Radiation damage in video diagnostic device for Wendelstein 7-X

G. Náfrádi, G. Por, D. Bódizs, Sz Czifrus, G. Kocsis, K. Nagy, J. Pálfalvi, T. Pázmándi, A. Szappanos, S. Zoletnik

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We calculated the expected neutron fluence for a year of operation and the total gamma dose for the W7-X stellarator video port using the MCNP code. The irradiation tests proved that our newly developed Sensor Module of a fast and intelligent camera can withstand the expected radiation of gamma rays and neutrons in the sense that it will not loose its ability to work. However, we have to face growing intensity of the dark current of the pixels of the camera, and also flattening the distribution curve till to maximum intensity values. Since this is the background of the picture that means we shall loose gradually the dynamics of the camera during the neutron irradiation. Every break in irradiation tends to return the camera towards the original state. However, while this return seems to be fast at the beginning of annealing, it becomes unstable, looses pace and 6 month after the irradiation we found that the distribution function returned back only approximately to the middle distribution exhibited in Fig.10, i.e. it is still far from the original stage.

Original languageEnglish
Title of host publication35th EPS Conference on Plasma Physics 2008, EPS 2008 - Europhysics Conference Abstracts
Pages2062-2065
Number of pages4
Edition3
Publication statusPublished - Dec 1 2008
Event35th European Physical Society Conference on Plasma Physics, EPS 2008 Combined with the 10th International Workshop on Fast Ignition of Fusion Targets - Hersonissos, Crete, Greece
Duration: Jun 9 2008Jun 13 2008

Publication series

Name35th EPS Conference on Plasma Physics 2008, EPS 2008 - Europhysics Conference Abstracts
Number3
Volume32

Other

Other35th European Physical Society Conference on Plasma Physics, EPS 2008 Combined with the 10th International Workshop on Fast Ignition of Fusion Targets
CountryGreece
CityHersonissos, Crete
Period6/9/086/13/08

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Náfrádi, G., Por, G., Bódizs, D., Czifrus, S., Kocsis, G., Nagy, K., Pálfalvi, J., Pázmándi, T., Szappanos, A., & Zoletnik, S. (2008). Radiation damage in video diagnostic device for Wendelstein 7-X. In 35th EPS Conference on Plasma Physics 2008, EPS 2008 - Europhysics Conference Abstracts (3 ed., pp. 2062-2065). (35th EPS Conference on Plasma Physics 2008, EPS 2008 - Europhysics Conference Abstracts; Vol. 32, No. 3).