Introduction to W7-X Coil Testing at CEA – Saclay, France G.Croari – Barth seminar 2008

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC Outline Test facility description Coil test procedure Conclusion G.Croari 1/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC Outline Test facility description Coil test procedure Conclusion Cryostats, valve boxes, satellite Power supply Pumping system Cryogenic part (Refrigerator/liquifier) Data acquisition system G.Croari 1/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC Outline Test facility description Coil test procedure Conclusion Cryostats, valve boxes, satellite Power supply Pumping system Cryogenic part (Refrigerator/liquifier) Data acquisition system Documentation Incoming Inspection tests Coils into cryostat Outgoing check G.Croari 1/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC Outline Test facility description Coil test procedure Conclusion Cryostats, valve boxes, satellite Power supply Pumping system Cryogenic part (Refrigerator/liquifier) Data acquisition system Documentation Incoming Inspection tests Coils into cryostat Outgoing check My contribution G.Croari 1/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 1. Test Facility Description Cryostats, valve boxes, satellite Power supply Pumping system Cryogenic part (Refrigerator/liquifier) Data acquisition system G.Croari 2/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 1.a) Cryostat, Valve boxes, Satellite Cryostat 1 Valve box C 1 Satellite Valve box C 2 Cryostat 2 Test Frames G.Croari 3/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 1.a) Cryostat, Valve boxes, Satellite Cryostat detail Connections for Coil A Nitrogen Shield Connections for Coil B G.Croari 3/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 1.a) Cryostat, Valve boxes, Satellite Valve box detail Valves Current leads G.Croari 4/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 1.a) Cryostat, Valve boxes, Satellite Valve box detail Safety Valves Cablings Calibration Leak G.Croari 4/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 1.b) Power Supply Input: 380 Vac 3-phase Simplified schematic Transformer Thristors Iout Load G.Croari 5/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 1.b) Power Supply Input: Max absorption 980 A Nominal Power 700 KVA Water cooled Output: Max current 25KA Max Voltage 10V Regulation: <+-10 E-4 on inductive Loads <+-10 E-3 on resistive Loads G.Croari 5/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 1.c) Pumping System G.Croari 6/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 1.c) Pumping System Primary system ( 5 E – 3 mbar ) Secondary system ( 1 E – 6mbar ) G.Croari 6/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 1.d) Cryogenic part: Refrigerator / Liquifier Cold Box Nitrogen Exchanger Heat Exchangers Turbine Cold Helium G.Croari 7/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 1.d) Cryogenic part: Refrigerator / Liquifier Specifications of cold part: Total mass flow rate 46 gr/sec LHe @ 300 K Refrigerating power = 200W @ 4,2 K LHe production = 70 Lt / hour 5000 Litres LHe tank G.Croari 7/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 1.e) Data Acquisition System Signals: Voltage drops Mass flow meters Current of Power Supply Pressure drops Temperature sensors Strain gauges Extensometer Coils & Test Facility Coils G.Croari 8/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 1.e) Data Acquisition System Sampling rates table   Sensor type Voltage Current Others Condition - Cool down / Warm up (phase 1) 0.025Hz - Cold Test day (phase 2) 1Hz - Quench / Fast Discharge (quench) 5kHz 100Hz G.Croari 8/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 2. Coil Test Procedure Documentation Incoming Inspection tests Coils into cryostat Outgoing check G.Croari 9/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 2.a) Documentation Scope and Requirements G.Croari 10/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 2.a) Documentation Scope and Requirements Documentation 10/15 G.Croari 10/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 2.a) Documentation Scope and Requirements Documentation Non Conformrmity Report G.Croari 10/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 2.b) Incoming Inspection Tests Unloading from the lorry G.Croari 11/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 2.b) Incoming Inspection Tests Unloading from the lorry Installation under a test frame G.Croari 11/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 2.b) Incoming Inspection Tests Unloading from the lorry Installation under a test frame Bending and Joint box installation G.Croari 11/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 2.b) Incoming Inspection Tests Unloading from the lorry Installation under a test frame Bending and Joint box installation Cablings and tests: Temperature sensors, Strain gauges, Extensometers G.Croari 11/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 2.b) Incoming Inspection Tests Unloading from the lorry Installation under a test frame Bending and Joint box installation Cablings and tests: Temperature sensors, Strain gauges, Extensometers QD Wire check, DC insulation test G.Croari 11/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 2.c) Coils Into Cryostat Coil at open cryostat: QD wire check, DC test G.Croari 12/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 2.c) Coils Into Cryostat Coil at open cryostat: QD wire check, DC test Under Vacuum: Leak test Calibration leak Coil leak G.Croari 12/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 2.c) Coils Into Cryostat At open cryostat: QD wire check, DC test Under Vacuum: Leak test Coils at cryogenic temperature:  Current test  AC test, DC test G.Croari 12/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 2.c) Coils Into Cryostat At open cryostat: QD wire check, DC test Under Vacuum: Leak test Coils at cryogenic temperature: Current test,  AC test  DC test AC test is to test the interlayer insulation G.Croari 12/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 2.c) Coils Into Cryostat At open cryostat: QD wire check, DC test Under Vacuum: Leak test Coils at cryogenic temperature: Current test, AC test,  DC test  DC test is a general check of insulation G.Croari 12/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 2.d) Outgoing check Before shipment: QD wire check Outgoing check G.Croari 13/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 3. Conclusion My Contribution G.Croari 14/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 2) Conclusion Coil testing is about 60 % accomplished The testing rate increased significantly from 2 coils / year in 2003 up to 18 coils / year in 2007 A failure can be considered as a chance to learn more G.Croari 15/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC 2.a) My contribution Daily work: What I would like to improve: Daily communication between CEA and IPP La Langue Française Documentation in case of unexpected behaviour during test Control Systems Understanding of the test facility Data Acquisition Systems G.Croari 15/15 irfu / SACM

Wendelstein 7–X training seminar Barth, April 23 - 24, 2008 Max-Planck-Institut für Plasmaphysik 1-YKB01 MC Thanks to... CEA: L.Genini B.Renard L.Vieillard All the French technicians IPP: H.Viebke K.Hertel J.Baldzuhn H.Ehmler G.Croari irfu / SACM