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MOPB023 |
A Compact X-ray Light Source Based on a Weak-focus Accelerator | |
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| The X-ray provided by the synchrotron radiation light source becomes an irreplaceable scientific research mean for physics, chemistry, biology, medicine, and other fields. Although there are already many light source facilities around the world, and some new advanced light source facilities are being designed and built, the limited experiment time, high construction cost and huge building scale limit the number of light sources. Accelerator scientists are working on developing new compact light sources. The compact storage ring based on the weak focusing principle is a potential X-ray light source. Desktop Hard X-ray Source is a novel X-ray light source based on compact accelerator. DHXS is composed of an injector, a beam transmission line, and a compact storage ring. The injector of DHXS is a linac, which can provide beam current of about 200mA. The compact storage ring uses a complete combination functional magnet as the main magnet, with a beam orbit radius of only about 15cm. Now DHXS has completed the design, and the entire device size is about 2m * 3m. The preliminary calculation results show that the photon flux can reach above 1E9, and the prototype is under manufacturing. | ||
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MOPB024 |
Accelerator-Based High-Throughput Material Physical Property Measurement System in Terahertz Near-Field | |
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| Superconductor, multiferroic material, giant magnetoresistance etc.,are keystones to information, energy, optoelectronics industries. Inside the THz band, their common characteristic properties are all related to the THz complex optical constant, and they also strongly interact with the ultrafast THz waves, resulting in many fascinating phenomena in physics. Applying the combinatorial material synthesis technique, a key step in the Materials Genome Initiative (MGI) project, requires a novel ‘step-less¿high-throughput characterization method that is still unavailable today, mainly because of the diffraction limit of the THz waves. In this program we will develop a new high throughput material characterization system under the THz near-field, integrating with varying magnetic, temperature and electrical fields. The system will directly measure the complex dielectric constant tensor, which correlates directly to the superconductor bandgap, magnetoelectric coupling, resistance and dielectric constant in the THz band, and plasmonic resonance. This system will be useful in the MGI project to realize highly efficient material screening, and will thus very helpful for finding new materials. | ||
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