V. Benda - indico.cern.ch · 15-GHe return internal 16-GHe return, external HX MIXMIX Valve box...

V. Benda

6/19/2017 163/165 upgrade - Fresca 2, CRG/VB 2

B163 main requirements

• To be recuperated 163 cold box

Fresca

7 Cryostats including their distribution line and 1.9 K pumping system

• New infrastructure 163 combined valve box

Related cryogenic lines• Combined line for Fresca, Fresca 2, Cryostats

• Lines to cold box

• 1.9 K pumping line including heater

• 163/165 transfer line

New 1.9 K pumping unit, 2.3 g/s @ 10 mbar

GHe panel for Fresca 2 and Fresca including He guards

12 000 l LHe Dewar instead the existing 6 000 l LHeDewar if approved

B. 163 current state

B. 163, elements to be recuperated MEYLSQLH0002

7 cryostats including the cryogenic

line and 1.9 K pumping system

Fresca

Cold box

B165 main requirements

• To be recuperated 165 cold box

165 Filling station

• New infrastructure 20 000 l LHe Dewar replacing the existing 5 000 l LHe

165 combined valve box

Related cryogenic lines• From 165 CB to 165 combine valve box

• From 165 combined valve box to the Filling station

• From 165 combined valve box to Trailer Dewar

• 163/165 transfer line

B. 165, elements to be replaced

Common 165 & 163, LN distribution

• Valve box

• Related cryogenic lines

Preliminary simplified flow scheme

163 Dewar6 000 l

165 Dewar 20 000 l

CB 163 CB 165

Trailer Dewar

Fresca Fresca 2

Filling station

7x small cryostats

LPGazo

Gazo LP Gazo

Valve box 163

Valve box 165

He gas panel F

He gas panel F2

B. 163

B. 165

Cryogenic valves

Warm valves

B. 163

B. 165

163 Combine valve box

Combined line: Fresca + Fresca 2

Gazo/LPGazo/LP

Gazo/LP

CB 163

HP GHe

To 7 cryostats

To 165 Dewar

LHe in

LHe out

LHe in

Cold GHe out

Fresca 2 Fresca1.9 K

pumping line

163 LHe Dewar

163 valve box

1 2 3 4 5 6 7 8 9 11 12 13 14 15 16

Fresca 2

1-GHe return, external2-GHe return, internal3-LN in, shield4-CD/WU, external down5-LHe in, external up6-LHe in, internal7-1.9 K LHe in, external8-1.9 K pumping, external9-1.9 K pumping, internal

Fresca

11-1.9 K pumping, internal12-1.9 K pumping, external13-LHe in, internal14-LHe in, external15-GHe return internal16-GHe return, external

MIXMIX

Valve box shield

LN, shield

GHe return

1.9 K pumping

*On an outlet of 7 cryostats LN line continues directly to 163 CB or to LN phase separator and later on to 163 CB (if content of GN is too high).

Gazo/LP

Pre-cooling line

Gazo/LP

22 may 2017

Fresca 2 simplified schema

Internal cryostat

Current lead

External cryostat

Current lead

GHe outlet, warm

Internal cryostat

2-GHe return, internal6-LHe in, internal9-1.9 K pumping, internal

External cryostat

1-GHe return, external5-LHe in, external up7-1.9 K LHe in, external8-1.9 K pumping, external4-CD/WU, external down & filling

165 Combined valve box

CB 165

To filling station

Gazo/LP

Line 165/163 pre-cooling

To B. 163

165 Dewar

LHe in

LHe out

LHe in

Cold GHe out

165 valve box

GHe return

VB shield

Trailer Dewar

B. 165 existing simplified layout

B. 165 proposed preliminary layout

B. 163 proposed preliminary layout 3D,a

B. 163 proposed preliminary layout 3D, b

Extra civil

engineering

required

B.163 combine line at reverse side

B.163 combined line at reverse side, top view

Building 163 equipment

Approximate mass of components:• Dewar ≈ 9T

• Valve box ≈ 3T

• Fresca ≈ TBC (approx. 20 T)

• Fresca 2 ≈ TBC (approx. 20T)

Mass distribution:• Assuming mass is equally distributed over the area of the pit floor.

• Area of pit = 4.85 m * 2.43 m = 11.79 m²

• Total mass ≈ 50 T

• Distributed mass ≈ 4.24 T/m² (limit = 1T/m²)

Conclusion:• The current strength of the floor of the pit should be confirmed as the drawing is

• If the drawing found is correct civil works may be required to strengthen the pit.

R.GUEYDAN - TE/CRG/ME19/06/2017

Cryogenic infrastructure for Fresca 2 in B.163

CB 163

GN to atmosphere

Warm GHe outlet of CLs

Fresca 2 double cryostat 163 combine valve boxCombine cryogenic line

To 7 cryostats

To 165 Dewar

Cool down/warm up - external

CB 163

GN to atmosphere

LHe filling - external

CB 163

GN to atmosphere

LHe nominal inlet - external

CB 163

GN to atmosphere

1.9 K pumping - external

CB 163

GN to atmosphere

LHe to internal – cool down & filling

CB 163

GN to atmosphere

LHe internal - nominal

CB 163

GN to atmosphere

1.9 K circuit - internal

CB 163

GN to atmosphere

LN shield circuit

CB 163

GN to atmosphere

Infrastructure for Fresca 2, optionvalves relocation from main valve box to local distribution valve boxes

Fresca 2, 9 lines Fresca, 6 lines

Fresca 2 distribution valve box, 5 valves

Fresca distribution valve box, 3 valves

163 valve box, 13 valves

To 1.9 K pumping unit

To 163 cold box

To 7 cryostats

To B. 165

163 LHe Dewar

Main combined line, 7 lines

F2 combined line. 4 lines

F combined line, 3 lines

Fresca 2

1-GHe return, external2-GHe return, internal3-LN in, shield4-CD/WU, external down5-LHe in, external up6-LHe in, internal7-1.9 K LHe in, external8-1.9 K pumping, external9-1.9 K pumping, internal

Fresca

11-1.9 K pumping, internal12-1.9 K pumping, external13-LHe in, internal14-LHe in, external15-GHe return internal16-GHe return, external

1 23 4 5 6 7 8 9 15 11 12 13 14 16

Fresca 2 infrastructure - option

Fresca 2 infrastructure - option, top view

Planning

1 week delay in

design phase

V. Benda - indico.cern.ch · 15-GHe return internal 16-GHe return, external HX MIXMIX Valve box...

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