cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57760/sciencedb.03986
title: Modelling of the complete heat flux deposition on the CFETR first wall with neon seeding
title: Modelling of the complete heat flux deposition on the CFETR first wall with neon seeding

description: Steady-state heat flux deposition on the first wall of the Chinese Fusion Engineering Testing Reactor (CFETR) is investigated for 1 GW fusion power and under the updated design scheme. The computation is accomplished by the modelling of two simulation systems: SOLPS-ITER and PFCFlux. Seeding neon (Ne) gas is considered to be one of the possible methods of protecting the CFETR divertor from high heat flux damage. Simulations with different Ne seeding rates were carried out on a standard divertor with a lower single-null configuration to determine the effect of Ne seeding on heat flux deposition on the first wall. A blob-based transport model was used to investigate the effect of enhanced cross-field transport on the CFETR first wall, as with ITER and EU DEMO simulations. This work establishes a potential method for simulating the complete heat flux deposition on the first wall for the CFETR steady state by SOLPS-ITER and PFCFlux. After modelling and energy analysis, the peak value of complete heat flux on each module of the CFETR first wall is obtained, which may provide the basic reference for the CFETR physics and engineering design team. The CFETR first wall module which receives the highest heat flux has also been identified, and Ne seeding has a positive effect on reducing the heat flux on the CFETR first wall from around 2.5 MWm−2 to 1 MWm−2, which is within the engineering requirement.
description: Steady-state heat flux deposition on the first wall of the Chinese Fusion Engineering Testing Reactor (CFETR) is investigated for 1 GW fusion power and under the updated design scheme. The computation is accomplished by the modelling of two simulation systems: SOLPS-ITER and PFCFlux. Seeding neon (Ne) gas is considered to be one of the possible methods of protecting the CFETR divertor from high heat flux damage. Simulations with different Ne seeding rates were carried out on a standard divertor with a lower single-null configuration to determine the effect of Ne seeding on heat flux deposition on the first wall. A blob-based transport model was used to investigate the effect of enhanced cross-field transport on the CFETR first wall, as with ITER and EU DEMO simulations. This work establishes a potential method for simulating the complete heat flux deposition on the first wall for the CFETR steady state by SOLPS-ITER and PFCFlux. After modelling and energy analysis, the peak value of complete heat flux on each module of the CFETR first wall is obtained, which may provide the basic reference for the CFETR physics and engineering design team. The CFETR first wall module which receives the highest heat flux has also been identified, and Ne seeding has a positive effect on reducing the heat flux on the CFETR first wall from around 2.5 MWm−2 to 1 MWm−2, which is within the engineering requirement.
DOI: 10.57760/sciencedb.03977
title: Effects of He irradiation on the microstructure and mechanical performance of Li2TiO3
title: Effects of He irradiation on the microstructure and mechanical performance of Li2TiO3

description: In solid fusion blankets, energetic helium ions produced by the breeding reaction bombard Li2TiO3 and influence its microstructure and mechanical performance. Here, evaluations of the microstructure and mechanical performance are performed for Li2TiO3 irradiated with 2 MeV helium ions. The Raman spectra demonstrate irradiation-induced structural disorders, which are corroborated by transmission electron microscopy micrographs and selected area electron dispersion patterns. Nanoindentation investigations indicate that the hardness is influenced by irradiation damage. At low doses (about 0.018 dpa), the decrease in hardness is caused by dislocation motion and a decrease of the bond density per unit volume. At high doses (about 0.86 dpa), the defect clusters formed impede the mobility of dislocations, which is the main reason for the increase in hardness. Based on hardness theories and Raman spectra, the decrease in bond length is considered to be another reason for the increase in hardness.
description: In solid fusion blankets, energetic helium ions produced by the breeding reaction bombard Li2TiO3 and influence its microstructure and mechanical performance. Here, evaluations of the microstructure and mechanical performance are performed for Li2TiO3 irradiated with 2 MeV helium ions. The Raman spectra demonstrate irradiation-induced structural disorders, which are corroborated by transmission electron microscopy micrographs and selected area electron dispersion patterns. Nanoindentation investigations indicate that the hardness is influenced by irradiation damage. At low doses (about 0.018 dpa), the decrease in hardness is caused by dislocation motion and a decrease of the bond density per unit volume. At high doses (about 0.86 dpa), the defect clusters formed impede the mobility of dislocations, which is the main reason for the increase in hardness. Based on hardness theories and Raman spectra, the decrease in bond length is considered to be another reason for the increase in hardness.
DOI: 10.57760/sciencedb.j00133.00164
title: TourismUserCommentsDATA
title: 旅游用户评论数据

