Technical Design Report Super Fragment Separator

DRAFT
The locations for the different detection systems are shown in Figure 2.4.78. The special conditions
in the target area require a design of the detection system that takes into account the radiation level
of the area; it is foreseen to be able to run for about one year without opening the section from PF0
to PF1. Generally we foresee UHV material although a pressure of 10 -7 mbar is sufficient. The
choice of the particular detector systems is driven by the idea of benefiting from the various developments
that are currently done in the detector laboratory (e.g. diamond detectors) and accelerator
division (beam diagnostic systems) in conjunction with the FAIR project.
Figure 2.4.78: Detector systems and positions in the Super-FRS. The particular areas and setups are
described in the text.
Radiation environment
The envisaged intensities of up to 10 12 uranium ions / spill are demanding for the design of detector
components in the first part of the Pre-Separator of the Super-FRS. Readout electronics has to be
placed away from the beam axis for at least 1 m (in y-direction), where the flux stays below 10 15
neutrons/cm 2 (see also Figure 2.4.79). The end of the Pre-Separator (PF4) denotes the area where
ion intensities are down to 10 9 /s, thus, being comparable with the rates at the present FRS.
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