Overview – Nb3Sn Furnace TE - MSC - LMF Internal review of the 11T reaction fixture and impregnation mould Description of the reaction oven and of the fixture Wed 19/10/2016 F. Lackner, P. Revilak, C. Scheuerlein, D. Smekens, M. Duret, S. Luzieux S. Triquet, J.L. Rudeiros Fernandez, F. Meuter Overview – Nb3Sn Furnace F. Lackner, Oct. 2016 F. Lackner & P. Revilak, RHT / internal review

MSC – Reaction furnaces in MDT & LMF, specification: F. Lackner & P. Revilak, RHT / internal review

Coil preparation and mould closure Mould into retort Closure of retort RHT sequence: Coil preparation and mould closure Mould into retort Closure of retort Fast purging with Ar till required Oxygen reduction is achieved (<< 10 ppm) Ar purging with reduced flow during heat cycle (Fixture + retort) Ramping 1 (250 ̊C at 50 ̊C/h) Plateau 1 (250 ̊C for 48h) Ramping 2 (400 ̊C at 50 ̊C/h) Plateau 2 (400 ̊C for 48h) Ramping 3 (650 ̊C at 50 ̊C/h) Plateau 3 (650 ̊C for 50h) Obsolete: Fast cooling with about 1200 m3/h, hot air extraction from furnace chamber F. Lackner & P. Revilak, RHT / internal review

Inert gas and retort based Nb3Sn RHT furnace building 180: Cooling flaps Furnace chamber with separation Supplier: Gero, Neuhausen (DE) Power consumption: 150 kW Treatment length: 6.5 m Max load: 700 kg/m Fast cooling: 1200 m3/h Purging: 20000 l/h O2 << 10 ppm within 6 hours Fast cooling fan Heater connection box Chariot with separation chamfer F. Lackner & P. Revilak, RHT / internal review

Dimensions: F. Lackner & P. Revilak, RHT / internal review

Gas piping layout: Bypass line: Quick purging up to 1600 - 20000 [l/h] Main line: Flow control up to 6000 [l/h] Ar dewar bldg. 297 Purging (GERO): 5-7x Vretort = about 30000 (Or evacuation at RT) Min. required O2 for launching process: 5 to 10ppm) F. Lackner & P. Revilak, RHT / internal review

Inner furnace space - Heat zones: Zone 3 (Master) Zone 2 Zone 1 (Floor) 500 6500 Zone 1: Installed inside the retort support chariot. Covered by SiC plates. 600 Zone 2: Master zone for control. Can be switched to other zones. One central temperature gage per side (5 in total) F. Lackner & P. Revilak, RHT / internal review

Gas piping layout: Retort 4150 l Rare face Exhaust O2 gage Bypass line Magnet valve 10 bar 2 bar Overpressure Flow regulator P control Argon Retort – 1150 l Retort 4150 l Door Preparation by customer Massflow control Main line T-connector Cutting ring connection ø12mm Bypass line: Quick purging up to 20000 [l/h] Main line: Flow control up to 6000 [l/h] Installation either based on bottles or fixed gas tank in front of bldg. 927 Purging (GERO): 5-7x Vretort Min. required O2 for launching process: < 1% (Sensor resolution: 5 to 10ppm) F. Lackner & P. Revilak, RHT / internal review

Loading sequence: TE-MSC-LMF Preparation for loading, park position of transfer table: Door Thermal insulation Graphite plate Retort Nb3Sn tooling Lifting system Support profiles Rails Transfer table Basement Loading step 1: transfer table rails in front of retort: Thermal insulation F. Lackner & P. Revilak, RHT / internal review

Loading sequence: TE-MSC-LMF Loading step 2: tooling inside the retort – connection of Ar tubing and T-gages Thermal insulation Loading final, start of purging and afterwards the heat cycle: Thermal insulation Argon: Purging: max: 12 m3/h Operation: min: 1 m3/h F. Lackner & P. Revilak, RHT / internal review

Fast cooling sequence: TE-MSC-LMF Fast cooling process: Extraction Hood O2 Flaps Thermal insulation Argon: Purging: max: 12 m3/h Operation: min: 1 m3/h F. Lackner & P. Revilak, RHT / internal review

Tooling transfer table: Yellow parts are moving inside the retort Graphite plate is placed on top Inside the retort the support is rolling on the retort surface Hydraulic lifting device Rail guiding Length providing guiding when placed inside the retort F. Lackner & P. Revilak, RHT / internal review

Cycle from 5.5 m coil RHT: F. Lackner & P. Revilak, RHT / internal review

Functions OF REACTION TOOLING (P1) Conserve coil in nominal geometry (stability at 700 degC) (P2) Protection of coil from mechanical distortion (Handling after RHT) (P3) Support/generate oxygen-low environment (P4) Facilitate evacuation of debris from coil To edit speaker name go to Insert > Header & Footer and apply to all slides except title page

Basis: Tooling designed by US-LARP Nb3Sn program Evolution of tooling Basis: Tooling designed by US-LARP Nb3Sn program Short model tool: Small changes to achieve higher rigidity Long prototype tooling: Enlargement of tool for better accessability, adittion of Ar-guide grids To edit speaker name go to Insert > Header & Footer and apply to all slides except title page

Referencing coil cavity and baseplate Geometrical setup Referencing coil cavity and baseplate Ensuring smooth cavity surface (joining blocks) To edit speaker name go to Insert > Header & Footer and apply to all slides except title page

Geometrical setup: Principal setup tool Referencing coil cavity and baseplate “Align center of formblock radius with middle of baseplate” X-direction, Y-direction, Z- direction 2. Ensuring smooth cavity surface (joining blocks) (X-direction), Y-direction, (Z- direction) Reference surface Delta 10.5 mm To edit speaker name go to Insert > Header & Footer and apply to all slides except title page

Geometrical setup: Layers To edit speaker name go to Insert > Header & Footer and apply to all slides except title page

Geometrical setup: Layers 0-Reference baseplate surface 1-MICA1 - 0.125 (provision in mandrill design) 2-mandrill (r= 29.75 mm) 3-MICA21 (0.125) 4-MICA-22 (0.125) 5-COIL (OD nom.: 60.6) 6-MICA31(0.125 mm) 7-MICA32 (0.125 mm) 8-GRIDFOIL01(0.5 mm) 9-GRIDFOIL02 (0.3 mm) 10-SEALFOIL (0.5 mm) Nominal Gap = 0.1 mm To edit speaker name go to Insert > Header & Footer and apply to all slides except title page

Possibilty to “flush” coil with Argon Argon guide Intention: “Worries to make sure, there is a continuous Argon atmosphere along the 6m tool” Objectives: Tight chamber Possibilty to “flush” coil with Argon To edit speaker name go to Insert > Header & Footer and apply to all slides except title page

Endplates sealed with MICA-sheets (as Fermilab and 927) Argon guide: SEALING and gaskets: Endplates sealed with MICA-sheets (as Fermilab and 927) Lateral seal: only compaction of steel sheet GUIDE system: Pipe to transfer AR inside the mandrels Holes and channels in the mandrel to distribute on coil inner radius Grid system on coil outer radius to transport Argon to outlet To edit speaker name go to Insert > Header & Footer and apply to all slides except title page

Argon guide: Setup: Ar Ar Fixture Saddles Coil Grid foil Interlayer VAMAS volume Mandrell Ar-pipe To edit speaker name go to Insert > Header & Footer and apply to all slides except title page