P. K. Teng
A5107868838- 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
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Computational Physics and Python Applications
- Radiation Detection and Scintillator Technologies
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
- Nuclear physics research studies
- Particle Accelerators and Free-Electron Lasers
- X-ray Spectroscopy and Fluorescence Analysis
- Semiconductor Lasers and Optical Devices
- Nuclear Physics and Applications
- Distributed and Parallel Computing Systems
- Radiation Effects in Electronics
- Photonic and Optical Devices
- CCD and CMOS Imaging Sensors
- Atomic and Molecular Physics
- Physics of Superconductivity and Magnetism
- Superconducting Materials and Applications
- Semiconductor Quantum Structures and Devices
- Radio Frequency Integrated Circuit Design
Meizu (China)
2024
Institute of Physics, Academia Sinica
2011-2021
Academia Sinica
2007-2020
The University of Adelaide
2013-2019
Moscow Engineering Physics Institute
2019
University of Pennsylvania
2015-2016
University of California, Los Angeles
2012
National and Kapodistrian University of Athens
2011-2012
Argonne National Laboratory
2011-2012
European Organization for Nuclear Research
2012
A search of neutrino magnetic moment was carried out at the Kuo-Sheng Nuclear Power Station a distance 28 m from 2.9 GW reactor core. With high purity germanium detector mass 1.06 kg surrounded by scintillating NaI(Tl) and CsI(Tl) crystals as anti-Compton detectors, detection threshold 5 keV background level 1 kg(-1) keV(-1) day(-1) 12-60 were achieved. Based on 4712 1250 h ON OFF data, respectively, limit mu(nu;(e))<1.3x10(-10)mu(B) 90% confidence derived. An indirect bound nu;(e) radiative...
With a data sample containing 1.1×105 J/ψ→μ+μ− decays reconstructed with 16 MeV/c2 rms mass resolution, we have measured the differential cross sections versus Feynman-x, rapidity, and pT for production of J/ψ ψ' in 800 GeV/c p-Au collisions. Our results are compared leading-order QCD predictions previous measurements. While shapes qualitative agreement predictions, magnitudes disagree by factors 7 (J/ψ) 25 (ψ'). Assuming an appropriate form regions not derive total section...
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.
Using a silicon-microstrip detector array to identify secondary vertices, we have observed b→J/ψ→μ+μ− decays in 800GeV/c proton-gold interactions. The doubly differential cross section for J/ψ mesons originating from b-quark decays, assuming linear dependence on nucleon number, is d2σ/dxFdpT2=107±28±19[pb/(GeV/c)2]/nucleon at xF=0.05 and pT=1GeV/c. This measurement compared next-to-leading-order QCD predictions. integrated production section, obtained by extrapolation over all xF pT,...
The differential cross sections dσ/dxF for J/ψ produced inclusively in 800 GeV/c p-Cu and p-Be collisions have been measured the kinematic range 0.30≤xF≤0.95 through decay mode J/ψ→μ+μ−. They are compared with predictions of semilocal duality model several sets parton density functions. No evidence a suggested intrinsic charm contribution to section is observed. ratio Cu Be targets confirms suppression production heavy nuclei at large xF.Received 1 November...
Using data collected with the HyperCP (E871) spectrometer during 1997 fixed-target run at Fermilab, we report first observation of decay K--->pi(-)mu(+)mu(-) and new measurements branching ratios for K+/--->pi(+/-)mu(+)mu(-). By combining decays K+-->pi(+)mu(+)mu(-) K--->pi(-)mu(+)mu(-), measure Gamma(K+/--->pi(+/-)mu(+)mu(-))/Gamma(K+/--->all) = (9.8+/-1.0+/-0.5)x10(-8). The CP asymmetry between rates two modes is...
We have compared the p and p¯ angular distributions in 117×106 Ξ−→Λπ−→pπ−π− 41×106 Ξ¯+→Λ¯π+→p¯π+π+ decays using a subset of data from HyperCP experiment (E871) at Fermilab. find no evidence CP violation, with direct-CP-violating parameter AΞΛ≡(αΞαΛ−α¯Ξα¯Λ)/(αΞαΛ+α¯Ξα¯Λ)=[0.0±5.1(stat)±4.4(syst)]×10−4.Received 27 September 2004DOI:https://doi.org/10.1103/PhysRevLett.93.262001©2004 American Physical Society
We report the development of a mid-board, TOSA and ROSA based miniature dual channel optical transmitter (MTx) transceiver (MTRx). The design transmission data rate is 5.12 Gbps per receiving 4.8 Gbps. MTx MTRx are only 6 mm tall electrically optically pluggable. Although fiber TOSA/ROSA coupling through custom latch, uses standard LC ferrule, flange spring. with mechanism ensure light efficiency. With serializer LOCx2 sits under MTx, one achieves high small PCB footprint, enjoys reliability...
