Atlas Inner B-Layer CO 2 cooling system (Can we use Marco?) 01 March - - PowerPoint PPT Presentation

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Atlas Inner B-Layer CO 2 cooling system (Can we use Marco?) 01 March - - PowerPoint PPT Presentation

Mar 06, 2023 530 likes •694 views

bverlaat@nikhef.nl bverlaat@nikhef.nl Atlas Inner B-Layer CO 2 cooling system (Can we use Marco?) 01 March 2012 Bart Verlaat Jan Godlewski 1 bverlaat@nikhef.nl Atlas Inner B-Layer (IBL) IBL detector: 80mm x 800mm 1 kW @ -40C

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SLIDE 1

bverlaat@nikhef.nl

Atlas Inner B-Layer CO2 cooling system

(Can we use Marco?)

01 March 2012

Bart Verlaat Jan Godlewski

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bverlaat@nikhef.nl

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SLIDE 2

bverlaat@nikhef.nl

Atlas Inner B-Layer (IBL)

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New detector with smaller beam pipe in space of current beam pipe IBL detector:

  • Ø80mm x 800mm
  • 1 kW @ -40°C
  • 14 staves with 1 cooling pipe

Carbon foam structure 1.5mm ID titanium cooling pipe Pixel detector chips (71 watt/stave)

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SLIDE 3

bverlaat@nikhef.nl

IBL cooling layout in Atlas

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Tracking LAR Tile Calorie

Accessible manifolds Capillaries in IDep Vacuum insulated capillaries 14 IBL staves

LAR LAR

Vacuum insulated concentric transfer tube

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SLIDE 4

bverlaat@nikhef.nl

FL010

⅜”

VL009 HT011.temp HT011.thsw

9

PR009 PT009 TT009

10

PR010 PT010 TT010

16

PR016 PT016 TT016

7

PR007 PT007 TT007

17

PR017 PT017 TT017 VL017 VL006 VL018 VL007 FL008

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PR008 PT008 TT008

11 14 12 13 15

Tracking detectors Tile calorie meter LAR calorie meter

VL008 VL011 VL010 VL025 VL016

14 IBL staves (7 flow pairs)

(7x A-›C flow / 7x C-›A flow)

Cooling Unit A Cooling Unit B

Vacuum insulated concentric tube (~13 m) Detector boundary

Junction box @ Muon Sector 5 (Accessible)

Vacuum insulation Dry volume Transfer tubes (~100m) LAR Cryo area

PM027

USA-15

HT011 HX007 HX016

½” ⅜” ½” ⅜”

Dummy load (testing only) Vacuum lines

Vacuum insulation

Atlas IBL cooling system

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2 Marco’s?

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SLIDE 5

bverlaat@nikhef.nl

IBL Cooling pipes layout

(C-Side view)

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Vacuum insulated straight concentric transfer tube

Inlet Manifold Inlet Capillaries (Outlets on the A-side)

Foam insulated junction piping

(With condensation channels)

Vacuum insulated capillaries

LAR station

Foam insulated transfer tubing (Concentric TBV) To USA-15 cavern

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SLIDE 6

bverlaat@nikhef.nl

Transfer tube routing to cooling plant

  • A nearly horizontal path from cooling

plant to detector. Accumulated eight difference =7m => 1.4°C dT

  • Ca. 100 long path (1 way)
  • Vacuum insulation in detector to avoid

condensation problems

– Needs serious research, just a concept now!

  • Insulation will be foam outside detector

from LAR cryogenic plant towards CO2 cooling plant.

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SLIDE 7

bverlaat@nikhef.nl

IBL cooling specs

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5 10 15 20 25

  • 45
  • 40
  • 35
  • 30
  • 25
  • 20

IBL temperature and pressure profile. MF=1g/s, Tsp=-40ºC, Q=71.43, xend=0.31 Branch length (m) Temperature (ºC) 1 2 3 4 5 6 7 10 11 12 13 14 15 Pressure(Bar) T Structure (ºC) T Tube wall (ºC) T Fluid (ºC) P Fluid (Bar)

The 1kW power and sensors at -20°C require a CO2 temperature of -40°C (2-phase) / -50°C (Liquid)

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SLIDE 8

bverlaat@nikhef.nl

IBL transfer tube

  • IBL tube: Concentric 3/4”
  • uter x 5/16” inner tube.
  • Heat leak estimation: 1kW