description: The dataset contains:(1) Hongcun comments: 3w user comments about Anhui Hongcun Scenic Area from e-commerce tourism platforms (Meituan, Ctrip, Qunar.com);(2) comments_filter: the result data after opinion extraction and emotion analysis of the original comment data set; The Review_id column represents the comment id of the opinion, the target column represents the attribute word in the opinion, the words column represents the adjective of the opinion, the opinion column represents the extracted opinion result, the category column represents the classification result of the attribute word, the sentiment_cn column represents the emotional rating of opinion pairs, the sentiment_opinion column represents the result of opinion emotion classification.
description: The dataset contains:(1) Hongcun comments: 3w user comments about Anhui Hongcun Scenic Area from e-commerce tourism platforms (Meituan, Ctrip, Qunar.com);(2) comments_filter: the result data after opinion extraction and emotion analysis of the original comment data set; The Review_id column represents the comment id of the opinion, the target column represents the attribute word in the opinion, the words column represents the adjective of the opinion, the opinion column represents the extracted opinion result, the category column represents the classification result of the attribute word, the sentiment_cn column represents the emotional rating of opinion pairs, the sentiment_opinion column represents the result of opinion emotion classification.
DOI: 10.57760/sciencedb.03981
title: A Snake-Inspired Layer-Driven Continuum Robot data
title: A Snake-Inspired Layer-Driven Continuum Robot data

description: This part of the work is to be completed from March 2020 to August 2021. The main focus is on the design, machining and manufacture and testing of snake robots.The program is a simulation.The pictures are of the test and simulation process.
description: This part of the work is to be completed from March 2020 to August 2021. The main focus is on the design, machining and manufacture and testing of snake robots.The program is a simulation.The pictures are of the test and simulation process.
DOI: 10.57760/sciencedb.03991
title: Divertor detachment with neon seeding in grassy-ELM H-mode in EAST
title: Divertor detachment with neon seeding in grassy-ELM H-mode in EAST

description: Simultaneous control of the transient heat load induced by the large-amplitude edge-localized modes (ELMs) and the time-averaged heat and particle fluxes to the divertor targets is a critical issue for the steady-state operation of a future tokamak fusion reactor. The combination of divertor detachment and grassy-ELM regime provides a candidate solution to this issue. The dataset includes the data of stable deep and partial detachment plasma with neon seeding in grassy-ELM H mode on EAST, as well as the data of compatibility of detachment with grassy-ELM H mode.
description: Simultaneous control of the transient heat load induced by the large-amplitude edge-localized modes (ELMs) and the time-averaged heat and particle fluxes to the divertor targets is a critical issue for the steady-state operation of a future tokamak fusion reactor. The combination of divertor detachment and grassy-ELM regime provides a candidate solution to this issue. The dataset includes the data of stable deep and partial detachment plasma with neon seeding in grassy-ELM H mode on EAST, as well as the data of compatibility of detachment with grassy-ELM H mode.
DOI: 10.57760/sciencedb.03993
title: Data related to resolution calculation of fast neutron radiography
title: 快中子照相分辨率计算相关数据

