1 10-Jul-03 Ken Bell - Rutherford Appleton Laboratory Dee Installation and Commissioning  Reminder – installation concept (A.Surkov)  Some remarks  Time estimates  Conclusions

2 10-Jul-03 Ken Bell - Rutherford Appleton Laboratory Installation Concept A.Surkov – Autumn 2000  2 EE Dees go to SX5  They are rotated from horizontal into vertical  They are bolted together on the “EE Riser”  Test all 7320 channels, using “mobile” test equipment  EE Riser and 2 Dees lowered, EE+ traverses to UX5 on air-pads  Tower of 4 HF Risers built up in front of HE, carefully positioned  Dummy Dees removed. EE Riser and 2 Dees craned on top  Adjustments: x, y; rotate about {z,y,x} (hydraulics)  Final move in z to HE, insert “dowel pins” & torque the bolts  Connect all services at the patch panels  Test all 7320 channels through to the counting room  If ∼ all OK, remove Dee cradles, dismount EE Riser & HE Risers  Repeat the procedure at the other endcap  Wait for the physics to begin

3 10-Jul-03 Ken Bell - Rutherford Appleton Laboratory Some remarks  Concept has now evolved to allow single Dee installation, e.g. to allow single Dee repair during a shutdown – Good !  The desire for prior surface testing is mine – biased: a) by bitter personal experience b) knowing that activation makes subsequent UX5 repairs difficult  If EB has found no problems after installation, we might skip this…  Debugging/commissioning at a height of 7–11m will not be easy, but other sub-detectors will have already faced & solved this  Mount both Dees, then commission. I don’t want HV & 20kW of LV being commissioned on D1 while D2 is being moved nearby…  We should not forget SE…  Doubling the handling gear would allow greater parallelism between the 2 endcaps, ie would give EE+/– and SE+/– longer to install and commission… Expensive – shift working is cheaper?

4 10-Jul-03 Ken Bell - Rutherford Appleton Laboratory Time Estimates  EE time estimates for installation – from Justin Greenhalgh  First endcap(+): Underground, mounted on HE 5 weeks  First endcap(+): Connect, test, debug 4 weeks  Second endcap(–): Underground, mounted on HE 4 weeks  Second endcap(–): Connect, test, debug 4 weeks  Austin’s V33.0 planning allows EE&SE +/– 6 weeks, 6 weeks respectively (but parallelism  both completed in 8 (=2+4+2) weeks)  Austin’s V33.1 planning allows EE&SE +/– 8 weeks, 6 weeks respectively (but parallelism  both completed in 10 (=4+4+2) weeks)  Ignoring SE, V33.1 ==  EE+: 1week Setup, 1w D1, 1w D2, 1w Services, 4w Commission  EE–: 0week Setup, 1w D3, 1w D4, 1w Services, 3w Commission  These times feel challenging, but acceptable…

5 10-Jul-03 Ken Bell - Rutherford Appleton Laboratory Conclusions  EE+ needed for installation in 8 weeks starting 22-Dec-06  EE– needed for installation in 6 weeks starting 22-Jan-07  Need to figure out how to pre-test “everything” beyond the patch panels at the perimeter of the Dees – the only way to reduce the commissioning time  No time for Dee dismount/repair, even if serious problems  So remove cradles as soon as Dees on HE, and profit from better access and liberating the EE Riser for the other endcap  Installing also SE will be “interesting”, eg  1w Setup+, 1w D1, 1w D2, 1w SE+, 1w Services, 3w Commission  1w Setup –, 1w D3, 1w D4, 1w SE –, 1w Services, 1w Commission