=> Marco cooling capacity: 2.5 kW @-50°C

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2 4 6 8 10 12 14 0.5 1 1.5 2 Lam Lam Tur Tur Tur Tur Tur Tur Tur Tur Lam Lam Tur Tur Tur Tur Tur Tur Tur Tur Lam Lam Tur Tur Tur Tur Tur Tur Tur Tur Pressure drop (bar) Mass flow (g/s) Liquid pressure drop of an Atlas IBL supply tube Fluid=CO2, T=-40 ºC, Length=100 m, Angle=0º, Roughness=0 mu, Po=10 bar 0.25" OD, t=0.035" 0.3125" OD, t=0.035" 0.375" OD, t=0.035" 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Tur Strat SW SW SW SW SW SW SW SW 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 QE(kW) 0.4 0.8 1.2 1.6 2 Pressure drop (bar) Vapor Quality (-) 2-phase pressure drop of an Atlas IBL return tube Fluid=CO2, MF=14 g/s, T=-40 ºC, Length=100 m, Angle=0º Temperature drop (ºC) Concentric 0.75" OD, t=0.049" with 0.3125" center tube 10 20 30 40 50 60 70

  • 5

5 10 15 20 25 500 1000 1500 2000 2500 3000 Insulation thickness (mm) Surface temperature (ºC) Tfluid=-40 ºC, Tamb=22 ºC, Ki=0.04 W/mK, Length=100 m, Angle=0º Heat pick-up (W) Surface temperature Heat pick up 0.75" OD, t=0.049"

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SLIDE 9

bverlaat@nikhef.nl

IBL Accumulator sizing

  • Concentric 3/4” outer x 5/16”

inner tube *100m = 20 liter => Ratio Accu/loop = 2x => 40 liter accumulator.

  • Does this fit in

Marco?

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200 400 600 800 1000 1200 20 40 60 80 100 120 140

  • 5

º C

  • 25ºC

º C 25ºC 50ºC 75ºC 100ºC =0.2 =0.4 =0.6 =0.8 x=0.2 x=0.4 x=0.8 Density (kg/m3) Pressure (Bar)

  • 5

º C 2 2 º C 30ºC 25ºC =0.9 ASF=771 ABF=290 ASC=482

liq=968

MOP Tliq Rals=2.01

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SLIDE 10

bverlaat@nikhef.nl

IBL accumulator estimate

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54 cm 110 cm 14.6 cm 9 liter Marco accumulator 94 cm 150 cm 24 cm 40 liter IBL accumulator Marco frame limit 27 cm

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SLIDE 11

bverlaat@nikhef.nl

IBL needs a Lewa membrane pump (instead

  • f the Marco gear pump)

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SLIDE 12

bverlaat@nikhef.nl

Marco adjustments

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Current 9ltr Marco Accumulator Foreseen 40 liter IBL Accumulator Lewa membrane pump

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SLIDE 13

bverlaat@nikhef.nl

Atlas IBL plant space

  • New assigned IBL plant space has a

limited height: ~1.9m (but sufficient floor space)

  • Using Marco => No chiller underneath
  • Possible require more space for lewa

membrane pump swap

– Not sure what impact is on Marco design

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1.9 m

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SLIDE 14

bverlaat@nikhef.nl

IBbeLle?

Marco upgrade to IBbeLle

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HT119 PR119 PT119 LT119 VL129 VL118 by-pass vent evacuate fill

1 2 4 5 17 6 18 19

TT101 PR118 PT118 TT118 TT105 CO2 from experiment CO2 to experiment PR106 PR104 PT104 TT104 VL123 PM101

PM129

FT103 FL103 VL103

¼” ⅜” ¼” ⅜” ⅜” ¼” ¼” ¼” ⅜” ⅜” ¼”

FL123 VL104 VL128 VL105 VL106 PM102 HT104 HT104.temp HT104.thsw HT119.temp HT119.thsw

⅜”

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HX212 HX119 AC119 CO2 pumps CO2 condenser CO2 Accumulator PT103

3

HX208 HX101 HT119 VL129 VL118 by-pass vent evacuate fill

1 4 5

TT101 PR118 PT118 TT118 TT105 CO2 from experiment CO2 to experiment PR106 PR104 PT104 TT104 VL123

PM129

FT103 FL103 VL103

½” ½” ⅜” ½” ⅜” ⅜” ⅜” ⅜” ¼” ⅜” ⅜” ⅜”

FL123 VL128 VL105 VL106 HT104.temp HT104.thsw HT104 HT102.temp HT102.thsw HT102 PM101

2

VL103 VL101 VL12 VL122 PR103 PT103

3

⅜”

HT119.temp HT119.thsw

½”

17 6 18 19 7

HX212 HX119 AC119 PR119 PT119 LT119 HX208 HX101

Marco Is this what we need?

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SLIDE 15

bverlaat@nikhef.nl

IBL, Marco, IBbeLle and the future

  • We are intensifying the roadmap to the creation of the IBL CO2

cooling system design and construction.

– Are the IBL specs and Belle spec sufficiently similar for a common Marco (IBbeLle) approach? – Are our timelines similar? – If so how do we share the work and how do we organize each other?

  • Important items for a common IBbeLle approach:

– Redundancy – Control framework – AO?

  • Serious attention is needed for both Belle and IBL on the following:

– Vacuum insulation, this is the only option and needs more research to understand. – AO?

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