description: This data set is the derivation process of the formula for calculating the resolution of the neutron radiography image involved in the article of the optimization design of the fast neutron radiography system of the accelerator neutron source, and the code used in the drawing of the resolution correlation chart. 
description: This data set is the derivation process of the formula for calculating the resolution of the neutron radiography image involved in the article of the optimization design of the fast neutron radiography system of the accelerator neutron source, and the code used in the drawing of the resolution correlation chart.
DOI: 10.57760/sciencedb.03998
title: Experimental investigation and SOLPS-ITER modeling of Ne-seeded radiative divertor H-modes plasma on EAST
title: Experimental investigation and SOLPS-ITER modeling of Ne-seeded radiative divertor H-modes plasma on EAST

description: Both experimental modeling and numerical modeling were carried out on Experimental Advanced Superconductive Tokamak (EAST) to study the radiative divertor plasma behavior with neon (Ne) seeding. Steady H-mode radiation feedback control regimes (frad 18%–36%) were achieved by synergistic working of a divertor puff and supersonic molecular beam injection with Ne in the 2017 EAST campaign. Ne seeding effectively promoted divertor detachment while only causing a slight loss to the plasma stored energy in the experiment. To better understand the experimental result, analysis of the detachment process is introduced in this work. Two time slices namely before and after Ne seeding during the radiative divertor experiment in Shot #71021 were simulated by Scrape Off Layer Plasma Simulator (SOLPS)-ITER code. The simulation results for upstream plasma agreed well with the experiment, and the divertor profile agreed well on the outer targets when ignoring drifts. Radiation distribution was also calculated by SOLPS-ITER, showing that there was a high radiation region near the X-point, which is consistent with the experimental measurements.
description: Both experimental modeling and numerical modeling were carried out on Experimental Advanced Superconductive Tokamak (EAST) to study the radiative divertor plasma behavior with neon (Ne) seeding. Steady H-mode radiation feedback control regimes (frad 18%–36%) were achieved by synergistic working of a divertor puff and supersonic molecular beam injection with Ne in the 2017 EAST campaign. Ne seeding effectively promoted divertor detachment while only causing a slight loss to the plasma stored energy in the experiment. To better understand the experimental result, analysis of the detachment process is introduced in this work. Two time slices namely before and after Ne seeding during the radiative divertor experiment in Shot #71021 were simulated by Scrape Off Layer Plasma Simulator (SOLPS)-ITER code. The simulation results for upstream plasma agreed well with the experiment, and the divertor profile agreed well on the outer targets when ignoring drifts. Radiation distribution was also calculated by SOLPS-ITER, showing that there was a high radiation region near the X-point, which is consistent with the experimental measurements.
DOI: 10.57760/sciencedb.03997
title: Dataset of Diagnostic development for parallel wavenumber measurement of lower hybrid waves in EAST
title: 数据集

description: Dataset of Diagnostic development for parallel wavenumber measurement of lower hybrid waves in EAST
description: Dataset of Diagnostic development for parallel wavenumber measurement of lower hybrid waves in EAST
DOI: 10.57760/sciencedb.03999
title: Experimental Study on the Release Behavior of Deuterium from Advanced Tritium Breeder Core-Shell Li2TiO3-Li4SiO4
title: Experimental Study on the Release Behavior of Deuterium from Advanced Tritium Breeder Core-Shell Li2TiO3-Li4SiO4

