May
12, 1998
(updated January 21, 2003)
APS TECHNICAL UPDATE - 29
Labyrinth Orientation Requirements
Labyrinth orientation on the experiment stations has become a critical issue since more and more stations are being installed on the APS Experiment Hall. Cables and piping are brought into the experiment stations through wall - or ceiling-mounted labyrinths which will eliminate radiation leaking from the stations. The choice of labyrinth orientation has been decided in the past by the users. This decision will remain to be the users' choice as long as the following requirements, as directed by the APS Radiation Physicist, are being met.
1) Side Wall Labyrinths:
Labyrinths mounted on any of the four side walls of the experiment station below beam level, should have the opening facing downwards as shown in Figure 1. Any labyrinths mounted above beam level should have the opening facing upwards.
2) Roof Labyrinths:
Labyrinths mounted on the roof of the experiment station should have their openings facing sideways, inboard or outboard are both acceptable. Figure 1 shows the opening facing outboard.
3) S-Shaped Labyrinths:
In general, are not preferred.
Julie Cross - User Technical Interface
jox@aps.anl.gov
Telephone - 630.252.0592
Updated: October 4, 2007
