38 Result(s)
within
Physics
Nuclear Energy
**-Hui Lu
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Article
Design and prototy** of the readout electronics for the transition radiation detector in the high energy cosmic radiation detection facility
The high energy cosmic-radiation detection (HERD) facility is planned to launch in 2027 and scheduled to be installed on the China Space Station. It serves as a dark matter particle detector, a cosmic ray inst...
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Article
Application of deep learning methods combined with physical background in wide field of view imaging atmospheric Cherenkov telescopes
The High Altitude Detection of Astronomical Radiation (HADAR) experiment, which was constructed in Tibet, China, combines the wide-angle advantages of traditional EAS array detectors with the high-sensitivity ...
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Article
Optimized online filter stack spectrometer for ultrashort X-ray pulses
Currently, with the advent of high-repetition-rate laser-plasma experiments, the demand for online diagnosis for the X-ray spectrum is increasing because the laser-plasma-generated X-ray spectrum is very impor...
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Article
Nondestructive technique for identifying nuclides using neutron resonance transmission analysis at CSNS Back-n
Nondestructive and noninvasive neutron assays are essential applications of neutron techniques. Neutron resonance transmission analysis (NRTA) is a powerful nondestructive method for investigating the elementa...
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Article
Open AccessPage curves for accelerating black holes
The island paradigm for the fine-grained entropy of Hawking radiation is applied to eternal charged accelerating black holes. In the absence of the island, the entanglement entropy grows linearly and divergent...
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Article
Measurement of the 232Th(n,f) cross section in the 1–200 MeV range at the CSNS Back-n
The 232Th(n,f) cross section is very important in basic nuclear physics and applications based on the Th/U fuel cycle. Using the time-of-flight method and a multi-cell fast-fission ionization chamber, a novel mea...
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Article
Design optimization of plastic scintillators with wavelength-shifting fibers and silicon photomultiplier readouts in the top veto tracker of the JUNO-TAO experiment
Plastic scintillators (PSs) embedded with wavelength-shifting fibers are widely used in high-energy particle physics, such as in muon taggers, as well as in medical physics and other applications. In this stud...
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Article
Open AccessPage curve and phase transition in deformed Jackiw–Teitelboim gravity
We consider the entanglement island in a deformed Jackiw–Teitelboim black hole in the presence of the phase transition. This black hole has the van der Waals–Maxwell-like phase structure as it is coupled with ...
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Article
Study on the influence of base plate deformation on long undulators
Nineteen undulators of various types are being fabricated for high-energy photon source (HEPS). In order to ensure the optical performance of the undulators, the girder deformation is usually carefully optimiz...
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Article
Open AccessLight-cone sum rule analysis of semileptonic decays \(\varLambda _b^0 \rightarrow \varLambda _c^+ \ell ^- {\overline{\nu }}_\ell \)
In this work, we analyze the semileptonic decay processes of \(\varLambda _b \rightarrow \varLambda _c\) ...
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Article
Open AccessFirst commissioning results of the coherent scattering and imaging endstation at the Shanghai soft X-ray free-electron laser facility
The Shanghai soft X-ray free-electron laser (SXFEL) user facility project started in 2016 and is expected to be open to users by 2022. It aims to deliver ultra-intense coherent femtosecond X-ray pulses to five...
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Article
A high sensitivity tune measurement system for BEPCII
The tune is one of the most important parameters of the storage ring which play a crucial role in the brightness optimization. The synchrotron radiation will suppress the oscillation and make the detection unu...
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Article
Superconducting multipole wiggler with large magnetic gap for HEPS-TF
A 16-pole superconducting multipole wiggler with a large gap of 68 mm was designed and fabricated to serve as a multipole wiggler for HEPS-TF. The wiggler consists of 16 pairs of NbTi superconducting coils wit...
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Article
Simulation results of the online tritiated water measurement system
Currently, the liquid scintillation method is widely used to measure the activity of tritiated water in the primary circuit of nuclear power plants, which leads to the continuous production of radioactive wast...
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Article
Preliminary study on detection and cleaning of parasitic bunches
To establish a nuclear resonant scattering beamline at the High Energy Photon Source (HEPS), it is essential to develop tools for detection and cleaning of parasitic bunches, for meeting the stringent demands ...
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Article
Single-block measurement for the cryogenic permanent magnet undulator sorting
The magnet sorting is a standard step in the undulator fabrication procedure. The shortest undulators period used in the High Energy Photon Source (HEPS) is only 12 mm. To the short period undulator, the sorti...
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Article
Open AccessSemileptonic decay of \(\varOmega _c^0 \rightarrow \var** ^- l^+ \nu _l\) from light-cone sum rules
The weak decay process of \(\varOmega _c\) Ω c ...
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Article
Back-n white neutron source at CSNS and its applications
Back-streaming neutrons from the spallation target of the China Spallation Neutron Source (CSNS) that emit through the incoming proton channel were exploited to build a white neutron beam facility (the so-call...
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Article
Open AccessCosmological time crystals from Einstein-cubic gravities
By including appropriate Riemann-cubic invariants, we find that the dynamics of classical time crystals can be straightforwardly realized in Einstein gravity on the FLRW metric. The time reflection symmetry is...
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Article
Open AccessOn the size of rotating black holes
Recently a sequence of inequalities relating the black hole horizon, photon sphere, shadow were proposed for spherically symmetric and static black holes, providing the upper bound for given mass. In this pape...
