Cooling pipes and Space for Services S.Tanaka 2010/3/8

What we should discuss? Critical region for space allocation Operation temperature (Cooling temperature) Need thermal jacket on cooling pipes. At first we should learn from Belle experience.

Belle vs BelleII

CDC 403cm2 for backward 99cm2 for forward               radius　　Backward　　　　Forward Optical fiber　 8mm 600 　 100 Lemo　　　　　 3mm　 300 　 50 Power　　　　 11mm　 60 10 HVLemo　　　 3mm　　 0 448 Gas 　 15mm　　　 8 0 Air 　7mm　　　 8 8 Water 7mm　　　 16 2

IR region About assembling of beam mask vertical division case The weight of beam mask will be around 10 kg for each, therefore beam pipe could not keep this (different with BELLE I). Beam masks support with SVD mechanical structure.

IR region 1 3 2 4

IR region This space assignment is important for services on upgrade

IR Service route ~500mm from IP 16*16*3.14=804cm2 PXD cabling route is independent with SVD Readout Cable and cooling pipe are sitting between shields.

PXD service Cooling pipe ~7cm2 per each side from KLM to outside PXD->DHH(or repeater box) Kapton Flex length ~50cm 7 mm x 0.8 (?)mm(20 per side) x-section: ~112mm² DHH->Rack(20 per side) Power Cables~ 30m 25 lines :X-section: 20 mm2 Total x-section 651mm² (not fixed yet: worst estimation) Cooling pipe Air flow pipe Diameter 1.2 mm (20 lines): (ID:1mm) Cooling for modules 2.7mm (ID:2.5mm) inlet 6mm :outlet X-section 55mm2 I/O: cables and fibres Diameter~4mm, 20 per side x-section 251 mm² (not fixed yet) ~7cm2 per each side from KLM to outside

SVD service Number of Cables and tubes for SVD Forward side Backward side Number Area (mm2) Total (cm2) Hybrid cables (near IP) 129 32 41.28 156 49.92 Hybrid cables (From KLM) 65 20.8 78 24.96 Power cables (From KLM) 25 60 15 30 18 CO2 Tubes (for Ladders R=0.6mm) 16 1.1304 0.1809 58 0.6556 CO2 Tubes (After manihold 1/4") 4 39.69 1.5876 6.3504 CO2 tubes (with heat insulator) 400 64 IP chamber water (1/4") IP chamber paraffin (1/4") 2 0.7938 Dry air (2cmx2cm tubes) Summary of CO2 tubes for SVD ladder and End ring Origami End ring Sum L R L6(Backward) 22 10 8 L6(Forward) L5(Backward) 6 L5(Forward) L4(Backward) 14 L4(Forward) L3(Backward) L3(Forward) Summary: Cross section of Cables and Tubes 3 March 2010 Near IR Forward 59.8423 cm2 Backward 68.1632 From KLM to outside 70.1814 124.548 The table is inspected by Markus Friedl and Immanuel Gfall on 3 March 2010. The table is preliminary and subject to change. On IR region, The services occupy about 15%(forward),18%(backward) area between QCS shield and CDC at minimum.

Another service route?

Summary Total cross section for services on KLM to outside is 193 (193 or 386 on backward)for B-PID 99 (403)for CDC 300() for E-PID 70 (124)for SVD 7 (7)for PXD 669 cm2 on forward region(920 cm2 for backward) 9.5(13)mm space in average on the region between B-PID and E-PID on foward(backward) (not consider cable tray, hook and so on.) On IR region, The services occupy about 15%(forward),18%(backward) area between QCS shield and CDC at minimum. (We should consider the bending effect of cables and pipes.) pr2-p*1122=572cm2

B-PID Belle I Barrel ACC

B-PID 2 Bar option on B-PID 193 cm2 in total for KLM to outside HV 0.09cm2 x 17 x 16modules Power 0.98cm2 x 2 x 16modules Cooling pipe 3 cm2 x 2 x 16modules Fiber 0.08cm2 x 7 x 16modules RF, monitor 0.25cm2 x 8 x 16modules 193 cm2 in total for KLM to outside (1 Bar option is worst case on backward KLM) Services for 1 Bar option need about the half area for each side(386cm2)

E-PID （HV） OD 4mmx90 (Bias and guard） 60mmx2mm flat cable x30 (for 1/6 sector) 50cm2 *6=300cm2 pipe：1/4inchx4（water and Nitrogen) Cable： OD 3mm fiber x3 OD 5 Cat5 cable x 2