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EuCard-WP7-HFM Collaboration Meeting – UniGe, Geneva 08.06.2010

EuCARD WP 7 – High Field Magnets Task 2 – Support studies Task 7.2.1 – Radiation certification Status report. Jaroslaw Polinski, Eliza Roszak , Maciej Chorowski Faculty of Mechanical and Power Engineering. EuCard-WP7-HFM Collaboration Meeting – UniGe, Geneva 08.06.2010. Outline.

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EuCard-WP7-HFM Collaboration Meeting – UniGe, Geneva 08.06.2010

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  1. EuCARD WP 7 – High Field MagnetsTask 2 – Support studiesTask 7.2.1 – Radiation certification Status report Jaroslaw Polinski, Eliza Roszak, Maciej Chorowski Faculty of Mechanical and Power Engineering EuCard-WP7-HFM Collaboration Meeting – UniGe,Geneva 08.06.2010

  2. Outline • Task 7.2.1 progresses • Task 7.2.1 plan update proposition • Conclusions

  3. Task 7.2.1 - Progresses • Determination of radiation types, doses and energy  • Time scale: month 1-3 • Action taken: • Mini Workshop of Accelerators Radiation at CERN 02.12.2009 • Regular Radiation Working Group meetings (4 so far) • Selection of the Institute capable of the irradiation • Time scale: month 4-6 • Action taken: • Mini Workshop of Accelerators Radiation at CERN 02.12.2009 • Visit in The Andrzej Sultan Institute for Nuclear Studies (IPJ) - Swierk (POLAND)17.03.2010 • All information concerning IPJ irradiation possibility are collected

  4. Task 7.2 - Progresses • Determination of irradiated sample tests scope • Time scale: month 1-3 • Action taken: • Review of literature concerns Nb3Sn coils insulation material exposed to radiation • Determination of a possible candidates for EuCARD dipole coil insulation • Radiation certification tests matrix preparation • Action needed: • Conversion method of doses of full energy spectrum to doses of narrow energy range (available in IPJ) • CERN Safety Group contact • PWR has involved a new person • Review of mechanical and electrical tests standards for samplesgeometry determination • Preparation of the irradiation specification • Irradiated sample test set-up preparation  • Time scale: month 6 – 12 • Action taken: • Review of literature concerns Nb3Sn coils insulation material exposed to radiation

  5. D42 End M33 End M42 Task 7.2.1 plan

  6. Task 7.2.1 plan update proposition

  7. Conclusions • Some minor delays in primary plan realization are occurred, but keeping the plan is still possible • All information concerning IPJ irradiation possibility are collected • The most critical issue for „Today”: conversion method of doses of full energy spectrum to doses of narrow energy range • Irradiation specification is needed ASAP for: • determination sample irradiation costs in IPJ • start of the irradiation set-ups design

  8. Standards for insulation specimens tests Jaroslaw POLIŃSKI, Eliza ROSZAK

  9. Eucard-WP7 HFM Wokshop on insulator irradiation 2 dec. 2009 - F.Rondeaux

  10. BS EN ISO14130:1998 Fibre-reinforced plastic composites - Determination of apparent interlaminar shear strength by short-beam method BS EN ISO14130:1998 This International Standard specifies a procedure for determining the apparent interlaminar shear strength of fibre-reinforced plastic composites by the short-beam method.

  11. BS EN ISO14130:1998 apparent interlaminar shear stress, the interlaminar shear stress acting on the neutral plane of the specimen apparent interlaminar shear strength, the value of the apparent interlaminar shear stress at failure or when the load reaches a maximum value

  12. BS EN ISO14130:1998

  13. BS EN ISO14130:1998 At least five test specimens shall be tested When it is not possible or not desirable to use the standard specimen, the following rules shall be observed:l = 10h, b = 5h Depending upon the material being tested, specimens of 2 mm thickness may fail by shear or experience compression failureunder load or exhibit extreme deflection without shear failure As specimen thickness (height) is increased, the probability ofcompression failure under load increases

  14. BS EN ISO14130:1998

  15. BS ISO 15024:2001 Fibre-reinforced plastic composites — Determination of mode I interlaminar fracture toughness, GIC, for unidirectionally reinforced materials BS ISO 15024:2001 This International Standard specifies a method for the determination of mode I interlaminar fracture toughness (critical energy release rate), GIC, of unidirectional fibre-reinforced plastic composites using a double cantilever beam (DCB) specimen

