Abstract: An ion beam facility has a first ion beam system for a first ion type that contains a first ion beam generator and a first ion transport line with at least one first ion switch for one of at least two first irradiation stations and has a second ion beam system for a second ion species with a second ion transport line or is fashioned expandable therewith. At least one of the first irradiation stations also can be operated with the second ion type or the ion transport lines are arranged proceeding essentially parallel to one another. For the expansion, the first ion transport line is conducted along a wall of a building of the ion beam facility and the wall is prepared for openings, so that at least one of the first irradiation stations also can be operated with the second ion type via the subsequently installable, second ion transport line at the other side of the wall, or space is reserved behind the wall for at least the second, subsequently installable ion transport line.

Abstract: An ion beam facility has a first ion beam system for a first ion type that contains a first ion beam generator and a first ion transport line with at least one first ion switch for one of at least two first irradiation stations and has a second ion beam system for a second ion species with a second ion transport line or is fashioned expandable therewith. At least one of the first irradiation stations also can be operated with the second ion type or the ion transport lines are arranged proceeding essentially parallel to one another. For the expansion, the first ion transport line is conducted along a wall of a building of the ion beam facility and the wall is prepared for openings, so that at least one of the first irradiation stations also can be operated with the second ion type via the subsequently installable, second ion transport line at the other side of the wall, or space is reserved behind the wall for at least the second, subsequently installable ion transport line.

Abstract: A circuit arrangement for forming the square root of an input signal in at least one quadrant. The input signal is fed to the input of a first differential amplifier, the current outputs of which work on two diodes. The two outputs of the first differential amplifier are also connected to the inputs of a second differential amplifier, from one output of which there is a feedback via a diode to one of the outputs of the first differential amplifier. The collectors of the second differential amplifier work on current sources.