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Metrology System to Beam Combining Facility ICD INT-406-VEN-0012 v0.4.doc Page 9 of 16

10.3 Laser cooling

To prevent uncontrolled air exchange between inner and outer BCA an insulated enclosure will be placed

over the laser head and air introduced into it so that it can enter the cooling ports of the head. The exit port of

the laser will connect to the outside of this enclosure to ensure that air is forced through the laser head.

A conduit system to bring air from the outer BCA into the laser head enclosure and remove it again is to be

installed above each laser location at either end of the optical table. The interface details for this enclosure

are yet to be determined. [TBD]

11 Appendix

Figure 1: showing the minimum size and preferred position of metrology table.

Figure 2: showing the relationship of the metrology table surface to the incoming science beam

height and the nominal metrology table height above the inner BCA floor.

Figure 3: the Agilent single channel cabling arrangement

Figure 4: the Agilent

10881C laser head cable

Figure 5, 6 & 7: Specifications for the Agilent 5517FL and 5517GL laser heads.

Figure 8 System Grounding considerations

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Eurotech APOLLO 1U ICE Bedienungsanleitung Seite 9