Soft X-ray radiation measured by four-segment vacuum photodiode

POSTER

Abstract

A soft X-ray diode is a strong diagnostic tool for system alignment, among others, in capillary discharge experiments, which generate directional soft x-ray radiation, eventually a laser pulse. In our experimental capillary discharge devices we usually used PIN diode or vacuum photodiode (one-segment). These diagnostics are not suitable, mainly because many shots (more than 50) are necessary to find the optical axis. Last year we designed and manufactured a four-segment soft X-ray vacuum photodiode with a golden photocathode, which detects the soft X-ray radiation emitted from our capillary discharge devices in the axial direction. This new vacuum photodiode is capable to locate the soft X-ray laser axis in a few shots (less than 10). The description and the experimental measurement of the four-segment soft X-ray vacuum diode will be presented.

Authors

  • Jiri Schmidt

    Institute of Plasma Physics, v.v.i., AS CR, Za Slovankou 3, 182 00, Prague, Institute of Plasma Physics, v.v.i., AS CR, Za Slovankou 3, 182 00 Prague, Institute of Plasma Physics, v.v.i., AS CR, Za Slovankou 3, 18200 Prague

  • Karel Kolacek

    Institute of Plasma Physics, v.v.i., AS CR, Za Slovankou 3, 182 00, Prague, Institute of Plasma Physics, v.v.i., AS CR, Za Slovankou 3, 182 00 Prague, Institute of Plasma Physics, v.v.i., AS CR, Za Slovankou 3, 18200 Prague

  • Oleksandr Frolov

    Institute of Plasma Physics, v.v.i., AS CR, Za Slovankou 3, 182 00, Prague, Institute of Plasma Physics, v.v.i., AS CR, Za Slovankou 3, 182 00 Prague, Institute of Plasma Physics, v.v.i., AS CR, Za Slovankou 3, 18200 Prague

  • Vaclav Prukner

    Institute of Plasma Physics, v.v.i., AS CR, Za Slovankou 3, 182 00, Prague, Institute of Plasma Physics, v.v.i., AS CR, Za Slovankou 3, 182 00 Prague, Institute of Plasma Physics, v.v.i., AS CR, Za Slovankou 3, 18200 Prague

  • Jaroslav Straus

    Institute of Plasma Physics, v.v.i., AS CR, Za Slovankou 3, 182 00, Prague, Institute of Plasma Physics, v.v.i., AS CR, Za Slovankou 3, 182 00 Prague, Institute of Plasma Physics, v.v.i., AS CR, Za Slovankou 3, 18200 Prague