1. LBNF status

2. Process to chose 2 SPs Candidates who accepted (vote starts the 27 th ) : Milind Diwan Chang Kee Jung Sanjib Mishra Andre Rubbia Jim Strait Mark Thomson Bob Wilson

3. EFIG activities Accepted : 1 type of cryostats Next: – Define cavern layout – Define cryostat technology (3 options) – Define cryogenics logistics – Define infrastructure (clean room, cranes, access,..)

4. Alternative 1 - (4) 10 kT near Ross Cartoon 4

5. Alternative 3 – 10+30 kT Cartoon 5

6. Cryostat size > 10 kt eff) 6 15 m 14m 15.1m 19 m 26 m Length : 1+0.8+62+0.8+1+1.5+15 = 82.5 m Width : 1+0.8+15.1+0.8+1= 18.7 = 19 m Crown Height : 0.5+0.6+0.8+14+0.8+0.3 +9 = 26 m* * Still need to be optimized Membrane inner volume : 62.0 x 15.1 x 14 = 13’107 m 3 Volume to excavate : 82.5 x 15.1 x 14 = 40’755 m 3 (for simplicity we assume a flat roof, CF engineers to optimize it) Pit dimensions: END VIEW Mexineen area 14m 62 m 82.5 m Mezzanine 9m Top of cryostat steel: 0.5+0.6+0.8+14+0.8+0.3 = 17 m 17 m

7. Cryostat type 3 solutions (all membrane cryostats): warm vessels: - concrete wall attached to the cavern walls - standalone concrete structure (LBNO) - standalone Fe structure (CERN) criteria : safety, schedule, cost, who pays

8. Where the cryogenics

9. Mexineen area 14m 62 m 82.5 m Mezzanine 9m Mexineen area 14m 62 m 82.5 m Mezzanine 9m

10. CDR Discussions ongoing on the layout/structure