Abstract:
A device includes sample tray units, a sample tray transporting unit, a sample tray handling unit, and a sample tray radiation stage unit. The sample tray units are configured to load samples. The sample tray transporting unit is configured to carry a sample tray unit to a radiation room. The sample tray handling unit is between the sample tray transporting unit and the sample tray radiation stage unit, and is configured to transfer the sample tray unit on the sample tray transporting unit to the sample tray radiation stage unit or return the sample tray unit on the sample tray radiation stage unit to the sample tray transporting unit. The sample tray radiation stage unit is configured to carry the sample tray unit and move the samples to be irradiated in the sample tray unit to a particle beam radiation area to receive radiation.
Abstract:
The present disclosure provides a solar heat absorber including: an inlet through which a heat collecting medium enters the solar heat absorber; a passage member configured to be fluidly connected with the inlet such that the heat collecting medium enters the passage member through the inlet; and a collection member configured to be fluidly connected with the passage member such that the heat collecting medium enters the collection member through the passage member. In the solar heat absorber according to the present disclosure, the ceramic particles are used as the heat collecting medium. In addition, the present disclosure also provides a solar heat collecting system including the solar heat absorber, and a solar power generation system including the solar heat collecting system.
Abstract:
Embodiments of the present invention provide a heat exchange medium comprising solid particles and a fluid. Embodiments of the present invention also provide a heat exchange system comprising the abovementioned heat exchange medium, a first heat exchanger, a mixing device disposed upstream of the first heat exchanger and configured to mix the solid particles and the fluid of the heat exchange medium and convey the mixed heat exchange medium to the first heat exchanger, a separating device disposed downstream of the first heat exchanger and configured to separate the solid particles from the fluid in the mixed heat exchange medium discharged by the first heat exchanger, a second heat exchanger, and a first conveying device configured to convey the solid particles separated by the separating device to the mixing device after having passed the separated solid particles through the second heat exchanger. In addition, embodiments of the present invention provide a nuclear reactor system comprising the abovementioned heat exchange system. The gas-solid or liquid-solid two-phase flow according to embodiments of the present invention has the following advantages. For example, it has a large thermal capacity, can be used with a low-pressure system, is non-corrosive, and can be processed off-line. The fission reactor according to embodiments of the present invention can be operated safely and reliably at a high power density or at an extremely high power density.
Abstract:
Provided are a respiratory guiding device (100) and method used in respiratory gated ion beam irradiation, the respiratory guiding device (100) comprising: a respiratory signal detecting unit (101), for measuring a respiratory motion trajectory curve during free breathing and deep breathing, and a real-time respiratory motion position signal in the case of guided respiration; a respiratory signal processing unit (102), for modeling free breathing and deep breathing according to an average respiratory cycle and an average respiratory amplitude calculated on the basis of the respiratory motion trajectory curve and setting a preset breath-hold time at the tail end of a function curve of a free breathing model and a deep breathing model to establish a respiratory guiding curve; a control unit (103), for adjusting the magnetic excitation cycle of a synchrotron according to the respiratory cycle represented by the respiratory guiding curve during free breathing or deep breathing, thus synchronizing the magnetic excitation cycle of the synchrotron with the respiratory cycle. The device and method effectively reduce residual motion in a target region within a guided respiration window, and improve irradiation efficiency and precision of an ion beam.
Abstract:
The present invention provides a GPU-based particle flow simulation system and method which includes generating particle information based on particle modeling information inputted from a client terminal, and generating geometric solid information; receiving the particle information and the geometric solid information, determining which GPUs of which computation nodes are to be used based on the number of the particles and the number of idle GPUs in each of the computation nodes; determining which particles are to be processed in which GPUs of which computation nodes based on the determined number of GPUs and a space distribution of the particles, and performing allocation according to the determination result; stimulating particle flow by computing in parallel in the plurality of GPUs a force applied to each particle due to particle collision and thus an acceleration; and presenting a stimulation result. The embodiments of the present invention can implement a virtual experimental simulation of high-density particles, and improve computation efficiency while reducing power consumption.
