WP F/L Dom production. KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef22/06/20121

WP F/L 22/06/20122KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef 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

WP F/L 22/06/20123KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef Placement of the foam core on the assembly table. positioning of 19 PMTs with bases in the foam core. Connection of the PMTs to their signal collection board. Placement, cleaning of the hemisphere on the assembly table. Gluing the piëzo-acoustic sensor to the hemisphere. Placement of the foam core with PMTs in the hemisphere. Testing Out-gassing and pouring the gel between the hemisphere and the foam core, harden for 8 hours Total amount of assembly time for this part; ~5 hours Assembly of bottom sphere half.

WP F/L 22/06/20124KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef Placement of the foam core on the assembly table. positioning of 19 PMTs with bases in the foam core. Connection of the PMTs to their signal collection board. Placement, cleaning of the hemisphere on the assembly table. Gluing the piëzo-acoustic sensor to the hemisphere. Placement of the foam core with PMTs in the hemisphere. Testing Out-gassing and pouring the gel between the hemisphere and the foam core, harden for 8 hours. Total amount of assembly time for this part; ~5 hours Assembly of bottom sphere half.

WP F/L 22/06/20125KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef Placement, cleaning of the hemisphere on the assembly table. Mounting a EO penetrator. Gluing of the cooling mushroom to the glass hemisphere. Mounting the converter board and connect to the penetrator. Mounting auxiliary boards on the storey logic board. Gluing of the “nano-beacon” to the hemisphere. Connection of the storey logic board with compass and tilt-metre to the power converter board, and the “nano-beacon” to the auxiliary board. Mounting storey logic board on the cooling mushroom. Fibre splice of readout fibre. Total amount of assembly time for this part; ~3 hours Assembly of top sphere half / 1.

WP F/L 22/06/20126KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef Assembly of top sphere half / 2. Placement of the foam core on the assembly table. Positioning of 12 PMTs with bases and pressure gauge in the foam core. Connection of the PMTs to their signal collection board. Total amount of assembly time for this part; ~1.5 hours

WP F/L 22/06/20127KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef Assembly of top sphere half / 3. Placement, cleaning of the hemisphere on the assembly table. Placement of the core over the stem of the cooling mushroom. Mounting of the signal collection board on the cooling mushroom. Testing Out-gassing and pouring the gel between the hemisphere and the foam core, harden for 8 hours. Total amount of assembly time for this part; ~5 hours

WP F/L 22/06/20128KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef Assembly of the two hemispheres. Reduction of pressure to 700mbar abs Sealing and taping assembly, attachment of the storey connection ring. Testing Assembly time for this part; ~5.5 hours Assembly of the two sphere halves.

WP F/L String-Du assembly. KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef22/06/20129

Loading the frame Top down: first 5 buoy-spheres in the centre, followed by optical modules Cable and ropes are wound in the parallel cable trays Optical modules are attached to ropes and inserted in the launcher during winding 1022/06/2012KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef

WP F/L 22/06/201211KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef Dom ’ s are tested and ready for deployment. VEOC is tested and ready for deployment. Hoist the LOM out of its crate by means of a crane and the three designated steel cables which should be in the LOM during storage. Place LOM with a crane, position 2 pointing to the front side just above its position in the rotation frame (standing at the front side the driven side is at the right). Mount the Iron bracket at the right side of the LOM (the driven side) Mount the Aluminum bracket at the left side of the LOM (the rotating side), be sure the 2 holes are in line! Lower the LOM until it is aligned as much as possible. Turn in the spindle axis at the driven side completely. Align once more the aluminum bracket with the crane and turn in the spindle axis at this side. Mount a net rope length of 490 mm at the top bouy A, 770 mm at one side of the top bouy B, 770 mm at one side of the top buoy C, and 340 mm at one side of the top bouy D. Rotate position 2 to the front and put sphere A on the bottom of the central chamber with the rope pointing to the exit. Put top buoy B on the bottom of one of the three side chambers and connect the rope of A to the remaining eye of B. LOM user manual in steps;

