Towards a realistic design for a forward tracker at the ILC I. - - PowerPoint PPT Presentation

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Towards a realistic design for a forward tracker at the ILC I. - - PowerPoint PPT Presentation

Jan 02, 2023 14 likes •359 views

Towards a realistic design for a forward tracker at the ILC I. Garcia M.A. Villarejo M. Vos 1 Outline 1. Power pulsing 1.1 Barrel ladders Set-up - Thermal measurements 1.2 Petal ladders Set-up 2. Micro channel

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Towards a realistic design for a forward tracker at the ILC

  • I. Garcia

M.A. Villarejo

  • M. Vos
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M.A. Villarejo Bermúdez

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Towards a realistic design for a forward tracker at the ILC

Outline

  • 1. Power pulsing

– 1.1 Barrel ladders

– Set-up

  • Thermal measurements

– 1.2 Petal ladders

– Set-up

  • 2. Micro channel cooling:

– 2.1 Lab. Experiments – 2.2 CAE Simulations – 2.3 Comparison

  • 3. CAD model

– 3.1 First design of the services (cooling, cables) – 3.2 Assembly strategy

  • 4. Material budget calculations

– 4.1 Single Barrel ladder – 4.2 Vertex region in θ angle – 4.3 Vertex region in Φ angle

  • 5. Future work
  • 6. Conclusions
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Towards a realistic design for a forward tracker at the ILC

  • 1. Power pulsing
  • Pulsing power system

developed at IFIC Valencia

  • Study of the thermo-mechanical

properties of thin sensors with a pulsed power supply 1 ms 200 ms

Mechanical ladder prototype DEPFET technology

ILC DUTY CYCLE

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Towards a realistic design for a forward tracker at the ILC

  • 1. Power pulsing

50 100 150 200 22.92 22.94 22.96 22.98 23 23.02

Time (ms) Temperature sensor (oC) 0.04oC 0.04oC

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Towards a realistic design for a forward tracker at the ILC

  • 1. Power pulsing

5

CAD design

24 Si petals

FTD pixel disk mock-up

  • DEPFET mechanical petals
  • 75 um Silicon (< 0.2% X0)
  • CFRP Support disks
  • 1mm (0.09% X0 avg. area)
  • CFRP connection tubes
  • Custom 3D printed joints

Mechanical support structure

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Towards a realistic design for a forward tracker at the ILC

1 2 3 4 Setup Initial state

Water and DEPFET at room temperature

Power on

No cooling 5W

Cooling on

0,1l /h water at 304.45K

378,35K 312.85K 304.45K Tests made: 5W and water cooling

2.1 Micro channel cooling: Lab. Expertiments

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Towards a realistic design for a forward tracker at the ILC

Isolation (FR4) Isolation (FR4)

2.2 Micro channel cooling: CAE Simulations

Simulation made: 5W and water cooling with same initial conditions as test

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Towards a realistic design for a forward tracker at the ILC

Isolation (FR4) Isolation (FR4)

2.2 Micro channel cooling: CAE Simulations

Simulation made: 5W and water cooling with same initial conditions as test

T_water_out=308.6K Q_water=Cp*m*DT=(4186)*(2.15*0.00038*0.00034*997)*(308.6-304.4)= 4.87W 97% of the 5W is absorbed by the cooling flow

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Towards a realistic design for a forward tracker at the ILC

Isolation (FR4)

Initial state

Water and DEPFET at room temperature

Cooling on

0,1l /h water at 304.45K

312.85K 304.45K

Isolation (FR4)

Simulation: DT=7.15K Test: DT=8.4K

2.3 Micro channel cooling: Comparison

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Towards a realistic design for a forward tracker at the ILC

3.1 CAD Model: First design of the services (cooling, cables)

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Towards a realistic design for a forward tracker at the ILC

3.1 CAD Model: First design of the services (cooling, cables)

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Towards a realistic design for a forward tracker at the ILC

3.2 CAD Model: Assembly strategy

1 2 3 5 4 6 Steps: 1 → 2 SIT2 2 → 3 CFRP 3 → 4 SIT 1 & CFRP 4 → 5 VXBD 5-6 & CFRP 5 → 6 VXBD 3-4& CFRP

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3.2 CAD Model: Assembly strategy

Steps: 6 → 7 VXBD 1-2 & CFRP 7 → 8 FTD1 & CFRP 8 → 9 FTD 2 & CFRP 9 → 10 FTD 3-7 & CFRP (x2) 10 → 11 Beam Pipe 11 → 12 VXBD 3-4 & CFRP 11 12 9 10 7 8

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Towards a realistic design for a forward tracker at the ILC

4.1 Material budget calculations: single barrel ladder

Average %X0=0,275 Thickness Si: End of ladder: 0,103+0,340+0,076 mm ; Sensitive area: 0,050 mm ; Balcon: 0,450mm (x0,66) End of ladder Sensor region

0,053 0,073 0,006 0,002 0,007 Sensitive Frame Switcher Bumps Cu Layer

ILC 1st layer sensitive ladder: 0.142 %X0

0,059 0,449 0,039 0,031 0,010 0,021 0,033 DCDs/DHPs Si Structure Fluid (CO2) Bumps Cu Layer SMDs Power pulsing (cable)

ILC 1st layer end of ladder: 0.642 %X0

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Towards a realistic design for a forward tracker at the ILC

4.2 Material budget calculations

CAD Model .txt file with thickness Plot the data

Import data and calculate %X/X0 LPHNE's macro

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Towards a realistic design for a forward tracker at the ILC

4.2 Material budget calculations

CAD Model .txt file with thickness Plot the data

Import data and calculate %X/X0 LPHNE's macro

  • No use of GEANT4
  • Resolution of 0,01º
  • The studies are done for:

