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Material irradiation tests meeting R2M, a spin-off from R2E

Material irradiation tests meeting R2M, a spin-off from R2E. Indico 639798 Elisa Guillermain elisa.guillermain@cern.ch. Meeting Agenda. Meeting introduction Why and how to perform irradiation tests on materials ? Sum up of last year meeting Indico 538951

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Material irradiation tests meeting R2M, a spin-off from R2E

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  1. Material irradiation tests meetingR2M, a spin-off from R2E Indico 639798 Elisa Guillermain elisa.guillermain@cern.ch

  2. Meeting Agenda • Meeting introduction • Why and how to perform irradiation tests on materials ? • Sum up of last year meeting Indico 538951 • TID irradiation tests performed in 2016-2017 • Invited speakers • Tests of beam-intercepting devices, Elvis Fornasiere (EN-STI-TCD) • Irradiation tests of stripping foil control elements, Pieter Van Trappen (TE-ABT-EC) • TE-VSC irradiation tests, Pawel Wojciech Krakowski (TE-VSC-ICM) • Irradiation test of cooling liquids, Petr Gorbounov (EP-UAT) • Irradiation test of Piezos, Mark Butcher and Pablo Serrano Galvez (EN-STI-ECE) • Meeting conclusions • Documentation and archiving • Future tests

  3. Material irradiation tests meetingMeeting Introduction Elisa Guillermain elisa.guillermain@cern.ch

  4. Radiation and materials • "Material" = full equipment, system or components, parts, bulk material, etc… • NOT beam intercepting devices • Subject to high fluencies and high displacement damage. • NOT electronics devices or components • Different radiation effects (single events) and different approaches for irradiation testing • Material radiation damage = Cumulative effects: • TID – Total ionizing dose • Modification of molecular bonds due to energy deposition • DD – Displacement damage (particle radiation only) • Atoms displacement within the material

  5. Why R2M becomes more and more critical ? • In the LHC -> HL-LHC • Intensity increase, 25 ns operation (was 50 ns) • Now higher beam gas interactions • Ion runs has high impact on TID • Expected radiation level for 2017 are ~10x higher than 2015

  6. Dose in the LHC BLM data Data for p-p 25 ns operation https://indico.cern.ch/event/632426/ Corinna Martinella (MCWG)

  7. Dose in the injectors • Intensity increase as well • Situation can be worst than in LHC • Cumulative effects • Old installations • Example of SPS • see EDMS1739976 • Luminosity and intensity increase • Increasing accumulated doses • More and more location and equipment concerned

  8. Consequences of radiation damage • Material damage can lead to : • Beam dumps (Machine reliability) • Downtime for unforeseen maintenance (Machine availability) • Heavy maintenance (YETS, LS) : ALARA, costs, etc… • Radiation resistance often depends on exact composition of material • Can be decades of difference in same material families • Aim is to chose the best resistant among available possibilities • Purpose of irradiation tests of materials • Estimate the equipment lifetime at a specific position • Ensure the RELIABILITY of installed equipment • Reduce machine downtime • Respect ALARA principles • Save time and money

  9. Role of the support team • Tests Coordination • Irradiation test scheduling and follow up • Combination of campaigns to perform together – saves money • Centralize the collaboration with external facilities • Contractual aspects • Clear overview of future tests for ensuring appropriate contracts volumes ! • Support for test preparation • To equipment groups and to service groups for assessing the radiation resistance of equipment to be installed in harsh environment. • Help for irradiation tests preparation • Administrative support • Documentation • Need for a responsible for each irradiation test project

  10. Irradiation tests preparation and WorkFlow • Irradiation test preparation • Identify the needs : • What needs to be tested ?Up to which dose ? How to characterize ? • Irradiation conditions and choice of the irradiation facility • Technical Specification • See the technical specification template EDMS 1807333 • After the technical specification is written, reviewed, approved : • Administrative aspects: Offer, order, invoicing • Irradiation performance and follow-up • Documentation : Reporting and Archive • Technical specification useful for all aspects • R2E team support at all steps ! • Profit from previous experience • More info from last year meeting on Indico 538951

  11. 2016-2017 irradiation tests on materials

  12. Irradiation tests at Fraunhofer • 61 CERN project managed by Fraunhofer from 2012 to 2016 • Both active tests at Fraunhofer and passive tests at BGS • All information of irradiation tests performed at Fraunhofer are on the dedicated Twiki • https://twiki.cern.ch/twiki/bin/viewauth/FraunhoferRadTests/WebHome • Includes • General information • Technical details of the facilities managed by Fraunhofer • Information for test preparation • List of irradiation tests performed / on-going / foreseen • Individual page for each project with corresponding documentation

  13. Recent irradiation tests at Fraunhofer In black: irradiation test performed In red: On-going irradiation tests Active tests at Fraunhofer in-house facilities Optical fibers test prepared and managed by Jeremy Blanc EN/EL Collaboration for administrative / contractual aspects

