TPU graduate student receives a double diploma for his X-ray converter study

A graduate of the double degree program High Voltage Engineering and Physics, which is jointly implemented by Tomsk Polytechnic University and Aachen University of Applied Sciences (Germany) defended his master’s thesis. Anton Shevchuk conducted scientific research at R&D Laboratory for Pulse-Beam, Electric Discharge and Plasma Technologies (TPU) under the supervision of scientists from two universities and now will receive diplomas of both Russian and German universities. 

The master thesis was evaluated by the State Attestation Commission chaired by Leading Research Fellow Grigoriy Ozur from the Institute of High-Current Electronics of the Siberian Branch of the Russian Academy of Sciences and representatives of employers. Professor Burhard Mueller represented Aachen University in the Commission, Tomsk Polytechnic University was represented by the supervisor of the program High Voltage Engineering and Physics Associate Professor Sergey Lopatkin from the Division of Materials Science and Ivan Egorov, the research supervisor of the master student, a research fellow at the R&D Laboratory for Pulse-Beam, Electric Discharge and Plasma Technologies.

The graduation work was devoted to the Investigation of dose field of a conical X-ray converter. The graduate student studied the changes in the intensity of the dose field in axial and radial directions in comparison with a conventional planar design of the converter. According to him, the developed converter can be used for the research of materials, devices and biological objects under extreme radiation conditions.

Scientific Supervisor Ivan Egorov says:

‘The thesis describes the work done using modern tools for establishing radiation technologies. This is a sub-microsecond accelerator with a high pulse repetition rate when generating Continuous X-ray radiation. That is an easy-to-operate source of ionizing radiation, which, in contrast to traditional isotope-based sources, can be switched off at any time.

A Bremsstrahlung X-ray converter with variable characteristics of the dose field was studied in the work. By adjusting the target configuration, we achieved an increase in the uniformity of radiation intensity that is useful for volume processing of something, and, on contrary, provided the difference between the central and peripheral areas of the dose field. Such configuration can be useful in studying the effect of ionizing radiation on materials properties. It is possible to obtain the dependence of a controlled parameter of a dose with its significant change during the same experiment.’

Photo: Professor Burhard Mueller (Aachen University of Applied Sciences).

The developed designs of converters allow long-term operation with a high pulse repetition rate. For this, part of Anton Shevchuk’s experiments was conducted at a frequency of 10 pulses per second for about 5 hours. As the graduate notes, such modes can be used for both lab research and practical applications.

The graduate will receive his master diploma from Tomsk Polytechnic University, then, upon completion of all formal procedures, he will be awarded a diploma from the German university.



The DD master program High Voltage Engineering and Physics has been implemented since 2010, the first graduation took place in 2011. Students take a full-time semester in English at the German partner university under the terms of the program.