The ATLAS detector has been built to study the reactions produced by Large Hadron Collider (LHC). includes a system of liquid argon calorimeters for energy measurements. electronics amplifying, shaping, sampling, pipelining, and digitizing calorimeter signals is implemented on set front-end electronic boards. boards are installed in crates mounted between calorimeters, where they will be subjected significant levels radiation during LHC operation. As result, all components used had an...
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.
A sensitive search for the lepton-number-violating decay Xi(-)-->pmu(-)mu(-) has been performed using a sample of approximately 10(9) Xi(-) hyperons produced in 800 GeV/c p-Cu collisions. We obtain B(Xi(-)-->pmu(-)mu(-))<4.0x10(-8) at 90% confidence, improving on best previous limit by 4 orders magnitude.
We present the design and test results of Miniature optical Transmitter (MTx) Transceiver (MTRx) for high luminosity LHC (HL-LHC) experiments. MTx MTRx are Optical Subassembly (TOSA) Receiver (ROSA) based. There two major developments: Vertical Cavity Surface Emitting Laser (VCSEL) driver ASIC LOCld mechanical latch that provides connection to fibers. In this paper, we concentrate on justification work, these modules with a Commercial Off-The-Shelf (COTS) VCSEL driver.
We present the design and test results of two optical data transmission ASICs for High-Luminosity LHC (HL-LHC) experiments. These include a two-channel serializer (LOCs2) single-channel Vertical Cavity Surface Emitting Laser (VCSEL) driver (LOCld1V2). Both are fabricated in commercial 0.25-μm Silicon-on-Sapphire (SoS) CMOS technology operate at rate up to 8 Gbps per channel. The power consumption LOCs2 LOCld1V2 1.25 W 0.27 8-Gbps rate, respectively. has been verified meeting...
In this paper, a remote FPGA-configuration method based on JTAG extension over optical fibers is presented. The takes advantage of commercial components and ready-to-use software such as iMPACT does not require any hardware or development. combines the advantages slow configuration fast local flash memory configuration. has been verified successfully used in Demonstrator Liquid-Argon Trigger Digitization Board (LTDB) for ATLAS liquid argon calorimeter Phase-I trigger upgrade. All FPGA side...
We present designs and preliminary test results of LOCld1 LOCld4, VCSEL drivers in a commercial 0.25-μm Silicon-on-Sapphire (SoS) CMOS process for ATLAS liquid Argon calorimeter upgrade. Active shunt peaking, multiple-stage amplification higher voltage supply are used to achieve the data rate 8 Gbps. is single channel driver with differential output, while LOCld4 has four channels single-ended open-drain outputs. Both have tunable modulation peaking strength. Bias current also embedded.
A compact radiation-tolerant array optical transmitter module (ATx) is developed to provide data transmission up 10Gbps per channel with 12 parallel channels for collider detector applications. The ATx integrates a Vertical Cavity Surface-Emitting Laser (VCSEL) and driver circuitry electrical conversion, an edge warp substrate the interface micro-lens interface. This paper reports continuing development of custom package. simple, high-accuracy reliable active-alignment method coupling...
We have measured the α parameter of Ω−→ΛK− decay using data collected with HyperCP spectrometer during 1997 fixed-target run at Fermilab. Analyzing a sample 0.96×106 Ω−→ΛK−, Λ→pπ− decays, we obtain αΩαΛ=[1.33±0.33(stat)±0.52(syst)]×10−2. With accepted value αΛ, αΩ is found to be [2.07±0.51(stat)±0.81(syst)]×10−2.Received 4 January 2005DOI:https://doi.org/10.1103/PhysRevD.71.051102©2005 American Physical Society
The integration of a Verticle Cavity Surface-Emitting Laser (VCSEL) array and driving Application-Specific Integrated Circuit (ASIC) in custom optical transmitter module (ATx) for operation the detector front-end is constructed, assembled tested. ATx provides 12 parallel channels with each channel operating at 10 Gbps. eye diagram passes mask bit-error rate (BER) less than 10−12 transmission achieved Gbps/ch. overall insertion loss including radiation induced attenuation sufficiently low to...