WP F/L 22/06/201212KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef Put top buoy C on the bottom of one of the three side chambers and connect the rope of B to the remaining eye of C. Put top buoy D on the bottom of one of the three side chambers and connect the rope of C to the remaining eye of D. Put top buoy E in the remaining space of the central chamber and connect the rope of D to the remaining eye of C. Connect the two vertical cables to the topbouy E. Place a high table (approx. 120cm) or similar in front of the LOM. Rotate front side downwards 1/8 rotation to position 1, tension the clamps with the two tension tools and put a DOM on the table on a “ DOM-ring ”. Pull a rope to the edge where it enters the LOM, add another 25 cm end take this point on the rope as the exit-point on the topside of the ear on the DOM, make two times an eight in the ear leave the ear on the bottom side and mount the cover on it (be sure the rope is in the channel completely!)

WP F/L 22/06/201213KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef Do the same on the other side of the DOM. Push DOM 1 in the LOM and release the tensioners carefully be sure you lift the DOM until both sides are fetched in the clamps. If the clamps are in a vertical position the DOM is in its place, if not it probably should be turned a bit until the bottom side of the DOM points towards the middle of the LOM, in this position the clamps should be in a vertical position. Mount the end of the VEOC at the DOM and guide it to one of the two tracks, leaving enough slack. Start rotating the LOM, front side upwards, and guide the ropes and VEOC in the tracks for 2 4/8 turn and mount a spacerbar between the two ropes, make another 2 3/8 turn and repeat step for DOM 2-8.

WP F/L 22/06/201214KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef After mounting DOM 8 make a further 4/8 turn (DOM 4 will then be at the front side), you now have completed the “ red ” track. Guide the ropes and VEOC in the black track (on position 4), in the direction of 18, be aware of which rope is guided on top of the other. Rotate, front side upwards, a further 4/8 rotation, guiding ropes and VEOC in the black track, again to position 8 and change track to the blue track (the same rope on top as in line 25) in the direction of position 14 and fix ropes and cable. Turn front side upwards 2/8 (8 is on top) end lift the LOM until the “ not driven ” side can lightly be screwed out, then screw out the other side. Rotate LOM 120 degrees (13 in front) and repeat step 4-9. Rotate front side upwards 2 rotations and mount a spacerbar, then rotate another 1 5/8 rotation to position 9. Repeat step for DOM 9-14 (between DOM 11 and 12 there is 1/8 turn less length). After mounting DOM 14 make a further 3/8 turn (DOM 4 will then be at the front side), you now have completed the “ blue ” track. Guide the ropes and VEOC in the red track (on position 4), in the direction of 5, be aware of which rope is guided on top of the other. Rotate, front side upwards, a further 4/8 rotation, guiding ropes and VEOC in the red track, again to position 8 and change track to the black track (the same rope on top as in line 25) in the direction of position 20 and fix ropes and cable. Turn front side upwards 2/8 (8 is on top) end lift the LOM until the “ not driven ” side can lightly be screwed out, then screw out the other side.

WP F/L 22/06/201215KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef Turn front side upwards 2/8 (8 is on top) and rotate LOM 120 degrees (19 in front) Rotate front side upwards 2 rotations and mount a spacerbar, then rotate another 1 5/8 rotation to position 15. Repeat step for DOM (between DOM 17 and 18 there is 1/8 turn less length). Rotate for another 17 1/8, mounting a spacerbar approximately every 2 turns. pos. 8 then is on top, pos. 19 in front, rope length (up to pos. 19) then is meter.

WP F/L Open/closing box 22/06/201216KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef Work in progress; Development of testbench for DOM’s

WP F/L Elevator for up/down of sphere 22/06/201217KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef

WP F/L details Elevator up To (re)place the sphere Elevator down For measurements Blue LED pulser In front of PMT 22/06/201218KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef

WP F/L 22/06/201219KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef Production of mPMT DOMs Assuming 60 strings, 20 Doms per string; 1200 dom’s; days of building for one Dom, so a total amount of Fte year (due to starting up)

WP F/L 22/06/201220KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef 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)

WP F/L 22/06/201221KM3Net meeting 2012 Erlangen - Edward Berbee - Nikhef Estimation of the total amount of assembly-hours in Fte years for 60 string DU’s. OM-assembly is incl. electronics.