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

Dewar

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

Gazo LP Gazo

Gazo

Valve box 163

Valve box 165

He gas panel F

He gas panel F2

B. 163

B. 165

Cryogenic valves

Warm valves

LP

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

HX

MIXMIX

Valve box shield

CD/WU

LN, shield

LHe

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

GHe outlet, warm

2

6

9

1

5

8

7

4

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

Gazo/LP

Line 165/163 pre-cooling

LN

To B. 163

165 Dewar

LHe in

LHe out

LHe in

Cold GHe out

165 valve box

LN

LHe

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

old.

• 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

HX

MIX

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

HX

MIX

GN to atmosphere



LHe filling - external


CB 163

HX

MIX

GN to atmosphere



LHe nominal inlet - external


CB 163

HX

MIX

GN to atmosphere



1.9 K pumping - external


CB 163

HX

MIX

GN to atmosphere



LHe to internal – cool down & filling


CB 163

HX

MIX

GN to atmosphere



LHe internal - nominal


CB 163

HX

MIX

GN to atmosphere



1.9 K circuit - internal


CB 163

HX

MIX

GN to atmosphere



LN shield circuit


CB 163

HX

MIX

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

LP

LPLP

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

HP

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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