Development of a coating to prevent discharges in X-ray tubes

• Research unit: INNOSUISSE
• Project number: 19114.1 PFSATW-NM

Short description (German)

T-2016-015: Entwicklung einer Beschichtung zur Verhinderung von Entladungen in Röntgenröhren

Short description (English)

Development of a coating to prevent discharges in X-ray tubes

Abstract (German)

Electrical discharges are a major challenge in high power x-ray tubes. To prevent this, a coated ceramic insulator between anode and cathode is used. The coating has the function to minimize secondary electron emission and must have a very small but defined conductivity to minimize the buildup of charges which otherwise would unload in disastrous discharges whit the result of a damaged X-ray tube. The development of a useful and good characterized coating is the main goal of this project.

Abstract (English)

Electrical discharges are a major challenge in high power x-ray tubes. To prevent this, a coated ceramic insulator between anode and cathode is used. The coating has the function to minimize secondary electron emission and must have a very small but defined conductivity to minimize the buildup of charges which otherwise would unload in disastrous discharges whit the result of a damaged X-ray tube. The development of a useful and good characterized coating is the main goal of this project.