Insulation vacuum seals M-ECCTD STATUS Elastomeric O Ring everywhere, except: Windows (x4), CF63 copper Extremity central flat cover (x2), Metallic Helicoflex Coupler flange (x4), Metallic Helicoflex Rupture disk pipe (x2) Elastomer He valve (x2) Elastomer Feedthrough ports (x6) & connectors (x12) Elastomer Safety valve Elastomer Jumper connection Elastomer Jumper Elastomer instrumentation(x2) Elastomer Central flat cover (x2) Helicoflex Windows (x4) CF63 Copper Pumping port (x2?) Elastomer Trap doors (x8) Elastomer Jacks(x12) Elastomer Bell flange Elastomer Coupler He outlet (x4) Elastomer Tip flat cover (x2) Elastomer Coupler flange Helicoflex

M-ECCTD VANNES Tube enceinte D108,2x114,3 (Ep. 3,05) Bride enceinte D108,2x165 Ep. 12 Bride vanne Dext165, Ep. 12 8 vis CHc M8x40 sur D145 Joint élastomère D117x124x3,5 Gorge D117x125,5,5x2,6 M-ECCTD LIAISON MANCHETTE/COUDE JUMPER Tube coude D349,6x355,6 (Ep. 3) Bride coude D349,6x425, Ep. 18 Tube manchette D349,6x355,6 (Ep. 3) Bride manchette D349,6x425, Ep. 18 12 vis HM12x55 sur D395 Joint élastomère D359,3x370,7x5,7 Gorge D360x373,5x4,2 INTERFACE JUMPER Tube coude D349,6x355,6 (Ep. 3) Bride coude Dext451, Ep. 18 16 vis HM12x35 sur D410 Joint élastomère côté BAV SOUPAPE ENCEINTE Design idem spokes Joint élastomère D202,57x213,23x5,33 LIAISON ENCEINTE/JUMPER Tube enceinte D343,6x355,6 (Ep. 6) Bride enceinte D343,6x425, Ep. 20 Tube manchette D349,6x355,6 (Ep. 3) Bride manchette D349,6x425, Ep. 18 12 vis HM12x55 sur D395 Joint élastomère D359,3x370,7x5,7 Gorge D360x373,5x4,2 INSTRUMENTATION DN100 & POMPAGE VIDE Tube enceinte D108,2x114,3 (Ep. 3,05) Bride enceinte D108,2x165 Ep. 12 Bride couvercle Dext165, Ep. 12 8 vis CHc M8x40 sur D145 Joint élastomère D117x124x3,5 Gorge D117x125,5,5x2,6 INSTRUMENTATION DN160 Tube enceinte D150x159 (Ep. 4,5) Bride enceinte D150x225 Ep. 16 Bride couvercle Dext225, Ep. 16 8 vis HM10x50 sur D200 Joint élastomère D170,8x181,4x5,3 Gorge D171x183,5,5x3,9 LIAISON ENCEINTE/CLOCHE DISQUE RUPT. Tube enceinte D267x273,6 (Ep. 3) Bride enceinte D264x335, Ep. 16 Tube cloche D267x273 (Ep. 3) Bride cloche D264x335, Ep. 16 12 vis HM10x50 sur D310 Joint élastomère D279x286x3,53 Gorge D280x289x2,6 TRAPPES (A valider) Tube enceinte D349,6x355,6 (Ep. 3 à 6) Bride enceinte D425 Ep. 20 Couvercle D425, Ep. 20 (alu) 12 vis HM12x55 sur D395 Joint élastomère D359,3x370,7x5,7 Gorge D360x373,5x3,9 BRIDE COUPLEUR Bride coupleur D352 Ep. 25 Bride cloche D275x360 Ep. 20 18 vis HM10x35 sur D295 (Joint élasto. D320x330x5) Joint Helicoflex D324x334x5 Gorge D321,7x334,5x4,1 VERINS Tube enceinte D108,2x114,3 (Ep. 3,05) Bride enceinte D76x165 Ep. 12 (16) Bride couvercle D165, Ep. 12 8 vis CHc M8x40 sur D145 Joint élastomère D117,07x124,13x3,53 Gorge D117x125,5x2,6 SORTIE HELIUM COUPLEURS Tube enceinte D62,7x73,02 (Ep. 5,16) Bride enceinte D130 Ep. 12 Bride réchauffeur D130 Ep. 12 6 vis CHc M8x40 sur D110 Joint élastomère D85,3x92,3x3,53 Gorge D85x93,5x2,6 CLOCHE COUPLEUR Tube enceinte D445,2x457,2 (Ep. 6) Bride enceinte D435x540 Ep. 20 Tube cloche D400,4x406,4 (Ep. 3) Bride cloche D400,4x540 Ep. 20 16 vis HM12x55 sur D495 Joint élastomère D459,3x470,7x5,7 Gorge D460x473,5x4,2 FOND PLAT ENCEINTE Tube enceinte D1200x1220 Bride D1200x1344 Ep. 22mm (fond), 35mm (enceinte) 40 vis HM12x75 sur D1310 Joint élastomère D1243x1258x7,5 Gorge D1245x1263x5,2 FOND PLAT TRANSITION Bride 420x481 Ep. 12mm (fond), 24mm (transition) 40 vis CHc M8x25 sur D444 (Joint élasto. D459,3x470,7x5,7) Joint Helicoflex D460x470x5 Gorge D457,7x470,5x4,1

