# Presentation: 506531

## ESS CONVENTIONAL FACILITIES

** **
**MAIN MILESTONES OF THE PRESENT STUDY PHASE**
**PROGRAMME OF WORK AND ORGANISATION**
**MAIN TECHNICAL OPTIONS**
**MASTER PLAN DRAWING**

## Site

- 	Reference site for programme, costs and schedule
- 	Site characterization
- 	Site preparation for construction (earthwork, roads, ...)

- SCOPE OF THE CONVENTIONAL FACILITIES

**Buildings**
- 	Front End / Linac tunnel / Klystron buildings
- 	Ring buildings
- 	Targets and instruments buildings
- 	Beam stop buildings
- 	Central helium and RF test buildings
- 	Central laboratory and office building

**Infrastructures**
- 	Water systems and associated networks (potable water, cooling, ... )
- 	HVAC
- 	Electricity
- 	Computer network

## Conventional facilities can easily represent about 30% of the total project budget 

- Conventional facilities can easily represent about 30% of the total project budget
- and are inevitably on the critical path of the project time schedule

- To control conventional facilities costs  and project schedule we have to :

-   - identify main possible technical options for each conventional facilities subsystem
- - associate to each of them a cost estimate as precise as possible
- - adopt the most economical (combining investment and operation) technical options
- - analyse the impact on the planning of construction

- We use : SNS, CONCERT and Vol III of ESS programmes

## May 2002 : Final proposal and presentation in Bonn

- January 2002 : Document on :
- ·    technical options with the evaluation of the TAC,
- ·    timescale for the Conventional Facilities, from the design to the start
- 	 of operation, with the evaluation of the TAC,
- ·    cost estimates
- submitted to Council for approval.
- January 2002 : Presentation to the TAC of main technical options

- THE MAIN MILESTONES OF THE PRESENT PHASE OF STUDY

## SNS AND CONCERT EXTRAPOLATIONS

- SNS Interface design parameters

- ESS UTILITIES LOAD SUMMURY

- RF calculations by SACLAY for ESS 10 MW

- ELABORATION OF
- TECHNICAL OPTIONS

- Schemas

- Files

- PROGRAMME OF WORK AND ORGANISATION

## 1) ESS LOAD SUMMURY

- 2) FILES
- 4) WBS
- 3) SHEDULE

- EXAMPLES OF DOCUMENTS

##  CONCERT option : Linac tunnel is just buried and covered by earth material 

- (3 m at the beginning to 7 m at the end)
- SNS option : same thickness of earth material all along the linac tunnel

- LINAC TUNNEL  : TECHNICAL OPTIONS

**Drawbacks : Variation of compression along the linac **
**	****       ****but we assume that quasi linear settlement is not a problem**

**Advantages : Limitation of earth material quantity**

## LINAC TUNNEL TECHNICAL OPTIONS (cont’d)

- SNS type option : Klystron building very close to linac tunnel

- Advantages : - wave guides length is 	          limited
- 	       - schedule : possibility to build 	         linac tunnel and klystron 	         building independently and 	         in parallel

- Drawbacks : - retaining wall results
- 	        in increase of cost
- 	        in comparison with
- 	       CONCERT option

- 5 m

- 8 m

- Linac

- tunnel

- Klystron building

- Wave

- guide

- Retaining wall

- Chase

- 1.5 m

- 5 m

- 7 m

##  CONCERT option : light metallic structure for the klystron building

**Advantages : **
**- limitation of the klystron building cost**
** ****- schedule : possibility to build linac tunnel and klystron building independently and in parallel**

**Drawbacks :Length of the wave guides is very long**

- LINAC TUNNEL  : TECHNICAL OPTIONS (cont’d)

- Linac tunnel

- Earth material

- Klystron building

- Wave guide

- Metallic siding

**11 m**

**8 m**

**9 m**

**7 m**

- 5 m

- 3.5 m

## Linac Tunnel

- 1,5 M

- 0,6 m

- 5m

- Retaining wall

- 1 W/m  and 0.5 microSv/h

- SIZE OF THE RETAINING WALL FOR RADIOLOGICAL PROTECTION

## LINAC TUNNEL TECHNICAL OPTIONS (cont’d)

**	****       ****- need less surface than in other options ****	****	****         because no earth material**
**	****       ****- constant earth compression of the tunnel**

- LOS ALAMOS type option : linac tunnel buried deeply, ~ -8 m, and klystron
- 			building on top

**Drawbacks : - water table must be deeper than in other ****	****	****        options**
**                      ****- HEBT, ring, RTBT and may be Front End ****	****	****        building, buried deeply**
**	****        ****at the same level than the linac, so may be ****	****        more expensive than in other options**
**	****      ****- schedule : impossible to build linac**** ****tunnel ****	****        and klystron building in parallel**

## LINAC TUNNEL TECHNICAL OPTIONS (cont’d)

- « No buried construction » option :  linac tunnel on the floor and at the same ground level as klystron building

- Advantages :
- - water table less problematic
- - no trench

- Drawbacks :
- -more earth covering to shield
-  linac tunnel but also HEBT,
-  ring, RTBT
- -uneasy connection of wave guides
-  and pipes from klystron to linac building

