The VKX-8311A from Communications & Power Industries is an X-Band Pulsed Klystron that operates at 11.994 GHz. It delivers an average output power of 5 kW and a peak output power of 50 MW with a gain of 48 dB. The klystron has an efficiency of 40% and a duty of 0.009%. It features an integral focus electromagnet and oil insulated gun with included X-ray shielding. This klystron provides high reliability and efficiency along with a proven long-life design and customizable models for specific applications. It has a beam voltage of 410 kV and a beam current of 310 A. The VKX-8311A is available in a liquid cooled enclosure with WR-90 output interface and is suitable for use in particle accelerators.