Cryogenic Insulation Technologies

Transcription

1 Cryogenic Insulation Technologies Presented at: HTS Wire Development and Applications Workshop Panama City, FL Matthew W. Hooker January 16, Campus Drive, Suite D Lafayette, Colorado Phone:

2 Engineered Material Solutions CTD is a unique company where the development of original materials is fused with incisive engineering to provide innovative solutions for our customers technology and system needs. For CTD, development of new materials is an engineering tool Electrical and Thermal Insulation Elastic Memory Composites Composite Pressure Vessels & Tanks 2 Cryogenic Insulation Technologies

3 Product Development Tools Engineering Define Requirements and develop conceptual component design Micro-Mechanics Modeling Laminate Design Component Design Fabricate First Article Nano Micro Milli Centi Meter Materials & Product Development Polymer Synthesis Polymer Evaluation Laminate Evaluation Coupon/Component Testing 3 Cryogenic Insulation Technologies

4 Insulation Development Goals Mission Improve system-level performance Reduce cost Improve reliability Reduce manufacturing risk Applications Fusion energy High-energy physics Motors, generators, and transformers MRI, NMR Cryogenic adhesives Insulation Processes Vacuum pressure impregnation (VPI) Wet-winding Prepreg High pressure laminates (HPL) Testing & Validation Insulation characterization Processing characterization Mechanical testing Electrical testing Thermal testing Fabricate subscale test articles Radiation testing 4 Cryogenic Insulation Technologies

5 Enabling Program Success Insulation Product Lines - Epoxy-based systems 100-series 500-series - Cyanate Esters 400-series - Ceramic-based systems 1000-series 1200-series Design Considerations - Mechanical performance at cryogenic & elevated temperatures - Dielectric strength - Large-scale manufacturability - Radiation resistance 5 Cryogenic Insulation Technologies

6 ITER CS Model Coil The ITER Central Solenoid (CS) Model Coil - Successfully tested in Japan One of the world s largest superconducting magnets Coil ramped to 13T; no training or quench was observed CTD-112P pre-preg epoxy is the primary insulation! CTD developed radiation-resistant glass/epoxy insulation for use in ITER superconducting magnets. Met ITER property requirements after exposure to >10 9 Rads CTD developed insulation application processes and provided extensive engineering and material testing support 6 Cryogenic Insulation Technologies

7 High-Performance Impregnants Design for manufacturability - Low viscosity - Long pot life - Thermosetting resins Enhanced performance - High mechanical strength at cryogenic temperatures - High dielectric strengths - Thermal shock resistance - Radiation resistance Impregnation systems - CTD-101K (epoxy) - CTD-403 (cyanate ester) NCSX coil High-Field Magnets 7 Cryogenic Insulation Technologies

8 Insulation Performance Winding form Winding Pack Quasi-Poloidal Stellarator (QPS) Coil Short-Beam-Shear Strength (MPa) Compression Strength (GPa) 8 Cryogenic Insulation Technologies CTD-403/S2-Glass 373 K 293 K 76 K Temperature CTD-403/S2-Glass 373 K 293 K 76 K Temperature

9 Wind-and-React Fabrication of Nb 3 Sn Magnets Green State 150 C for 3 hours Pyrolysis 650 C for 30 hours in N 2 Insulated Coil Section VPI Impregnate with organic resin and cure Completed Coil Hybrid Insulation Application To Conductor 9 Cryogenic Insulation Technologies

10 Enhanced Strain in Ceramic-Composite Insulation 200 CTD-CF-200 reinforcement CTD-1202X and CTD-403 matrix 76 K Fiber/Matrix De-bonding Graceful Failure Stress (MPa) Graceful Failure Brittle Failure Percent Strain (%) Brittle Failure 10 Cryogenic Insulation Technologies

11 Efficient Insulation Application CTD-1202X pre-ceramic resin - Reduces resin cost by ~75% - Qualification at FermiLab for use in accelerator magnets Continuous insulation of wires and cables - Reduces cost of insulation application - Simplifies magnet construction - Reduces insulation thickness by 50% Future plans - Process scale-up - Fabricate prototype devices Insulation Rutherford cable 11 Cryogenic Insulation Technologies

12 Insulation Characterization Mechanical Test Capabilities - 22 and 100 kip load frames - Testing from 4 to 473 K - Test fixtures Designed to ASTM Standards Analytical Tools - Dynamic Mechanical Analysis - Differential Scanning Calorimeter - Optical microscopy Electrical Testing - Dielectric breakdown voltage - Dielectric withstand voltage 12 Cryogenic Insulation Technologies

13 Collaborating with CTD Insulation Expertise - Material selection - Processing procedures and specifications Magnet Insulation Needs - Materials - Testing - Processing - Application Cooperative Research - Industry worldwide - US national laboratories - US government Enabling Technology for the Superconductor Industry 13 Cryogenic Insulation Technologies