1. DOM assembly.

2. 30-01-20132 KM3NeT collaboration meeting Assembly Edward Berbee The cooling mushroom is put in place with tooling, a minimum amount of Silgel is poured in (applying vacuum etc.) Mounting the penetrator with the BOB- cover, connections to be made during assembly.

3. 30-01-20133 KM3NeT collaboration meeting Assembly Edward Berbee The power board Heatsink pad (brown) must be cut out and thermal compound (white) must be placed underneath the mushroom stem. The cooling stem is bolted on (all pictures are without the glass sphere from this slide on)

4. 30-01-20134 KM3NeT collaboration meeting Assembly Edward Berbee The powerboard is mounted on the cooling mushroom, The Faraday plate is mounted on top of the power board.

5. 30-01-20135 KM3NeT collaboration meeting Assembly Edward Berbee Mount the CLB and connect.

6. 30-01-20136 KM3NeT collaboration meeting Assembly Edward Berbee The small octopusboard is mounted on the cooling stem. As well as the compass board.

7. For the top-hemisphere; The Nano-beacon is mounted in the top-foam core together with 12 PMT’s (with cabling positioned in the right direction) and their lenses. Before pouring in the gel the PMT-support (in this case a foam core) has to be glued “liquid- tight" to the cooling mushroom. 30-01-2013 KM3NeT collaboration meeting Assembly Edward Berbee 7

8. For both hemispheres; Pouring in the mixed Silgel, triangle with lead to hold down the core. 30-01-2013 KM3NeT collaboration meeting Assembly Edward Berbee 8 Top and lower hemisphere after pouring in the gel. Large octopus board is connected to the PMT’s in the lower hemisphere. For the lower hemisphere; The Acoustic Piëzo sensor has to be glued in the lower hemisphere before this step at it’s exact position together with 19 PMT’s (with cabling positioned in the right direction) and their lenses.

9. Vacuum chuck to lower the bottom hemisphere on the top- hemisphere. When almost closed the large octopus board has to be fixed with a screw to the cooling stamp. 30-01-2013 KM3NeT collaboration meeting Assembly Edward Berbee 9

10. This is the moment for the “octopus- fixture”, it has slided in it’s connector and now has to be fixed with a screw. Sealing and taping assembly. Tool to keep the octopusboard fixed in place, a slider positions it in the connector. 30-01-2013 KM3NeT collaboration meeting Assembly Edward Berbee 10

11. 30-01-201311 KM3NeT collaboration meeting Assembly Edward Berbee Mounting the DOM-support (collar) together with the boulder-assy. All the testing necessary has to be implemented in this scheme.

12. Production of DOM’s Assuming 60 strings, 20 Doms per string; 1200 dom’s; - 2.5 days of building for one Dom, so a total amount of 15-20 Fte year (due to starting up) 30-01-2013 KM3NeT collaboration meeting Assembly Edward Berbee 12

13. String assembly Assuming 60 strings, - 8 days of building for one string, so a total amount of 3- 4 Fte year (due to starting up) 30-01-2013 KM3NeT collaboration meeting Assembly Edward Berbee 13

14. Estimation of the total amount of assembly-hours in Fte-years for 60 string DU’s. OM-assembly is incl. electronics. 30-01-2013 KM3NeT collaboration meeting Assembly Edward Berbee 14

15. Sites for assembly; 30-01-2013 KM3NeT collaboration meeting Assembly Edward Berbee 15 Following these estimations we could raise 4 sites with each 2 fte to assemble DOM´s, the moment for preparation of these sites is approaching rapidly. In this way we could assemble 1200 DOM´s in 2 years (60 String/DU´s). String assembly organization to be decided.

16. 30-01-201316 KM3NeT collaboration meeting Assembly Edward Berbee Two assembly-tables for top hemisphere, pmt’s and electronics. Assembly of bottom hemisphere, pmt’s with bases and signal collection board Storage for components, sufficient for one day. Gel-filling for top-and bottom hemisphere + test before filling. Storage-buffer for ready and partly ready products. Test setup for both top and bottom- hemispheres. Assembly of dom’s, simple end check. Packaging and transport. Storage-buffer for empty (rolling) tables. DOM production site