description: Core-shell Li2TiO3-Li4SiO4 has been suggested as an advanced tritium breeder for outstanding mechanical strength and rich lithium. However, no study has reported on the release behavior of hydrogen isotopes from core-shell Li2TiO3-Li4SiO4. This paper focuses on a deuterium exposure experiment to investigate deuterium release behavior. X-ray diffraction, Raman, and electron spin resonance measurements were adopted to analyze the phase change, crystal structure modification, and defects before and after deuterium exposure. Thermal desorption spectroscopy was used to study the deuterium release behavior of core-shell Li2TiO3-Li4SiO4. Deuterium release from single Li4SiO4 and Li2TiO3 was also examined for comparison. The similarity of the deuterium release profiles between core-shell Li2TiO3-Li4SiO4 and Li4SiO4 was observed, which was considered to be caused by the incomplete coverage of shell Li2TiO3 on the core-shell samples.
description: Core-shell Li2TiO3-Li4SiO4 has been suggested as an advanced tritium breeder for outstanding mechanical strength and rich lithium. However, no study has reported on the release behavior of hydrogen isotopes from core-shell Li2TiO3-Li4SiO4. This paper focuses on a deuterium exposure experiment to investigate deuterium release behavior. X-ray diffraction, Raman, and electron spin resonance measurements were adopted to analyze the phase change, crystal structure modification, and defects before and after deuterium exposure. Thermal desorption spectroscopy was used to study the deuterium release behavior of core-shell Li2TiO3-Li4SiO4. Deuterium release from single Li4SiO4 and Li2TiO3 was also examined for comparison. The similarity of the deuterium release profiles between core-shell Li2TiO3-Li4SiO4 and Li4SiO4 was observed, which was considered to be caused by the incomplete coverage of shell Li2TiO3 on the core-shell samples.
DOI: 10.57760/sciencedb.04002
title: raw date for EAMA elevation joint error compensation
title: raw date for EAMA elevation joint error compensation

description: The dataset contains the raw data of EAMA elevation angle.
description: The dataset contains the raw data of EAMA elevation angle.
DOI: 10.57760/sciencedb.04005
title: Thermal analysis of beamline heat load components due to increased power delivery from EAST neutral beam injector
title: Thermal analysis of beamline heat load components due to increased power delivery from EAST neutral beam injector

description: According to EAST’s experimental plan, the long pulse and high power operation of neutral beam injector (NBI) is the requirement for EAST. In this paper, the operation range of beam perveance is adjusted from 1.9~2.5 μP to 2.5~3.3 μP through changing the voltage ratio of gradient grid/ plasma grid from 0.84 to 0.78. The thermal analysis of beamline heat load components shows with the decrease of the voltage ratio of gradient grid/ plasma grid from 0.84 to 0.78, the maximum neutral beam power deposition on the calorimeter increases from 825 kW to 950 kW when accelerating voltage is 50 kV. The results show that the minimum beam divergence increases from 1.25° to 1.32°and the maximum temperature rise of bending magnet collimator increases from 10 ℃ to 27 ℃. The results in this paper are helpful to find a balance between increase of power delivery capability and prolongation of beam extraction duration and lay a basis for achieving plasma heating according to the physically experimental requirement of EAST.
description: According to EAST’s experimental plan, the long pulse and high power operation of neutral beam injector (NBI) is the requirement for EAST. In this paper, the operation range of beam perveance is adjusted from 1.9~2.5 μP to 2.5~3.3 μP through changing the voltage ratio of gradient grid/ plasma grid from 0.84 to 0.78. The thermal analysis of beamline heat load components shows with the decrease of the voltage ratio of gradient grid/ plasma grid from 0.84 to 0.78, the maximum neutral beam power deposition on the calorimeter increases from 825 kW to 950 kW when accelerating voltage is 50 kV. The results show that the minimum beam divergence increases from 1.25° to 1.32°and the maximum temperature rise of bending magnet collimator increases from 10 ℃ to 27 ℃. The results in this paper are helpful to find a balance between increase of power delivery capability and prolongation of beam extraction duration and lay a basis for achieving plasma heating according to the physically experimental requirement of EAST.
DOI: 10.57760/sciencedb.04008
title: Effects of oxidation on the deuterium permeation behavior of the SIMP steel
title: Effects of oxidation on the deuterium permeation behavior of the SIMP steel