- Considered as unattractive

## LINAC TUNNEL TECHNICAL OPTIONS (cont’d)

**LOS ALAMOS and « NOT BURIED LINAC »options are not retained**

**CONCERT AND SNS OPTIONS :**
**Lower cost for klystron building in case of CONCERT option but length of wave guides longer than in SNS option so we need to study in more details these two options in order to have a better estimate of the cost difference**

**Construction and cost will depend on the characteristics of the underground.**

**Extra costs resulting from deviations from the reference site to be added to the site premium (additional contribution from the host country)**

## Chases connecting  linac tunnel to klystron building 

- LINAC TUNNEL TECHNICAL OPTIONS (cont’d)

**We propose the ****same chase concep****t as that of**** SNS**

**In these chases we find **
**the following equipment :**
**	****wave guides,**
**	****chilled water pipes **
**	****electrical cables**

**These parts are fixed on a special support**
** ****This support is put into the chase**

**Inside a chase, wave guides are cooled down by chilled water pipes**

- 5 m

- 8 m

- Linac

- tunnel

- Klystron building

- Wave

- guide

- Retaining wall

- Chase

- 1.5 m

- 5 m

- 8 m

- Linac

- tunnel

- Klystron building

- Wave

- guide

- Retaining wall

- Chase

##  Goal : minimize costs and therefore area 

- KLYSTRON BUILDING : TECHNICAL OPTIONS

- 2) The large size of the power supplies : 10 m x 8 m

- 	- difficulty to put Klystrons side by side
- 	- high chaze density

- Two constraints :
- 1)The short distance between couplers in the SC part (average : 2 m)

## Slide 16

## option : 

- - **all equipment are in the klystron building ( RF, power supplies, cooling equipment,**
**HVAC, electronics racks, diagnostics, vacuum control, quadrupole power supplies, etc )**

- KLYSTRON BUILDING TECHNICAL OPTIONS (cont’d)

**klystrons are in a vertical position, side by side**

**-metallic structure with double skin siding**

- -some mechanical equipment like HVAC, DI water system and rf power supplies are in alcoves. This results in a reduction of the building surface

- -utilization of air pads and fork lifts to move klystrons and other loads instead of travelling crane (to reduce the building height)

## POSITIONNING OF KLYSTRON BUILDING and CHL/RF BUILDING

- 35 m

- 30 m

- Alcoves

**Klystron building :  Length = 430 m / Height = 6 m **

- Beam axis

- Front End building

- 40 m

- 30 m

- 35 m

- 37 m

- 62 m

- 25,5 m

- 18,5 m

- CHL/RF building

- >190 m

## 80 m between each access

- 1 truck access at the beginning of linac tunnel by the front end building
- 1 truck access in the HEBT tunnel
- 6 personnel access

**80 m between each access**

## PERSONNEL ACCESS

## Slide 21

## 10 MW High energy linac power distribution

****** ****= 0.86**

****** ****= 0.68**

**10 MW **_**High energy**_** linac power distribution**

- 20 kV

- HVPS
- 4MVA

- 46

- 56

**4**

- 11 klystrons

## HVAC

- Utilization of Air blast radiators to cool raw water
- - Choice of the water pressure and the cooling temperatures values and their variations for process equipment

- Local hvac **or** little plant for offices, laboratories, and test areas
- Air conditioning units distributed along tunnels to keep right temperature when the beam is on
- HVAC from FE an other parts to remove air in the tunnels before coming into (70 mn)

## HVAC (cont’d)

- Temperature in the tunnels with beam : To Be Determined
- Temperature in the tunnels without beam
- after 70mn of ventilation : To Be Determined

- Temperatures in the FE : To Be Determined
- Temperatures in Klystron building : To Be Determined
- Temperature in the ring .... and other buildings : To Be Determined

## BEAM DUMPS

- Linac beam dump : Passive or actif , depend on the power on the beam dump ?

- Injection beam dump :  power on the beam dump ?

- Extraction  beam dump : Passive or actif , depend on the power on the beam dump ?

## RING 

- The same than ESS

## TARGET SHORT PULSE

- The same than SNS extrapolated to 5 MW

## TARGET LONG PULSE

- The same than SHORT PULSE

## MASTER PLAN

- Guest House

- Central Laboratories and offices

- Central Utility Building

- Access

- CHL/RF

- Achromat

- Target Long Pulse

- Target Short Pulse

- Klystron building

- 1300 m

- 750 m

## MASTER PLAN

-  Technical option :
-  RFQ , DTL, SDTL, CCL and SL will be assemble in the shop company, outside the site.
- These components will be installed and tested inside the Front End and Linac Tunnel.
- Justification :
-  To avoid buildings on the site for assembling components (cost reduction) and time reduction for the schedule.

- Building implantation :
- CLO close Target buildings
- Advantages : easy access for users
- Guest house : one module of 60 rooms at the beginning of the operations, an other 60 rooms the third year and an other the seventh year
- 	Avantages : construction cost reduction