French In-Kind Contribution to PIP-II Linac Construction : LB650 at CEA

1. French In-Kind Contribution to PIP-II Linac Construction : LB650 at CEA Olivier NAPOLY on behalf of CEA, DRF/Irfu 25 June 2018 France/CEA IKC: LB650 Cryomodules

2. CEA Saclay research center Irfu Saclay&Orme 50 000 m2

3. DACM technological infrastructures (25 000 m2)

4. CEA: Interest in PIP-II constructionfrom APRIL 9, MEETING at FNAL • CEA has the technical infrastructure and capability, and will have a unique experience totake over the production of the 11 PIP-II LB650 cryomodules. • This venture has been discussed at the technical level between CEA and FNAL since the ‘DOE Independent Reviews’ in June 2015 and December 2017. • This venture aligns with the participation of Irfu in the DUNE collaboration. • Technically, this venture could encompass anything between • an ‘ESS-like’ contribution including: design and procurement of all 11 module components (e.g. RF couplers, tuners, cryostats, magnetic shielding, etc.) except cavities; assembly of 11 strings and modules; up to 11 RF modules tests; QA-QC of all the above. • an ‘Eu-XFEL’ contribution consisting of assembly 11 string and module assembly; a limited number of procurements (e.g. magnetic shielding, superinsulation, etc.); QA-QC of the above. • CEA favors the scientifically more ambitious option A. • More discussions are needed to clarify the scope and sharing of work regarding • Design of Cryomodule and RF coupler • RF tests and qualification of modules

5. LB650 Cavities and Cryomodules • Specific plans to be developed, but general vision is: • Dressed/Qualified Cavities • Lab-sourced prototypes • Indian industry sourced production • Lab Prep&Test • CM Integration • Possible CM Qualification • Overseas Shipment • Dressed/Qualified Cavities • Established EU Vendors • Industrial Processing • Lab qualification • Cryomodule Components • Established EU Vendors • RF couplers • Other opportunities CM Qualification

6. Scope of work (1/4) CEA will take over the responsibility of the production of the 11 LB650 cryomodules with the exception of the 33 elliptical 5-cell RF cavities. The cavities will be designed, fabricated, qualified and delivered to CEA under the responsibility of Fermilab. They will arrive after their RF acceptance test in their Helium vessel with their field probe, but without tuners and main couplers. CEA scope of work is defined along 3 phases: I. Design of LB650 cryomodule, couplers, tuners and associated assembly tooling. II. Fabrication of one LB650 prototype cryomodule III. Fabrication of ten LB650 construction-phase cryomodules

7. Scope of work (2/4) • Phase I: Design of LB650 cryomodule, couplers, tuners and associated assembly tooling. • CEA will be responsible for the cryomodule design, and the design of the associated high-power couplers and cavity tuners. CEA will be encouraged to adopt the cryomodule design concept developed for the HB650 cryomodule by Fermilab, with suitable modifications to enhance manufacturability utilizing CEA infrastructure, while retaining alignment with the TRS. Once the cryomodule design is accepted by Fermilab, CEA will determine modifications required to existing infrastructure to support assembly of LB650 cryomodules. It will be important to keep these activities coordinated with the INFN and DAE efforts on the cavity design and production. Fermilab will hold responsibility for the required coordination. Approval of CEA-developed designs will be the responsibility of Fermilab.

8. Scope of work (3/4) • Phase II: Fabrication of one LB650 prototype cryomodule • CEA will proceed with the fabrication of the prototype cryomodule, including the associated high-power couplers and cavity tuners, following Fermilab’s design approval. The cryomodule integration at CEA will utilize qualified jacketed cavities originating from INFN and DAE. All other components will be procured by CEA after appropriate prototyping reviews are organized with Fermilab. Following assembly, the prototype cryomodule will be tested at CEA-Saclay with the participation of Fermilab to the test definition and measurement. Following successful testing and approval by Fermilab, the prototype cryomodule will be shipped to Fermilab for testing. Successful testing at Fermilab will condition the approval of the transportation plan, equipment and instrumentation.

9. Scope of work (4/4) • Phase III: Fabrication of ten LB650 construction-phase cryomodules • Following successful testing of the prototype cryomodule at Fermilab, and approval of any subsequent design modifications, CEA will proceed with the fabrication of ten LB650 cryomodules, including the associated high-power couplers and cavity tuners. The cryomodule integration at CEA will utilize qualified jacketed cavities originating from INFN and DAE. All other components will be procured by CEA after appropriate production reviews are organized with Fermilab. Following assembly, an appropriate set of 3 to 10 cryomodules will be tested at CEA-Saclay with the participation of Fermilab to the test definition and measurements. Following successful testing and approval by Fermilab, completed cryomodules will be shipped to Fermilab for testing, and subsequent installation into the PIP-II linac.

10. Documentation Documentation All the required documentation will be posted and available in the FermilabTeamCenter system.