description: Reduced activation ferritic/martensitic (RAFM) steels are the primary candidate structure materials for the blanket in future fusion power plants. In the recent years, a novel 9-12 % Cr modified F/M steel named SIMP steel has been developed. The deuterium permeation behavior of the SIMP steel with and without oxide layer has been evaluated using a gas driven permeation (GDP) device. The permeability of original and oxidized SIMP steel has been derived and compared. In order to characterize the oxide layer, X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy-Dispersive X-ray Spectroscopy (EDS) experiments have been carried out. GDP results show that the SIMP steel has similar deuterium permeability with the CLF-1 steel. The deuterium permeability of the oxidized SIMP steel is lower than that of the original SIMP steel. Heat treatment during the oxidization process has no influence on the deuterium permeability of the bare SIMP steel. The cross-section SEM pictures present that with the increase of the oxidation time, the thickness of the oxide layer is increased. The oxide layers are observed to be porous. The results of XRD and EDS show that the oxide layer mainly consists of chromium oxide and accumulation of chromium can be detected in the surface region. The formation of the chromium oxide in the surface of the SIMP steel could be the reason of the decrease of the deuterium permeability of the oxidized SIMP steel. 
description: Reduced activation ferritic/martensitic (RAFM) steels are the primary candidate structure materials for the blanket in future fusion power plants. In the recent years, a novel 9-12 % Cr modified F/M steel named SIMP steel has been developed. The deuterium permeation behavior of the SIMP steel with and without oxide layer has been evaluated using a gas driven permeation (GDP) device. The permeability of original and oxidized SIMP steel has been derived and compared. In order to characterize the oxide layer, X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy-Dispersive X-ray Spectroscopy (EDS) experiments have been carried out. GDP results show that the SIMP steel has similar deuterium permeability with the CLF-1 steel. The deuterium permeability of the oxidized SIMP steel is lower than that of the original SIMP steel. Heat treatment during the oxidization process has no influence on the deuterium permeability of the bare SIMP steel. The cross-section SEM pictures present that with the increase of the oxidation time, the thickness of the oxide layer is increased. The oxide layers are observed to be porous. The results of XRD and EDS show that the oxide layer mainly consists of chromium oxide and accumulation of chromium can be detected in the surface region. The formation of the chromium oxide in the surface of the SIMP steel could be the reason of the decrease of the deuterium permeability of the oxidized SIMP steel.
DOI: 10.57760/sciencedb.04021
title: Simulation data for "A 12-pole VHF band highly selective high temperature superconducting filter"
title: 仿真数据-"A 12-pole VHF band highly selective high temperature superconducting filter"

description: Filter simulation file 
description: Filter simulation file
DOI: 10.57760/sciencedb.04016
title: Analysis of the characteristics of the plasma of an RF driven ion source for a neutral beam injector
title: Analysis of the characteristics of the plasma of an RF driven ion source for a neutral beam injector

description: Radio Frequency (RF) driven ion source is a very important component of neutral beam injector of the large magnetic confinement fusion device. In order to study the key technology and physics of RF driven ion source for neutral beam injector in China, a RF ion source test facility was developed at Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP). In this paper, a two-dimensional fluid model is used to simulate the fundamental physical characteristics of radio frequency plasma discharge. Simulation results give the relationship among the plasma characteristic (such as electron density, electron temperature) and RF power, gas pressure. In order to verify the effectiveness of the model, the plasma characteristics are investigated using Langmuir probe. In this paper, the experimental and simulation results are presented, meanwhile the possible reasons for the discrepancies between them are given. This paper can help us to understand the characteristics of the radio frequency plasma discharge, and gives a basis for further R&D for RF ion source.
description: Radio Frequency (RF) driven ion source is a very important component of neutral beam injector of the large magnetic confinement fusion device. In order to study the key technology and physics of RF driven ion source for neutral beam injector in China, a RF ion source test facility was developed at Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP). In this paper, a two-dimensional fluid model is used to simulate the fundamental physical characteristics of radio frequency plasma discharge. Simulation results give the relationship among the plasma characteristic (such as electron density, electron temperature) and RF power, gas pressure. In order to verify the effectiveness of the model, the plasma characteristics are investigated using Langmuir probe. In this paper, the experimental and simulation results are presented, meanwhile the possible reasons for the discrepancies between them are given. This paper can help us to understand the characteristics of the radio frequency plasma discharge, and gives a basis for further R&D for RF ion source.