For accelerator-driven neutron sources applied in Boron Neutron Capture Therapy (BNCT), the directionality of the neutron beam is a critical characteristic, as it directly influences both the penetration depth of the therapeutic beam within tissues and the magnitude of undesired radiation.
We propose a method that combines the gold foil activation technique and the neural network to measure...
Compact Accelerator-driven Neutron Sources (CANS) demonstrate significant potential for applications in both scientific and industrial fields. A critical challenge for further expanding CANS’s applications is to improve the neutron yield, which requires a highly-efficient thermal dissipation ability for neutron target to bear the high power of incident beam. By employing the rotating target,...
Topological defects or solitons are irregularities which occur within continuous fields or ordered states of matter. These defects (points, lines, or surfaces) are characterised by their stability and the fact that they cannot be 'smoothed out' or removed through continuous transformations. In particle physics, the Skyrmion is a topologically stable field configuration originally proposed to...
This study developed a compact accelerator-based neutron source integrating double Einzel-lens focusing and RFQ acceleration. In the LEBT section, dual electrostatic lenses were employed to focus the beam, achieving a 30 keV, 15 mA pulsed beam output within a length of 0.22 meters, meeting the input requirements of the accelerator. A four-vane RFQ operating at 325 MHz was utilized to...
Accelerator-based neutron sources are critical infrastructures in today's scientific research and industrial fields, with the neutron source target being the key component determining the performance of the neutron source. Traditional accelerator neutron source targets typically use homogeneous elemental materials with high neutron yield as the target material. These materials face challenges...
In recent years, the increase in the soft error rate (SER) caused by cosmic ray-neutrons on the ground has become a serious problem due to the miniaturization, high integration, and low power consumption of semiconductor devices. Therefore, it is important to design semiconductor devices considering SER. Estimation of SER for various environments requires the information of the neutron...
Particle accelerator systems are becoming more complex with each new installation, yet reliability remains a fundamental requirement for both industrial and research installations. Ensuring that beams are delivered on time and within specified parameters is essential. While the combination of complexity and high reliability may seem challenging, this can be addressed effectively through...
A neutron generator producing 2.45 MeV neutrons with d-d reaction is fabricated for industrial material identification with neutron activation analysis (NAA). The neutron generator consists of a deuteron plasma source and a Ti-coated Cu target and is expected to produce 108 n/s at maximum operation. The target is supplied with 100 kV bias voltage with 1 mA deuteron at maximum operation. With...
A prototype Canadian compact accelerator-driven neutron source (PC-CANS) is proposed for installation at the University of Windsor. The source is based on a high-intensity compact proton RF accelerator that delivers an average current of 10 mA of protons at 10 MeV to the target. This study can serve as a basis for the design of an initial stage of a new high-intensity compact...
We have been conducting research on non-destructive inspection techniques using neutron measurement for the proactive maintenance of the social infrastructure. RANS-III (transportable RIKEN Accelerator-driven compact Neutron Systems) is under development and responded to on-site needs to the recent global increase of cable-stayed bridge falls and other accidents that have occurred due to water...
The use of neutrons is established since decades and essential for industry, medicine, life sciences and research. Classical neutron sources are mainly neutron generators, with low neutron flux, or research reactors and spallation sources, which are large and cost intensive installations. A cost efficient, effective and compact neutron source could bridge the gap existing and offer potential...
The tantalum cladded solid tungsten is applied as the CSNS spallation targets. A large amount of high-energy gamma rays will be generated by the interaction between incident protons, secondary neutrons and the target materials. Furthermore, the radioactive spallation reaction fragments will also release decay gamma rays. These gamma rays could further produce neutrons through (γ, n) reactions...
With the ongoing miniaturization, high integration, and low power consumption of semiconductor devices, soft errors caused by cosmic-ray neutrons in terrestrial environments have become a concern. The soft error rate in the terrestrial environment can be quantitatively estimated from the soft error rate measured with an accelerator-driven neutron source and the acceleration factor that is...
Small-angle neutron scattering (SANS) spectrometer based on compact accelerator-driven neutron sources (CANSs) faces several challenges: the neutron current is 2~3 orders lower than that of large sources, and the compact size results in stricter constraints between neutron flux and $Q_{\mathrm{min}}$. The grazing-incidence focusing SANS (gif-SANS) at Compact Pulsed Hadron Source (CPHS) of...