11. System interfaces (1/3) • Cryomodule Engineering and Design • An engineering and design verification effort has been ongoing at Fermilab for several years. It has led already to a pre-conceptual design of the cryomodule (e.g. strongback), and even to the prototyping of couplers and tuners. The transfer of the design activity to CEA will require a careful formulation of the output elements from the Fermilab effort to be used as input for CEA work, and • an organized transition process at the beginning of Phase I. • Cavities • The cavities will be delivered to CEA under the responsibility of Fermilab. They will arrive after their acceptance test in their Helium vessel with their field probe. Fermilab will communicate to CEA the authorization to use the cavities together with in the string configuration in advance to the start of the string assembly. Problems arising from non-conformities or schedule delays will be discussed between Fermilab and CEA exclusively.

12. System interfaces (2/3) • Cryomodule Harmonization • The harmonization of key features, like cryogenic, alignment and mechanical support elements, throughout the five PIP-II cryomodule types, is wanted by the PIP-II project. It also encompasses assembly tooling and procedures. The implementation and monitoring of the desired harmonization will require an organized process between CEA and PIP-II throughout the whole Phase I and the beginning of Phase II, when assembly procedures are finalized. • LB650-HB650 components • The LB650 and H650 cryomodules, while differing by the number and length of RF cavities, share many similar features, identical concepts and even include some identical components like the RF couplers and cryogenic valves. Therefore, the design and prototyping efforts led in parallel at Fermilab for HB650 and at CEA for LB650, will need to be coordinated to optimize their commonalities to the right level. To minimize the cost of the production phase cryomodules, the sharing of the procurement and testing of some components should also be considered and foreseen.

13. System interfaces (3/3) • Transportation • Transportation of LB650 cryomodules over the Atlantic will be extremely challenging and will require mechanical studies and transport tests between France and USA. The responsibility and the conditions of transport will have to be discussed and coordinated between CEA and Fermilab. In the case where UK will contribute with the assembly and transportation of the production phase HB650 cryomodules, their collaboration will also be profitable, given the superior size, weight and complexity of the HB650 cryomodule over the LB650 ones.

14. Technical interfaces Technical Interfaces The complete set of technical interfaces of the LB650 cryomodules will be described and provided by Fermilab as an input to the Phase I. This document will initiate the Interface Control Document.

15. Risk Analysis • Risk Analysis • The Risk Analysis is ongoing and will be formulated in the Risk Register at the beginning of Phase I. • The main risks identified so far are as follows: • R1: Cavity delivery delays • R2: Cryomodule procurement delays • R3: Assembly non-conformances and delays • R4: RF test failures • R5: Feasibility of cryomodule transportation over the Atlantic • All these risks have been or will be met by during the production of the ESS cryomodule, except for R4 which is a new risk never met in any project so far.

16. Cost and Schedule Cost and Schedule The detailed costing of the CEA In-kind Contribution is being work out.

17. Schedule: First draft Lia’s comment: We need to better align these dates with the project dates, and be prepared to resolve any issues that may arise (shortage of resources, facilities availability, etc.)

18. DEliverables: First draft • D1. Management Plan, Quality Assurance Plan, and Production Plan 30/06/2019 • D2. Final Design Review of the LB650 prototype cryomodule, including assembly and plans 31/12/2020 • D3. Delivery of one LB650 prototype cryomodule, including QA/QC documentation 31/12/2022 • D4. Final Design Review of the LB650 construction-phase cryomodules, including assembly plans 30/06/2023 • D5. Delivery of ten LB650 production phase cryomodule including QA/QC documentation 30/06/2026

19. LB650.CEA WORK Breakdown Structure (1/2) CourtesyJ. Ozelis

20. LB650.CEA WORK Breakdown Structure (2/2) Courtesy J. Ozelis

21. 650 MHz Cryomodule: where are we ALONG THIS ROUTE? France/CEA IKC: LB650 Cryomodules ? ?

22. Engineering Management Timeline France/CEA IKC: LB650 Cryomodules

23. Engineering Documentation: LB650 France/CEA IKC: LB650 Cryomodules

24. Engineering Documentation: LB650 Cavity France/CEA IKC: LB650 Cryomodules

25. Engineering Documentation: LB-HB650 Couplers France/CEA IKC: LB650 Cryomodules

26. Engineering Documentation: LB-HB650 Tuners France/CEA IKC: LB650 Cryomodules

27. Engineering Documentation: LB650 CM France/CEA IKC: LB650 Cryomodules

28. LB650: Discussion points • Today, we need to discuss and clarify the following points: • Design of cryomodule • Who is responsible for producing the LB650 Technical Design Report ? • If CEA takes part in the TDR: • where do we start ? HB650 module, ESS module, others… • what are the organizational interfaces ? • what are the technical interfaces ? • Design of RF couplers: is the design ready for fabrication ? • Number (1-11) and scope (pulsed/CW qualification) of module tests ? • Transportation: which lab will manage the shipment tooling and contract. • Which collaborations could we engage early ? • Review of coupler design, production of 2 prototypes and RF tests. • Participation in the PIP2IT commissioning • Participation in the PIP-II beam protection system • The last two are somewhatdisconnectedfrom the LB650 construction.