Updates on CENF SB WGCENF Project Meeting 17th

October 2013

M. Calviani on behalf of the CENF SB WG team

2 Updates on CENF SB WG - M. Calviani for the SBWG team

Revision of B755 and B757

17th October 2013

M. Herranz, N. Baddams

3 Updates on CENF SB WG - M. Calviani for the SBWG team

17th October 2013

Increased space to allow for lifting striplines feedthrough with crane

M. Herranz, N. Baddams

Stairwell enclosed to maintain a different ventilation path

Pit for rising systems

4 Updates on CENF SB WG - M. Calviani for the SBWG team

17th October 2013

M. Herranz

Cut at the level of the service pit

5 Updates on CENF SB WG - M. Calviani for the SBWG team

17th October 2013

Decrease concrete thickness in the top part, to compensate for the need of longer concrete beams

L. Faisandel

6 Updates on CENF SB WG - M. Calviani for the SBWG team

17th October 2013

!Fixes problem with trench integration! L. Faisandel, S. Girod

7 Updates on CENF SB WG - M. Calviani for the SBWG team

CE status

Reaching an almost stable configuration with the presently available information After CV feedback on integration we might

proceed either to slightly revise it or not --- 2D & 3D synced

Need to revise implementation in EDMS Clarification of deadline for specification for

preliminary technical drawings needed! Naming of the various accessible underground

areas launched within GS (yesterday) Will be important to univocally associated naming

to different areas (for ventilation & safety assessment)

17th October 2013

8 Updates on CENF SB WG - M. Calviani for the SBWG team

Integration update

Discussions with K. Kershaw concerning the applicability of the ITER Remote Handling Code of Practice for perfect vertical movement Idea is to improve the handling of the initial

horn/reflector support structure Double layer of iron:

Facilitate reduction of streaming Waste zoning and dismantling will benefit (see link)

Two solutions under investigations: Closed box (see later) Open box (not analysed still in detail)

17th October 2013

9 Updates on CENF SB WG - M. Calviani for the SBWG team

17th October 2013

S. Girod, K. Kershaw

1. Double block, 120 cm height, 80 cm width

2. “simpler” shape with respect to previous versions

Alignment and support rods

CLOSED BOX

10 Updates on CENF SB WG - M. Calviani for the SBWG team

17th October 2013

S. Girod, K. KershawAlignment and support rods

Cooling pipes passage

11 Updates on CENF SB WG - M. Calviani for the SBWG team

17th October 2013K. Kershaw

OPEN BOX

12 Updates on CENF SB WG - M. Calviani for the SBWG team

Radioprotection update

17th October 2013C. Strabel, H. Vincke, K. Zabrzycki

13 Updates on CENF SB WG - M. Calviani for the SBWG team

17th October 2013

C. Strabel, H. Vincke, K. Zabrzycki

14 Updates on CENF SB WG - M. Calviani for the SBWG team

As neutrons are limited, no sky shine effect is to be expected

17th October 2013

@40 m

C. S

trabel, H

. Vin

cke, K

. Zab

rzycki

15 Updates on CENF SB WG - M. Calviani for the SBWG team

Prompt ambient dose rate at CERN fence > 5 mSv/h

17th October 2013

Vertical average = ~20-50 mLongitudinal average up to 200 m

C. S

trabel, H

. Vin

cke, K

. Zab

rzycki

16 Updates on CENF SB WG - M. Calviani for the SBWG team

Target design update

Two solutions for target cooling under consideration 6 mm radius, 100 cm long, graphite PT2020, He-

cooled1. Beryllium single outer casing to prevent graphite

bending with He circulation in interstitial (preliminary results next page)

2. Beryllium double casing with external/internal flow (next in line)

17th October 2013

See A. Perillo-Marcone 3rd CENF SB (link)V. Venturi, A. Perillo-Marcone

17 Updates on CENF SB WG - M. Calviani for the SBWG team

17th October 2013

He cooling pressure @10 bar MaxT for graphite ~600 K Surface graphite T ~350-550 K DT He ~120 K Preliminary results promising

V. Venturi, A. Perillo-Marcone

18 Updates on CENF SB WG - M. Calviani for the SBWG team

Target design update on-going

work Solution 1:

Analyse dynamical stresses Check “stagnant” locations and improve target

shape Analyse downstream window heating Could be limited by high stresses with graphite and

high-T expanding towards the Be external vessel Solution 2:

“safer” solution Larger footprint of the overall target assembly – with

reduced distance if horn neck is kept fixed at 24 mm Both solutions to be presented/discussed in

detail at the next SB WG meeting 6th November17th October 2013

19 Updates on CENF SB WG - M. Calviani for the SBWG team

Ventilation systems upgrade

Volumes of the various areas are now available EN/CV will finalize ASAP the extraction flow rate ... Together with DGS/RP, this will allow DGS/SEE to

provide semi-final impact into environment Following EN/CV proposition at last SBWG

meeting (link), modification of the rising systems

EN/CV draughtsman started addressing dimensions/cotes in the CATIA model – results at the next SBWG meeting

17th October 2013

20 Updates on CENF SB WG - M. Calviani for the SBWG team

SB preliminary risks analysis

S. Hutchins launched the WG during last PTM (link) S. Hutchins and F. Valentini prepared a first APR

table, which will be further discussed at the SB WG and then at the safety WG according to Steve’s plans

17th October 2013

NB: important to name the areas in a common and agreed way – see CE points

S. Hutchins, F. Valentini

21 Updates on CENF SB WG - M. Calviani for the SBWG team

m detectors/Alignme

nt In the next 2 weeks we’ll start addressing

muon detectors Availability from UniGE to collaborate on Si-

detectors technology Need to address timing needs, installation

possibilities, granularity needed, etc. – collaboration with experiment(s)

Sensitivity on target/horn and reflector

alignment Will be analysed in the next to week

(Alfredo/Wioletta), to confirm the need for “mm-class” transversal movement

Will provide also indication on the required spacing between detectors in the two m pits

17th October 2013