Vacuum vessel update for H-ECCTD & SERIEs Pipes for rupture disks (x2) Turned to aluminium gasket Helium valve(x2) Turned to alu. gasket Flange for rupture disk (x2) to rework by final machining 1 DN160 nozzle kept for contingency DN100 pumping port replaced by DN160 on the top of the vacuum vessel DN100 pumping removed for H-ECCTD and series Supports drilling to finalize

Insulation vacuum seals proposals for h-ecctd & series Elastomer: seals can be changed easily without removing the cryomodule from the beam line (maintenance operation) Aluminium: standard diameter Helicoflex: non standard or too big diameter Rupture disk pipe (x2) Aluminium DN250 He valve (x2) Aluminium DN100 Feedthrough ports DN160 (x4) & DN100 (x2) Elastomer or aluminium (elastomer for connectors) Safety valve Elastomer Jumper connection Elastomer Jumper Elastomer (x2) instrumentation(x2) Elastomer or aluminium Central flat cover (x2) Helicoflex Windows (x4) CF63 Copper Pumping port Aluminium DN160 Trap doors (x8) Elastomer Jacks(x12) Elastomer Coupler He outlet (x4) Aluminium DN63 Tip flat cover (x2) Elastomer Bell flange Elastomer Coupler flange Helicoflex

Insulation vacuum seals proposals for h-ecctd & series PRINCIPLES No permanent elastomeric seal due to radiations rate and normal ageing Elastomeric O Ring seals for gaskets that can be replaced easily during maintenance operations (no opening of extremity covers, therefore removing of the cryomodule) Aluminium for other gaskets with standard dimensions Special metallic references (Helicoflex or similar) for non standard dimensions Aluminium gaskets

Insulation vacuum seals proposals for h-ecctd & series

Pumping & connecting ports (H-ECCTD / series) ISO-F DN160 – 3 connectors - Heaters - CTS Motorization - CTS Piezo system ISO-F DN160 – 3 connectors - Level gauges - Cernox extremity & cavities 1/2/3 - Pt100-50K extremity & cavities 1/2 - Pt100-300K extremity & cavities 1/2 ISO-F DN160 – 3 connectors - Cernox extremity & cavity 4 - Pt100-50K extremity & cavity 4 - Pt100-300K extremity & cavities 3/4 ISO-F DN160 * Connecting port (H-ECCTD) (removed Instrumentation) * Contingency port (Series) - Cernox all cavities - Pt100 all cavities 1830 ISO-F DN160 pumping port 670 ISO-F DN100 – 2 N plugs - RF pick-up cavity 3 - RF pick-up cavity 4 ISO-F DN100 – 2 N plugs - RF pick-up cavity 1 - RF pick-up cavity 2 400