AD HALL CONSOLIDATION

PROJECT

Francois BUTINCERN EN/MEF

Grounds for AD hall consolidation project

Future of AD is clearer and deserves investment New AEGIS experiment being prepared, requires

new control room Existing ACE experiment desperately needs a

control room Severe lack of space inside hall 193, no storage

space available so far Visits were prohibited due to safety issues Radiation level needs to be integrated in general

hall occupation policy Numerous problems linked with existing

experiments control rooms (see next slide)

Problems linked with existing control rooms

The radiation level reaches 17 mSv/h on one gangway and up to 8 mSv/h at permanent workplace

Permanent occupation of a controlled area does not conform with ALARA rule

Users eat and drink in control rooms in radiation controlled area (no cafeteria)

Serious potential risk in case of fire, being made of plywood No natural light, breaks the French work code R 235-2 Noise in the barracks was measured up to is 71 dBA (norm is 50 dBA ) The barracks are constantly flown over by objects suspended from the

crane, in particular liquid He dewars, weighing over 300 kg. The roof of the barrack is 1cm of plywood only!

Lack of space for users, no decent meeting facility. The air conditioning systems are obsolete, noisy and rather inefficient.

Their replacement was quoted at 30 kCHF.

Very good case for work inspectors who could easily prohibit exploitation of AD !

Main objectives for AD hall consolidation

SAFETY:1. Assess performance of all safety systems: end 2010 2. Solve all main points of the safety inspection report: March 20113. Find alternatives to crane handling of liq He dewars

VISITS:4. Create conditions so that visits can restart, in a temporary mode: 1st September 20105. Prepare conditions for long term visits (improved itinerary, new emergency exit): Proposal

end 2010, operational mid 2011

STORAGE:6. Find long term storage space in an existing building: 1st July 2010… oups !7. Propose new short/medium term storage hall: proposal end 2010, operational end 2011

CONTROL ROOMS:8. Build a new control room for AEGIS/ACE, and new toilets: Proposal September2010,

operational early 20119. Build new control rooms for all experiments, with cafeteria and meeting room

EXPERIMENTAL AREAS INTEGRATION:10. Suppress gangway over AEGIS, redistribute circulation: Proposal end Sept 2010,

operational March 2011 11. Propose a new EA layout, new space for racks, integrate ELENA: Proposal end 2010,

operational mid 2012 ?

Bat193 – AD – Locaux ExpériencesPré-étude Implantation

Hall ADBâtiment 193

Bâtiment 513

Bâtiment 54Tunnel

Bâtiment 181

Bâtiment 133

New storage bdg

New

contro

l room

s

“New” existing ASACUSA gangway

New gangway

Suppress AEGIS gangway

Create emergency exit

Emergency exit

Cre

ate

Rack sp

ace

on 2

floors

Rack sp

ace

on

2 fl

oors

Rack space on 2 floors

Workshop

Kicker platform ?

ELENA ?

New access

600 m² Control rooms on 2 floors, with toilets, rest room, meeting room

Medium term storage area: 500 m²With lorry access and OTC

Hall ADBâtiment 193

Bldg193 – AD – New control rooms

12

3

45

6

78

1011

12

13

14

151617

2nd Stage:5.Rest room6.Meeting room7.ACE Ccontrol room8.Toilets9.Stairs exit module level 110.Stairs entry module level 211.Toilets12.ASACUSA Control room13.ALPHA control room14.ATRAP control room15.ELENA related control room16.Toilets17.Stairs exit module level 2

1st Stage:1.Toilets2.AEGIS Control Room3.Stairs entry module level14.Technical room

9

New Control Rooms barely visible from anywhere: between 193, cooling towers and bank…

Future pedestrian access door

Difficult to be closer to the hall entrance !

Nice and green environment…

Conclusions

Technical aspects are sound (safety, CE, HVAC, power distrib, networks)

Technical Note submitted to EN management

Will be presented to site committee in November

Phasing considered:1. January 2011: AEGIS/ACE CR+ toilets +

tech room)2. Later: Other CR’s + meeting room +

cafeteria Need green light from management… Next: storage hall… but MUST find

intermediate solution (bldg 133 ???)