  14. Recent irradiation tests at Fraunhofer - BGS In black: irradiation test performed In red: On-going / ordered irradiation tests • BGS is a commercial irradiation facility (Not R&D) for passive tests • Advantage: • High dose rates allowing for reduced irradiation time • High volume available (pallet)

  15. Recent irradiation tests atIonisos • Not suitable for very high doses (1,5 months for 1 MGy) • Advantage: at driving distance, suitable for fragile samples or material subject to annealing

  16. Test plan • Simple test plan : • O’rings [NEO-16-002], Pawel Krakowski, TE/VSC • Samples are not put in the irradiation area all together to reduce the irradiated volume. • For ordering the irradiation at BGS: • Need to know the test plan as each step is to be ordered separately Irradiation time

  17. Test plan Dose steps to be defined for ordering procedure

  18. Test plan J+112 On top of irradiation time, delays occurs at each dose step !! Reduce the number of step = Reduce the campaign total duration

  19. Material irradiation tests meeting • Combination of irradiation campaigns / Test plan • Saves money • Reduce availability issues due to increasing number of tests • Needs to be prepared well ahead of time • Meeting continuation : Some examples • Tests of beam-intercepting devices, Elvis Fornasiere (EN-STI-TCD) • A different type of radiation damage ! • Irradiation tests of stripping foil control elements, Pieter Van Trappen (TE-ABT-EC) • TE-VSC irradiation tests, Pawel Wojciech Krakowski (TE-VSC-ICM) • Irradiation test of cooling liquids, Petr Gorbounov (EP-UAT) • Irradiation test of Piezos, Mark Butcher and Pablo Serrano Galvez (EN-STI-ECE)

  20. Material irradiation tests meetingMeeting conclusions Elisa Guillermain elisa.guillermain@cern.ch

  21. Documentation and archive • Documentation= Keep track of all aspect of the performed irradiation tests • Share knowledge and know-how, useful widely to the whole scientific community, as the Yellow books! • Documentation includes: • Test specification • Describe all aspects of the irradiation test, including desired conditions of the irradiation test • Useful as a working documents, for communication with the irradiation facility staff, and for CERN archiving • See template on EDMS1807333 • Irradiation report • Dosimetry, samples pictures, characterization tests if any from the contractor • In line with our requirements from the technical specification ! • CERN irradiation test report • Analysis and conclusion of characterization tests (suitability of equipment for installation ?) • Some CERN reports are missing ! I will send a request to get them… • If applicable, extensive campaigns report • All tobe archived in EDMS

  22. EDMS Archiving

  23. EDMS Archiving • Technical documents = • Technical specification • Irradiation test report • CERN irradiation test report • Can be linked to equipment group folder, or any other ! Naming convention to be defined ?

  24. Foreseen irradiation tests of materials

  25. Next combined campaigns at Fraunhofer • [NEO-16-002] – On-going • Up to 10 MGy • Started on 02.03.2017 • Foreseen end 22.06.2017 • [NEO-17-030] – Ordered • Up to 3 MGy • Increased volume • Will start when [NEO-16-002] is over • Foreseen end 09.2017 • [NEO-17-???] – under preparation • Up to 15 MGy most likely • Foreseen duration 5 months • Ends early 2018 Sprinkler heads Piezo passive Bake out Concrete GSM and TETRA components SPS Fire safety components Combination of 5 VSC projects + will include other tests

  26. Next testsFraunhofer

  27. Next irradiation tests at Ionisos

  28. New tests gathering • Why need to be aware of next tests ? • To prepare their combination / planning and save money • To prepare contractual aspects • Estimation of budgets • Cost estimate under approval • Draft technical specification for contract under review • Encouragement to the equipment groups to get in touch with the R2E support team for the foreseen tests • Encouragement to the equipment groups / section to identify a contact person as a responsible for irradiation tests of equipement

  29. Conclusion • Irradiation campaign shall be prepared well ahead of time • Preparation takes time • Technical specification as working document • Performance takes time • Characterization test and analysis takes time • Irradiation tests takes time to be performed • At 10kGy/h, 1MGy in 5 days and 10 MGy in 50 days • But 4 to 7 days in between each step ! • 10 MGy with 10 steps = almost 4 months • Coordination is important since only one pallet available for R&D at BGS • Ordering procedure for high dose tests : • Dose steps / test plan to be define well ahead of time • Workflow to be followed • First step is the technical specification

  30. Thanks for your attention And thanks to the speakers ! Any question is welcome

  31. Present situation – Irradiation tests

  32. Irradiation facilities

  33. Commercial gamma irradiation facilities • BGS in Wiehl, Germany • Pallet irradiation • 10 kGy/h, Large volume, 1MGy in 5 days • Fixed position • 30 kGy/h, Smaller volume, 1 MGy in 2 days • 100 MGy in 5 months • Also available, 1 kGy/h • Ionisos in Dagneux, Lyon • Fixed positions • 20 Gy/h to 1 kGy/h, 1 MGy in 45 days • Powering possible with long cabling distance (50m) • Driving distance • Fast pick up of samples post irradiation for annealing effects • Possibility for on-site characterization testing in between irradiation steps

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