Abstract:
A device includes sample tray units, a sample tray transporting unit, a sample tray handling unit, and a sample tray radiation stage unit. The sample tray units are configured to load samples. The sample tray transporting unit is configured to carry a sample tray unit to a radiation room. The sample tray handling unit is between the sample tray transporting unit and the sample tray radiation stage unit, and is configured to transfer the sample tray unit on the sample tray transporting unit to the sample tray radiation stage unit or return the sample tray unit on the sample tray radiation stage unit to the sample tray transporting unit. The sample tray radiation stage unit is configured to carry the sample tray unit and move the samples to be irradiated in the sample tray unit to a particle beam radiation area to receive radiation.
Abstract:
The present disclosure provides a solar heat absorber including: an inlet through which a heat collecting medium enters the solar heat absorber; a passage member configured to be fluidly connected with the inlet such that the heat collecting medium enters the passage member through the inlet; and a collection member configured to be fluidly connected with the passage member such that the heat collecting medium enters the collection member through the passage member. In the solar heat absorber according to the present disclosure, the ceramic particles are used as the heat collecting medium. In addition, the present disclosure also provides a solar heat collecting system including the solar heat absorber, and a solar power generation system including the solar heat collecting system.
Abstract:
Provided are a respiratory guiding device (100) and method used in respiratory gated ion beam irradiation, the respiratory guiding device (100) comprising: a respiratory signal detecting unit (101), for measuring a respiratory motion trajectory curve during free breathing and deep breathing, and a real-time respiratory motion position signal in the case of guided respiration; a respiratory signal processing unit (102), for modeling free breathing and deep breathing according to an average respiratory cycle and an average respiratory amplitude calculated on the basis of the respiratory motion trajectory curve and setting a preset breath-hold time at the tail end of a function curve of a free breathing model and a deep breathing model to establish a respiratory guiding curve; a control unit (103), for adjusting the magnetic excitation cycle of a synchrotron according to the respiratory cycle represented by the respiratory guiding curve during free breathing or deep breathing, thus synchronizing the magnetic excitation cycle of the synchrotron with the respiratory cycle. The device and method effectively reduce residual motion in a target region within a guided respiration window, and improve irradiation efficiency and precision of an ion beam.
Abstract:
The present invention provides a GPU-based particle flow simulation system and method which includes generating particle information based on particle modeling information inputted from a client terminal, and generating geometric solid information; receiving the particle information and the geometric solid information, determining which GPUs of which computation nodes are to be used based on the number of the particles and the number of idle GPUs in each of the computation nodes; determining which particles are to be processed in which GPUs of which computation nodes based on the determined number of GPUs and a space distribution of the particles, and performing allocation according to the determination result; stimulating particle flow by computing in parallel in the plurality of GPUs a force applied to each particle due to particle collision and thus an acceleration; and presenting a stimulation result. The embodiments of the present invention can implement a virtual experimental simulation of high-density particles, and improve computation efficiency while reducing power consumption.
Abstract:
Embodiments of the present invention provide a heat exchange medium comprising solid particles and a fluid. Embodiments of the present invention also provide a heat exchange system comprising the abovementioned heat exchange medium, a first heat exchanger, a mixing device disposed upstream of the first heat exchanger and configured to mix the solid particles and the fluid of the heat exchange medium and convey the mixed heat exchange medium to the first heat exchanger, a separating device disposed downstream of the first heat exchanger and configured to separate the solid particles from the fluid in the mixed heat exchange medium discharged by the first heat exchanger, a second heat exchanger, and a first conveying device configured to convey the solid particles separated by the separating device to the mixing device after having passed the separated solid particles through the second heat exchanger. In addition, embodiments of the present invention provide a nuclear reactor system comprising the abovementioned heat exchange system. The gas-solid or liquid-solid two-phase flow according to embodiments of the present invention has the following advantages. For example, it has a large thermal capacity, can be used with a low-pressure system, is non-corrosive, and can be processed off-line. The fission reactor according to embodiments of the present invention can be operated safely and reliably at a high power density or at an extremely high power density.