Θ=[0,90]º and ϕ=0º Θ=0º and ϕ=[0,360]º

  • Good tools for complex

geometries, but needing of data post processing

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Towards a realistic design for a forward tracker at the ILC

4.2 Material budget calculations

CAD Model .txt file with thickness Plot the data

Import data and calculate %X/X0 LPHNE's macro

  • No use of GEANT4
  • Resolution of 0,01º
  • The studies are done for:

Θ=[0,90]º and ϕ=0º Θ=0º and ϕ=[0,360]º

  • Good tools for complex

geometries, but needing of data post processing All of this has been possible because of the tool developed by:

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4.2 Material budget calculations

θ

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4.2 Material budget calculations

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4.2 Material budget calculations

4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 0,5 1 1,5 2 2,5 3 3,5 4 4,5 5 5,5 6 6,5 7 7,5 8

Cables FTD1-2 Beam pipe CFRP VXBD1-6 TOTAL θ Angle [º] % Radiation length

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4.2 Material budget calculations

4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 0,5 1 1,5 2 2,5 3 3,5 4 4,5 5 5,5 6 6,5 7 7,5 8

Cables FTD1-2 Beam pipe CFRP VXBD1-6 TOTAL θ Angle [º] % Radiation length 0,158 0,067 0,348 0,328 0,872

Average amount of % radiation length per material

Cables FTD1-2 Beam pipe CFRP VXBD1-6

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4.2 Material budget calculations

4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 0,5 1 1,5 2 2,5 3 3,5 4 4,5 5 5,5 6 6,5 7 7,5 8

Cables Beam pipe CFRP VXBD1-6 Total until first sensor θ Angle [º] % Radiation length

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4.2 Material budget calculations

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4.2 Material budget calculations

6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 0,5 1 1,5 2 2,5 3 3,5 4 4,5 5 5,5 6

Cables FTD1-6 Beam pipe CFRP VXBD1-6 TOTAL θ Angle [º] % Radiation length

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4.2 Material budget calculations

6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 0,5 1 1,5 2 2,5 3 3,5 4 4,5 5 5,5 6

Cables FTD1-6 Beam pipe CFRP VXBD1-6 TOTAL θ Angle [º] % Radiation length 0,162 0,148 0,348 0,449 0,770

Average amount of % radiation length per material

Cables FTD1-6 Beam pipe CFRP VXBD1-6

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4.2 Material budget calculations

6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 0,5 1 1,5 2 2,5 3 3,5 4 4,5 5 5,5 6

Cables Beam pipe CFRP VXBD1-6 Total until first layer θ Angle [º] % Radiation length

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4.2 Material budget calculations

Ф

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4.3 Material budget calculations: Vertex region in Φ angle

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5 Bonus: long barrel sensor coverage in θ

1 2 3 4 5 6 7 8 9

VXBD1-6+SIT1-2 VXBD1-6+SIT1 VXBD1-6 VXBD1-6+FTD1 VXBD1-5+FTD1 VXBD1-5+FTD1+FTD3 VXBD1-4+FTD1+FTD3 VXBD1-4+FTD1-3 VXBD1-3+FTD1-3 VXBD1-2+FTD1-3 VXBD1-2+FTD1-4 VXBD1+FTD1-4 FTD1-4 FTD1-5 FTD2-5 FTD2-6 FTD2-7 FTD3-7 FTD4-7 FTD5-7 FTD6-7 FTD7

Angle in theta ϴ

Number of sensors

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4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 1 2 3 4 5 6 7 8 9 10 11 VXBD1-6+SIT1-2 VXBD1-6+SIT1-2+FTD1-2 VXBD1-5+SIT1-2+FTD1-2 VXBD1-5+SIT1+FTD1-2 VXBD1-4+SIT1+FTD1-2 VXBD1-4+FTD1-2 VXBD1-4+FTD1-4 VXBD1-3+FTD1-4 VXBD1-2+FTD1-4 VXBD1-2+FTD1-4+FTD7 VXBD1-2+FTD1-7 VXBD1-2+FTD1-8 VXBD1+FTD1-8 VXBD1+FTD3-8 FTD3-8 FTD3-9 FTD5-9 FTD5-10 FTD5-11 FTD7-11 FTD8-11 FTD9-11 FTD10-11 FTD11 Angle in theta ϴ Number of sensors

5 Bonus: short barrel sensor coverage in θ

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5 Bonus: comparison

4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 1 2 3 4 5 6 7 8 9 10 11

Long barrel Short barrel

Angle theta Number of sensors

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  • 4. Future work
  • Thermal measurements of the power pulsing in ALL petals together
  • Integrate the CAD design within the ILD design (any help?)
  • More thermal studies about micro channel cooling:
  • Define the mechanical connexion
  • Define the coolant (CO2)
  • Parallel simulations as soon as the design changes
  • Define a second iteration of the mechanical structure to hold up the

petals and the barrel sensors.

  • Reduce the material budget
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  • 5. Conclusions I
  • No thermal variations observed due to the power pulsing (ILC cycle 1/200)
  • CFX micro channel cooling simulations match with empirical results for water

(5W is not the ILC cycle!).

  • Assembly process studied and feasible with DEPFET sensors and its services

(cables).

  • Beam pipe not compromised: no element assembled to it.
  • The most realistic material budget shown with DEPFET technology for the

entire ladder.

  • Calculated material budget for the first sensitive layer and or all the vertex

region.

  • Comparison presented between long barrel region and short barrel region.
  • Sensor coverage studied for long and short barrel configurations.
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Thank you