Contract no.: 30N/12.01.2023
The project: "The development of innovative solutions and technologies for the manufacturing of advanced laser, plasma and radiation for solving the problems of society"
The phase 11/2024: "The development of methods for the prediction of the disrupțiilor in the plasma of a fusion, through the analysis of the signals, which describe the evolution of the topology of the configuration of the magnetic"
Responsible for this: Dr Teddy CRACIUNESCU, Phd. Edward GREGORY
The term of the conclusion of the phase: 08.10.2024
Abstract:
Commissioning and start-up of new plants tokomak of the major makes it all the more necessary for the development of effective methods for the prediction of the disruptiilor of the plasma to fusion. The tools it would need to be not only accurate, but also able to work with a minimum number of signals, as in the first campaign of experimental systems, it is usually available for only a very limited number of diagnoses. It has been developed a method based on statistical techniques to advanced, for the detection of the changes of the paradigm shift in the time series generated by the system to diagnose the plasma. This method is able to detect the movement of the plasma to the region operating in hazardous, using only the signals of the global signal, diagnostic, which describes the stability of the configuration of magnetic fields and the power of the plasma. The performance of the results obtained meet the requirements of the specific prevention of disruptiilor in the devices, as well as the JT60-SA, and the ITER at the beginning of the functioning of these. The method offers a high rate of correct predictions (about 98%), positives, missed on the order of a few per cent and the false alarms in the order of 10%. The method is able to provide predictions by about 400 ms before the disruption, which is why it's a comfortable, which allows for the termination, in a controlled discharge.
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Contract no.: 30N/12.01.2023
The project: "The development of innovative solutions and technologies for the manufacturing of advanced laser, plasma and radiation for solving the problems of society"
The phase 12/2024: "The realization of the sources of plasma, with the use of in-process materials, and preliminary testing of the functionality of their own – a partial phase"
Responsible for this: Dr Rolo POROȘNICU
The term of the conclusion of the phase: 22.11.2024
Abstract:
In cadrul prezentei faze a fost realizata o metoda de imagistica pentru investigarea turbulentei indusa cu un fascicul de electroni cu energia de 13 keV in plasma complexa (dusty plasma).Identificarea pozitiei fiecarei particule in cadrul unei ferestre a fost realizata aplicand functii de corelatie si interpolare spatiala bi-lineara. Prin tehnica Particle Tracking Velocimetry (PTV) a fost identificata traiectoria exacta a fiecarei particule. Se observa ca pornirea fasciculului de electroni genereaza un flux de microparticulele care creste gradat in primele 50 ms atat in viteza cat si in dimensiune. Dupa ≈100-200 ms se fomeaza doua vortexuri simetrice extinse la intreaga dimensiune a cristalului avand viteze maxime de 12 mm/s in centrul fluxului.
One of the main goals of this phase was to test the operation of the equipment is named as the Source of power for generating the plasma (SAGPR), which was made in the course of the previous stage, in various operating conditions, in accordance with the requirements of the state on the basis of its design. SAGPR has been designed as a piece of equipment out of the laboratory, universal and versatile, with the purpose of supplying electric power to a wide range of devices, plasma generators, which are provided with electrode systems with various sizes and shapes that can be, to some extent, arbitrary.
In the framework of the NILPRP (Laboratory of Plasma Temperature is Low, the group of Processes in the Plasma, because the Material of the Functional Surfaces) has been implemented in the last few years, a new mode of operation of the source is achieved and the metal (W), such as MSGA. Thus, in our experimental conditions-specific, plasma is the source of the creeping out through the aperture of the output, along with the nanoparticles. Experiments with primary setup is a critical component of the operation MSGA-JET: for certain values of the parameters, the plasma has an unstable character, the inadequacy of the processes for the synthesis of nano-materials. At this stage it was carried on the research of the way the MSGA-JET. Results of the laboratory tests have led to the identification of the range of the parameters for this operation, stable source of MSGA-JET. These activities correspond to the level of maturity of the technology's TRL 3. The identification of the scope of the operation is stable to the source of the MSGA-JET allows for the further development of the method for the synthesis of nanomaterials.
It has been designed and tested for the source of the plasma at the atmospheric pressure of the jet, with a double shot below and postdescărcare for the synthesis of nanocomposite materials, which provide independent control of the composition of the matrix polymer of the type of polysiloxane, and that the concentration of the metal in the structure.
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