16 Result(s)
within
**g-Ze Zhang
Physics
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Article
Equalization for the low-response cells of the AMS-02 electromagnetic calorimeter
Performing precision equalization on the low-response detection units of electromagnetic calorimeter (ECAL), it is essential for precision energy measurements of Alpha Magnetic Spectrometer (AMS-02).
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Article
Dense short muon source based on laser-ion accelerators
Muons have broad applications in fundamental science such as material science, chemistry, biology, and nuclear physics, which are produced mainly through the proton-nucleon reactions driven by RF-based acceler...
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Cosmic-ray helium nuclei measurement with the calorimeter of the Alpha Magnetic Spectrometer
The distributions of energy responses of helium measured by the electromagnetic calorimeter (ECAL) of Alpha Magnetic Spectrometer (AMS-02) in Monte-Carlo do not agree with those in real data, thus using energy...
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Band structures of the bowtie lattice and its ribbons influenced by \(\mathcal{PT}\) -symmetric imaginary potentials
By introducing the \(\mathcal PT\) P T ...
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On-orbit equalization of the electromagnetic calorimeter of the Alpha Magnetic Spectrometer
The Alpha Magnetic Spectrometer (AMS-02) will continuously collect data for the lifetime of the International Space Station (ISS). On-orbit equalization must be performed to ensure the accuracy of the AMS ener...
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Article
Charge resolution in the isochronous mass spectrometry and the mass of \(^{51}\) Co
Isochronous mass spectrometry (IMS) of heavy-ion storage rings is a powerful tool for the mass measurements of short-lived nuclei. In IMS experiments, masses are determined through precision measurements of th...
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Article
Improvement of cosmic-ray proton measurement with the electromagnetic calorimeter of the Alpha Magnetic Spectrometer
The energy response of protons measured by electromagnetic calorimeter (ECAL) of Alpha Magnetic Spectrometer (AMS-02) shows disagreement between Monte Carlo (MC) simulation and data. Therefore, using the respo...
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Towards satellite-based quantum-secure time transfer
High-precision time synchronization for remote clocks plays an important role in fundamental science1–3 and real-life applications4,5. However, current time synchronization techniques6,7 have been shown to be vul...
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Constraints on active and sterile neutrinos in an interacting dark energy cosmology
We investigate the impacts of dark energy on constraining massive (active/sterile) neutrinos in interacting dark energy (IDE) models by using the current observations. We employ two typical IDE models, the int...
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Article
ADS Injector-I 2 K superfluid helium cryogenic system
The Accelerator Driven Sub-critical (ADS) system is a strategic plan to solve the nuclear waste problem for nuclear power plants in China. High-energy particle accelerators and colliders contain long strings o...
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Improvement in the 3D shower shapes description in the Monte Carlo simulation for a lead-scintillating fiber electromagnetic calorimeter
The lead-scintillating fiber electromagnetic calorimeter (ECAL) of the Alpha Magnetic Spectrometer measures the energy of positrons/electrons and separates them from hadrons. The electromagnetic shower shapes ...
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Precision mass measurements of short-lived nuclides at HIRFL-CSR in Lanzhou
In recent years, extensive short-lived nuclear mass measurements have been carried out at the Heavy- Ion Research Facility (HIRFL) in Lanzhou using Isochronous Mass Spectrometry (IMS). The obtained mass values...
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Probing the sign-changeable interaction between dark energy and dark matter with current observations
We consider the models of vacuum energy interacting with cold dark matter in this study, in which the coupling can change sigh during the cosmological evolution. We parameterize the running coupling b by the form...
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Redshift drift constraints on holographic dark energy
The Sandage-Loeb (SL) test is a promising method for probing dark energy because it measures the redshift drift in the spectra of Lyman-α forest of distant quasars, covering the “redshift desert” of 2 ≲ z ≲ 5, wh...
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Article
Large-scale spatial angle measurement and the pointing error analysis
A large-scale spatial angle measurement method is proposed based on inertial reference. Common measurement reference is established in inertial space, and the spatial vector coordinates of each measured axis i...
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Article
Redshift drift constraints on f(T) gravity
We explore the impact of the Sandage–Loeb (SL) test on the precision of cosmological constraints for f(T) gravity theories. The SL test is an important supplement to current cosmological observations because it m...
