ICS BiWeekly Meeting 10 November 2020 https indico

ICS Bi-Weekly Meeting 10 November 2020, https: //indico. cern. ch/event/936933/ Tilted TBPS Cooling Pipe Dimensioning Layer 3 case TBPS Layer 3 – 60 deg Ring 1 Pierre Rose (CERN)

Introduction Layer 3 Ring : 36 PS Modules to cool down in one loop Layer 2 Ring : 26 PS Modules to cool down in one loop TBPS Layer 3 – 60° Ring with PS Modules Layer 1 Ring : 18 PS Modules to cool down in one loop 2

Layer 3 – Pipe Dimension Study 2. 35 2. 7 Chart from Tom, valid for 250 W, 2. 5 g/s with 7. 5 m SS tube Thomas French’s extrapolation : “With 2. 2 mm ID my current prediction is about 8 -9 C, this plot shows about 4. 7 C at 2. 2 mm. Therefore to halve the delta T to about 4 -4. 5, I would predict an ID of about 2. 7 mm. ” 3

Layer 3 – Pipe Dimension Study Ring 60° Previous Tube Ø 2/2. 2 mm 3 D OK Baseline Tube Ø 2. 2/2. 5 mm 3 D OK 4 Studies Tube Ø 2. 45/2. 75 mm 3 D OK Tube Ø 2. 7/3 mm 3 D OK

Layer 3 – Pipe Dimension Study Ring 60° +0. 5 mm d 5

Layer 3 – Pipe Dimension Study Ring 60° 6

Layer 3 – Pipe Dimension Study Ring 60° 36 adaptors 1 Inner Pipe 1 Outer Pipe Negligible Density Al-CF : 2. 4 g/cm 3 Stainless Steel : 8 g/cm 3 What about Layer 3 – Ring 44 °? 7

Layer 3 – Pipe Dimension Study Ring 44° Ring 60° 6. 4 mm d d 4. 4 mm 5. 1 mm 3. 6 mm Tube Ø 2. 2/2. 5 mm 8

Layer 3 – Pipe Dimension Study Ring 60° Ring 44° 1 adaptor 36 adaptors 9

Layer 3 – Pipe Dimension Study Ring 60° Ring 44° +215 +170 +230 +180 12 * L 3 44° Rings 12 * L 3 60° Rings From Cooling Pipe Ø 2. 2/2. 5 mm to Ø 2. 45/2. 75 mm : +0. 4 kg From Cooling Pipe Ø 2. 2/2. 5 mm to Ø 2. 7/3 mm : +0. 8 kg (full TBPS ≃ 175 kg) 10

Layer 3 – Pipe Dimension Study Conclusion - Going from Ø 2. 2/2. 5 mm Cooling Pipe to Ø 2. 7/3 mm for Layer 3 Rings: • Is Mechanically OK but not testing on Jigs (bending) • Increases the total mass by 0. 8 kg (≈0. 5% of the full TBPS) • Increases the distance from the Cooling plate center by 1 mm (thermal performance effect ? ) • Decreases, theoretically, ΔT by 2 (from 8 -9°C to 4 -4. 5°C(according to the chart)) • No impact on the Sandwich Plate Ring (its Price Enquiry is about to be launched) - Until further (thermal) studies we keep the 2. 2/2. 5 mm pipe as baseline for all TPBS Rings 11