ELECTRON GUN

The ELECTRON GUN consists of a HEATER and a CATHODE to generate electrons, a CONTROL GRID to control brightness by controlling electron flow, and two ANODES (FIRST and SECOND). The main purpose of the first (FOCUSING) anode is to focus the electrons into a narrow beam on the screen. The second (ACCELERATING) anode accelerates the electrons as they pass. The control grid is cylindrical and has a small opening in a baffle at one end. The anodes consist of two cylinders that contain baffles (or plates) with small holes in their centers.

CRYSIS is an ion source of EBIS-type (Electron Beam Ion Source) and is the injector to CRYRING. One important feature of an EBIS is that it can produce highly intense electron beams with high current densities. By colliding with the atoms the electron beam ionizes the gas. An ionization process is when an electron initially bound to the atom is removed. When the desired charge state is reached the ion beam is transported through the beam line system to the storage ring or to some other experiment. This type of ion source is designed specially for production of ions with very high charge states.