DUNE Far Detector Anode Panel Cathode Panel and

DUNE Far Detector Anode Panel, Cathode Panel, and Field Cage Installation V. Guarino & R. Kmak February 2, 2018

DUNE Far Detector Weekly Installation Goal to Meet Current Schedule • Components will be moved into the Clean Room in sufficient quantities to assemble & install ‘one set’ of panels as shown. A. k. a. ‘ 1/25 TH assembly. • Schedule assumes 4 working days per week with two 10 hour shifts per day (8 hours per shift of actual working time) • Installation time depends on space available, fixtures/tooling, staff available. 2

DUNE Installation – 3 Pedestal Options Considered • Scenario 1: o Original 3. 3 m wide toaster o Not wide enough to get a scissors lift in and be able to turn it. This forces us to use an Almek lift on both sides of TCO beam – scissor lift or Almek block toaster and don’t allow N-S movement. o APA’s have to be removed from crate on pedestal. Have to remove APA’s from crate vertically which dictates ~5. 5 m height to crane hook resulting in ~7 m cleanroom roof height. o APA box cannot be lowered into toaster because Almek in the way and toaster not wide enough to accommodate people and crate o One crew that alternately assembles APA and then CPA/FC. Have to work serially o Estimate ~ 1 working day (2 shifts) per APA or CPA/FC. It will take 5 working days then to construct 1/25 th of detector. Limited time for testing. Current schedule is 4 working days o Toaster not wide enough for platforms/stairs to meet OSHA • Scenario 2: o No pedestal o Crane is lower to allow bridge crane to pass. We still have to resolve how to support cleanroom roof o Toaster wide enough for platform/stairs. Have two means of egress. o Can have 2 crews per shift – one dedicated to the APA and one to the CPA/FC – parallel assembly o Estimate 1/25 th of detector constructed in 3. 5 days with extra time (1 additional shift for testing per APA) in the schedule for testing • Scenario 3: o Toaster increased from 3. 1 m to 5 m wide o Allows scissors lifts to move so we now have scissors lifts on both sides of TCO for access to APA/CPA o Can have 2 crews per shift – one dedicated to the APA and one to the CPA/FC – parallel assembly 3 o Toaster wide enough for platform/stairs. Have two means of egress.

Facility Requirements • Crane • Need 5. 5 m hook height to install 4 m long CPA with rigging. • Need 6 m hook height to remove APA’s vertical out of crate • Need two hoists that can transverse North-South to rotate APA’s. Dual hoists need to be able to get within 1 m of each other • Need north-south coverage for 2 -3 work stations • Cleanroom clear height ~7. 2 m (dictated by crane height and roof truss) and 15 m width • Need class 100, 000 “Gray Room” (Could be achieved with Uni. Strut Frame and plastic sheeting) • Concrete floors and walls sealed for cleanroom • Toaster floor raised to level of cryostat floor to provide access to bottom of detectors and so that scissors lift can reach top of detectors and TCO beam • Need storage space for 1 week of installation underground • Crates need to be stored within the foot print of crane coverage • Need 2 means of egress – elevator and stairwell. 4

DUNE Far Detector Scenario #1 • Original concept with 3. 3 m wide toaster • Limited space for movement Plan View - All Dimensions are Estimated 5

DUNE Far Detector Scenario #1 Elevation View, Looking East to West. All Dimensions are Estimated 6

DUNE Far Detector Scenario #1 7

DUNE Far Detector Scenario #1 1) Half (~6 m) of APA removed from crate 2) Rotated to stand vertically 4) Lowered into Assembly fixture 3) Rotated to align with assembly fixture APA crates are not designed so assuming vertical lift out of crate 8

DUNE Far Detector Scenario #1 1 - Boxed CPA in position. 1/3 panel being raised from crate 2 - CPA panel being lowered into Toaster 3 - CPA panels (6 x 1/3) Assembled at bottom of Toaster 9

DUNE Far Detector Scenario #2 • Pedestal removed • Crates get lowered to floor of toaster • Lower crane possible • APA and CPA work stations can work in parallel • 2 APA work stations allow extra time for testing • 2 means of egress 10

DUNE Far Detector Scenario #2 Footbridge Cavern Bridge Some features and / or components may or may not be shown on subsequent slides for clarity. Overhead Crane Ron Vic Overhead Crane Rails 2 X Gantry Crane Cryostat Upper Clean Room Boundary Access Door (Moved ~3 m East) Dressing Area 11

DUNE Far Detector Scenario #2 Elevation View, Looking East to West. All Dimensions are Estimated 12

DUNE Far Detector Scenario #2 1) Half (~6 m) of APA removed from crate 3) Rotated to align with assembly fixture 2) Rotated to stand vertically 4) Lowered into Assembly fixture 13

DUNE Far Detector Scenario #2 3 - CPA panels (6 x 1/3) Assembled at bottom of Toaster 1 - Boxed CPA in position. 1/3 panel being raised from crate 14

DUNE Far Detector Scenario #3 • 5 m wide toaster – Pedestal reduced from 14. 8 m to 10. 8 m wide • Allows N-S movement in the toaster • APA and CPA workstations allow parallel assembly • 2 means of egress (stairs and elevator) 15

DUNE Far Detector Assembly Area / Clean Room Boundaries Plan View - All Dimensions are Estimated 16

DUNE Far Detector Assembly Area / Clean Room Boundaries Elevation View, Looking East to West. All Dimensions are Estimated 17

DUNE Far Detector Panel Components Staged in Clean Room 18

DUNE Far Detector APA UNPACKING & CONSTRUCTION 1) Half (~6 m) of APA removed from crate 2) Moved over Toaster & rotated to stand vertically 3) Rotated to align with assembly fixture 4) Lowered into Assembly fixture APA crates are not yet designed, assuming vertical lift out of crate 19

DUNE Far Detector CPA UNPACKING & ASSEMBLY 1 - Boxed CPA in position. 1/3 panel being raised from crate 2 - CPA panel being lowered into Toaster 3 - CPA panels (6 x 1/3) Assembled at bottom of Toaster 20

DUNE Far Detector FIELD CAGE UNPACKING & ASSEMBLY FC Removed from crate, being lowered into Toaster 21

DUNE Far Detector FIELD CAGE UNPACKING & ASSEMBLY FC Panels are assembled to CPA array while CPA hangs from TCO beam CPA Panel FC Panel 22

• Scenario #2: • • Conclusion gives the most flexibility for movement and testing 2 APA stations, 1 CPA station – parallel work possible Can achieve schedule goals – allows a shift for testing 2 means of egress • Scenario #3: • • gives flexibility for movement and testing 1 APA stations, 1 CPA station – parallel work possible Can achieve schedule goals – no extra time for testing 2 means of egress • Scenario #1: • • very restricted work space limiting N-S movement 1 combined APA/CPA station Cannot achieve schedule goals – ~6 weeks longer install time No extra time for testing • Schedule Risk by not allowing extra time for testing • Could buffer APAs on shuttle beam inside cryostat for testing. Would require scissors lift in cryostat • Cleanroom roof does not allow overhead movement of cavern bridge crane. • Facility has to seal floors and some walls, provide platform/stairs, provide temporary floor to toaster, provide elevator, provide walkway between pedestal and cryostat and also gantry rail. 23