1. CENF target facility civil engineering specifications – summary M. Calviani (EN/STI) for the CENF-SBWG team Neutrino Platform Meeting 30 th October 2014

2. Status  CENF target facility civil engineering specification document approved and released 29 th October 2014  EDMS 1416787 (SPS-LCENF-ES-0001) EDMS 1416787 30 October 2014M. Calviani - Neutrino Platform meeting2 CERN-0000096740

3. Status  Drawings associated (CERN-0000096740):  General cuts of the installation:  EDMS 1421022 (SPSLCENF0001) EDMS 1421022  EDMS 1421025 (SPSLCENF0002) EDMS 1421025  EDMS 1421024 (SPSLCENF0003) EDMS 1421024  Implantation of the facility on the Prevessin area:  EDMS 1427024 (CENFCE-107550002) EDMS 1427024  To be completed by GS/SE (connection of GT26 tunnel and road access for 7% slot compatibility) 30 October 2014M. Calviani - Neutrino Platform meeting3

4. 30 October 2014M. Calviani - Neutrino Platform meeting4 https://edms.cern.ch/file/1416787/1.0/SPS-LCENF-ES-0001-10-00.pdf https://edms.cern.ch/document/1427024/0

5. 30 October 2014M. Calviani - Neutrino Platform meeting5 https://edms.cern.ch/file/1416787/1.0/SPS-LCENF- ES-0001-10-00.pdf

6. Plan with ARCADIS  According to discussion with GS/SE, the work with ARCADIS could start by beginning of December  … but we need to clarify the scope  And check whether the present CE requirements meet what has been requested in the contract 30 October 2014M. Calviani - Neutrino Platform meeting6

7. Priorities for the CE study with ARCADIS 1.Review the 2D drawings with the appropriate sizing  Floor loadings, supporting foundations, seismic considerations, under pressure requirements, etc. 2.Construction methods and compatibility with existing infrastructure (see chapter 2.6 of the spec.) 30 October 2014M. Calviani - Neutrino Platform meeting7

8. Priorities for the CE study with ARCADIS 30 October 2014M. Calviani - Neutrino Platform meeting8 3.Analyse in detail the water ingress/egress issue, proposing solutions for the problem (see chapter 3)  Protection against water ingress  Against rainwater, collected before entering geomembrane  Protection against uncontrolled water egress  To be collected in dedicated sump areas before touching zone outside geomembrane  Implement geomembrane/geotextiles, location based on activation studies (see SPSLCENF***)  Design collection drains (inspectable after operation)

9. Conclusions 30 October 2014M. Calviani - Neutrino Platform meeting9  Detailed CE specifications have been prepared (and approved) for the CENF target facility  EDMS 1416787 (SPS-LCENF-ES-0001) EDMS 1416787  Considering the no-go for CENF construction at this stage, we should decide at which level of detail we proceed with ARCADIS in the design phase  Support drawings are essentially ready, so discussions could/should start ASAP