H. J. Cheng
A5047788947- 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
- Computational Physics and Python Applications
- Neutrino Physics Research
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Distributed and Parallel Computing Systems
- Particle Accelerators and Free-Electron Lasers
- Atomic and Subatomic Physics Research
- Medical Imaging Techniques and Applications
- Structural Analysis of Composite Materials
- International Science and Diplomacy
- Particle accelerators and beam dynamics
- Stochastic processes and financial applications
- Advanced Data Storage Technologies
- Advanced Semiconductor Detectors and Materials
- Random Matrices and Applications
- Sparse and Compressive Sensing Techniques
- advanced mathematical theories
- Microwave Imaging and Scattering Analysis
National Taiwan University
2021-2025
Institute of High Energy Physics
2016-2024
Chinese Academy of Sciences
2016-2024
Deutsches Elektronen-Synchrotron DESY
2023-2024
Institute of High Energy Physics
2022-2024
A. Alikhanyan National Laboratory
2022-2024
Naval University of Engineering
2021-2024
China Spallation Neutron Source
2024
Cornell University
2020-2023
Chulalongkorn University
2023
This is the third out of five chapters final report [1] Workshop on Physics at HL-LHC, and perspectives HE-LHC [2]. It devoted to study potential, in search for Beyond Standard Model (BSM) physics, High Luminosity (HL) phase LHC, defined as $3~\mathrm{ab}^{-1}$ data taken a centre-of-mass energy $14~\mathrm{TeV}$, possible future upgrade, Energy (HE) $15~\mathrm{ab}^{-1}$ $27~\mathrm{TeV}$. We consider large variety new physics models, both simplified model fashion more model-dependent one....
The center-of-mass energy of Circular Electron Positron Collider (CEPC) could be upgrade to 360 GeV level (CEPC@360GeV) after its ten-year running at 240 GeV. Besides SM precision measurements, CEPC@360GeV also has good potential for BSM physics searches, which is a complementary hadron colliders. This paper presents the sensitivity study direct stau and smuon pair production CEPC with $\sqrt{s}$ = by full Monte Carlo (MC) simulation. With 1.0 ab$^{-1}$ integrated luminosity assumption flat...
Abstract The reconstruction from the measured visibilities to signal in radio interferometry is an ill-posed inverse problem. compressed sensing technology represented by sparsity averaging reweighted analysis (SARA) has been successfully applied radio-interferometric imaging. However, traditional SARA algorithm solves L 1 norm minimization problem instead of 0 one, which a bias In this paper, q proximal gradient with < proposed ameliorate and obtain accurate solution interferometry....
The Circular Electron Positron Collider (CEPC) is a large-scale collider facility that can serve as factory of the Higgs, Z, and W bosons upgradable to run at ttbar threshold. This document describes latest CEPC nominal operation scenario particle yields updates corresponding physics potential. A new detector concept also briefly described. submission for consideration by Snowmass process.
Abstract The Compact Muon Solenoid collaboration is designing a new high-granularity endcap calorimeter, HGCAL, to be installed later this decade. As part of development work, prototype system was built, with an electromagnetic section consisting 14 double-sided structures, providing 28 sampling layers. Each layer has hexagonal module, where multipad large-area silicon sensor glued between electronics circuit board and metal baseplate. pads approximately 1.1 cm 2 are wire-bonded the readout...
Abstract The upgrade of the CMS experiment for high luminosity operation LHC comprises replacement current endcap calorimeter by a granularity sampling (HGCAL). electromagnetic section HGCAL is based on silicon sensors interspersed between lead and copper (or tungsten) absorbers. hadronic uses layers stainless steel as an absorbing medium active in regions radiation exposure, scintillator tiles directly read out photomultipliers remaining regions. As part development detector its readout...
Abstract This paper describes the experience with calibration, reconstruction and evaluation of timing capabilities CMS HGCAL prototype in beam tests 2018. The calibration procedure includes multiple steps corrections ranging from tens nanoseconds to a few hundred picoseconds. performance is studied using signals positron particles energies between 20 GeV 300 GeV. as function particle energy against an external reference well standalone by comparing two different halves prototype. resolution...
As part of its HL-LHC upgrade program, the CMS collaboration is replacing existing endcap calorimeters with a high-granularity calorimeter (CE). The new sampling unprecedented transverse and longitudinal readout for both electromagnetic hadronic compartments. Due to compactness, intrinsic time resolution, radiation hardness, silicon has been chosen as active material regions exposed higher levels. sensors are fabricated 20 cm (8") wide hexagonal wafers segmented into several hundred pads...
The Circular Electron Positron Collider (CEPC) with a center-of-mass energy $\sqrt{s}$ = 240 GeV is proposed to serve as Higgs factory, while it can also provide good opportunity for new physics searches at lower energy, which are difficult in hadron colliders but well-motivated by some theory models such dark matter. This paper presents the sensitivity study of direct stau / smuon production CEPC using full Monte Carlo (MC) simulation. With assumption flat 5% systematic uncertainty, has...
The proposed Circular Electron Positron Collider (CEPC), with a center-of-mass energy $\sqrt{s} = 240$ GeV, will primarily serve as Higgs factory. At the same time, it can offer good opportunities to search for new physics phenomena at low energy, which be challenging discover hadron colliders, but well motivated by some theoretical models developed explain, e.g., relic abundance of dark matter. This paper presents sensitivity studies chargino pair production, considering scenarios both...
Specular GaAsySb1-y films with Sb content less than 30% have been grown heteroepitaxially on GaAs buffer layers by controlling the atomic flux ratio of to Ga supply excess arsenic maintain a slight group V stabilized surface condition. The incorporation coefficient antimony atoms is about 0.5 at growth temperature 520 °C. Free carrier concentration profiles specimens GaAsySb1-y/GaAs interfaces measured electrolytic C–V profiling show dips in interface regions, probably caused energy states...
This paper describes the experience with calibration, reconstruction and evaluation of timing capabilities CMS HGCAL prototype in beam tests 2018. The calibration procedure includes multiple steps corrections ranging from tens nanoseconds to a few hundred picoseconds. performance is studied using signals positron particles energies between 20 GeV 300 GeV. as function particle energy against an external reference well standalone by comparing two different halves prototype. resolution found be...