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TSU is developing radiation-resistant detectors for the collider

September 30th, 2019 Ksenia Akentyeva

TSU radiophysicists took part in the 35th FCAL Collaboration workshop in Hamburg (Germany). Anton Tyazhev of the Research and Development Center for Advanced Technologies in Microelectronics spoke about the development of radiation-resistant sensors for a collider and the creation of a new semiconductor structure based on gallium arsenide and its properties. Wolfgang Lohmann, the chairman of the meeting, professor at the Brandenburg Technical University, noted the excellent results obtained by the organizations participating in the collaboration over the past six months.

FCAL is a research and development collaboration for detectors. Its members are physicists from 14 institutes in Germany, Japan, the USA, Israel, Serbia, China, and other countries. TSU and the Joint Institute for Nuclear Research (JINR), Dubna are the only representatives of Russia.

The radiation load on the positron-electron (e + e-) collider is very high, so sensors with unprecedented high radiation resistance are needed. TSU and JINR scientists are jointly solving this problem in the FCAL collaboration by enhancing the radiation resistance of the sensors, which will also help increase the speed and service life of the system.
At the last workshop, representatives of all the institutes participating in the FCAL collaboration spoke about their developments. TSU was represented by Anton Tyazhev and Leyla Shaimerdenova of the research and development center Advanced Technologies in Microelectronics.

- We created a multilayer semiconductor structure: we took gallium arsenide, compensated it with chromium, then we added iron there, and we got a kind of layered structure,- Anton Tyazhev said. - We studied the electrical characteristics of this structure and its ability to collect the charge. The results of our experiments will help in further studies of the radiation resistance of these structures.

At the end of the research, these sensors will be used in the interests of the FCAL collaboration.

Provided by Tomsk State University

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