new version of the circuit for readout ATLAS straw tube detector, TRT [1], has been developed in a deep-submicron process. The DTMROC-S is fabricated commercial 0.25μm CMOS IBM technology, with library hardened by layout techniques [2]. Compared to previous chip [3] done 0.8μm radiation-hard and despite features added improving robustness testability circuit, technology results much smaller size that increases production yield lowers power consumption.
We present a front-end ASIC for liquid argon calorime- ters. The preamplifier, of new concept, is based on fully differen- tial amplifier with passive feedback and it provides at the same time very low noise programmable termination single-ended to fully- differential conversion. preamplifier feeds two fully-differential anti-aliasing bipolar shapers differentgains, designed achieve an overall dynamic range in excess of104 characterized by high output drive capability. ASICis composed eight...
This paper presents a FPGA based Real Time Simulator of ILC superconducting RF cavities. The system has been developed on Lyrtech VHS-ADAC board, through the use Xilinx System Generator and Simulink. is mainly being for allowing testing LLRF systems in real time different cavities parameters.
As a part of the effort to design prototype low-mass tracking detector, an empirical model high-frequency behavior small-diameter proportional straw tubes was developed. The equivalent circuit is distributed network RLC-clusters, where value discrete components directly related measurable characteristics em straws. approximation as low-loss transmission line, and it yields very good agreement with measurements reflection coefficients. Measurements simulations input impedance in frequency...