  16. BS ISO 15024:2001 mode I interlaminar fracture toughness critical energy release rate GICthe resistance to the initiation and propagation of a delamination crack in unidirectional fibre-reinforced polymer matrix composite laminates under mode I opening load mode I crack opening the crack-opening mode due to a load applied perpendicular to the plane of delamination using the double cantilever beam specimen

  17. BS ISO 15024:2001

  18. BS ISO 15024:2001 Specimens

  19. BS ISO 15024:2001 Specimens Other specimen thicknesses may be used, depending on the tensile modulus of elasticity and the anticipated interlaminar fracture toughness of the specimen. Other specimen widths between 15 mm and 30 mm may be used. Increasing the length of the specimen is not critical. However, shortening is not recommended because it will reduce the maximum delamination length that can be investigated and thus yield too few data points for the analysis A minimum number of five specimens shall be tested.

  20. EuCARD WP 7 – High Field MagnetsTask 2 – Support studiesTask 7.2.2 – Thermal modelsStatus Raport Jaroslaw Polinski, Eliza Roszak, Maciej Chorowski Faculty of Mechanical and Power Engineering EuCard-WP7-HFM Collaboration Meeting – UniGe,Geneva 08.06.2010

  21. Outline • Task 7.2.2 progresses • Task 7.2.2 plan update proposition • FRESCA2 updated structure review • Conclusions

  22. Task 7.2.2 – Progresses • Selection of the insulation materials  • Time scale: month 1-3 • Action taken: • Determination of a possible candidates for EuCARD dipole coil insulation • Preparation of the insulation materials sample • Time scale: month 4-9 • Action taken: • CERN will get Cyanate Ester (AroCy L10) • ITER people can help contact proper producer • Depending on ingredients availability, RAL will produce epoxy resin based insulation sample • Insulation material samples will be produced in flat surface version (better from the measurement method point of view) • Sheets thicknesses (for drum thermal tests) are preliminary defined, need to be confirmed by producer (RAL)

  23. Task 7.2.2 – Progresses • Thermal characterization of the insulation materials • Time scale: month 7-18 • Status: • The drum method for thermal characterization is selected • CEA is ready to start the tests - insulation samples are needed • PWR cryostat is manufacturing, ready for test – beginning of Sep 2010 • 6 sample holder per Institution is considered – to accelerate the thermal test program work • Preliminary thermal model of the coil • Time scale: month 7-18, • Action taken: • Mini-Workshop on Thermal Modeling and Thermal Experiments for Accelerator Magnets – CERN 30th Sep – 1st Oct 2009 • Regular Thermal Working Group meetings (2 so far) • M12 milestone „Preliminary thermal model of the coil” is delivered • Updated FRESCA2 magnet specification, with detailed structure materials, working and cool down conditions, has been prepared • CEA Saclay should already start the updated structure thermal modelling

  24. D(36) Task 7.2.2 plan

  25. Task 7.2.2 plan update proposition

  26. FRESCA2 magnet specification for thermal modelling Shrinking cylinder (Al alloy) Iron yoke lamination - 5.8 mm thick low carbon steel (Magnetil™) Pull-bars (Al alloy) Ironpads lamination - 5.8 mm thick low carbon steel (Magnetil™) Steel rods (for assembly) Magnet coils

  27. FRESCA2 magnet specification for thermal modelling Cooling Cu U-tube Stainless steel plate Coil interlayer spacer (G10 „fishbone” structure)

  28. FRESCA2 magnet specification for thermal modelling Each 10 laminations above the coil Grooves (start parameters) - 0.5 mm wide and 0.5 mm deep Stainless steel plate longitudinal grooves connected with 1mm diameter holeseach 5mm

  29. FRESCA2 magnet specification for thermal modelling Double pancake coil packs

  30. Conclusions • Keeping primary Task 7.2.2 plan seems to be realistic • Milestone M12: „Preliminary thermal model of the coil” is delivered • CEA Saclay is ready for thermal test, PWR will be ready at the begging of Sep 2010 • Updated specification of the FRESCA2 magnet has been released • The most urgent issue – production of insulation samples for thermal tests

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