Beamline

A beamline or beam guidance (often referred to in the German language than English beamline ) is a part of an accelerator physics apparatus of the accelerated particles (eg, electrons or ions) or, for example, the generated synchrotron radiation to a site of use, for example, an experimental setup leads. In research reactors and spallation neutron sources for lines brought out neutron radiation are so named.

An accelerator beam line can only satisfy the forwarding other tasks such as focusing of the radiation. In a linear accelerator the entire structure from the particle accelerator is called a beam line occasionally. Typically, a beam line starts at the radiation source and ends in an experiment or an irradiation space for radiation medicine treatments. A movable beam control that allows the irradiation of a once -bearing patients from different sides, gantry is called ( see, eg, the Heidelberg Ion -Beam Therapy Center ).

Even with high-power lasers, in which the radiation is conducted in a vacuum, is defined as the vacuum - tube system as the beam lines or beamlines.

To achieve a large mean free path and thus do not to interfere with the beam characteristics, and X-ray and particle radiation strong laser radiation are often performed in a vacuum. Therefore beamlines are often composed of vacuum tubes. At large accelerators of high energy they are often laid underground in tunnels to shield undesirable occurring radiations (eg bremsstrahlung or other types of radiation, if any, the beam on the tube applies). Along the beam line of various devices can be arranged, for example:

• Vacuum to maintain the vacuum, and measuring devices for the vacuum system (e.g., pressure)
• Magnets for beam steering and shaping
• Beam interrupter
• ( controllable ) Iris

Especially in X-ray and laser beam lines also following components are installed:

• Deflecting and focusing mirror
• Monochromators
• Panels and column
• Radiation detectors