1. Christine Darve ESS deputy WP leader Pierre BOSLAND, CEA Saclay External WP5 leader With special Acknowledgment to Nuno Elias (ESS) and Gilles Olivier (CNRS) June 23, 2015 Saclay WP05 Program Plan – Scope and Schedule Kick-off Meeting SRF Elliptical Cavities

2. Goal of the meeting By the end of the day, the four parties should: -Review the cavity life-cycle and partner’s responsibilities -Review the technical requirements  All -Review the physical and functional interfaces  CEA and ESS -Review the acceptance criteria at each “partner’s transfer flagpoint”  All -Review of the main risks  All -Identify and set interim milestones in accordance with the ESS schedule  All NB: Validation of the identified items will be completed during specific medium-beta and high-beta kick-off meetings. 2 The goal of this meeting is to build-up the SRF collaboration to support the construction of the SRF elliptical cavity Linac at the ESS. Collaborative effort between four parties/partners: ESS; CEA/CNRS; INFN; STFC

3. 3 Elliptical Cryomodules as a collaborative effort Beam power (MW)5 Beam current (mA)62.5 Linac energy (GeV)2 Beam pulse length (ms)2.86 Repetition rate (Hz)14 WP5

4. Framework of the cryomodules life-cycle Cavity Cryomodule Technology Demonstrators: 1 x Medium-beta, M-ECCTD<= FR-SW agreement 1 x High-beta, H-ECCTD<= CEA/CNRS Early In-Kind Production of cavities of the series with RF tests: 36 x Medium-beta cavities<= LASA In-Kind 84 x High-beta cavities<= STFC In-Kind Production of all other cryomodule components (incl PC, CTS):<= CEA In-Kind Cryomodule assembling:<= CEA In-Kind Low-power tests of 3 first medium and high-beta cryomodules<= CEA FR In-Kind Transport of cryomodules from assembly hall to ESS: 9 x Medium-beta cryomodules <= STFC In-Kind 21 x High-beta cryomodules <= STFC In-Kind 4

5. Cavity Production Transport to CEA Assembly in Cryomodule Acceptance Test in VC Acceptance Test @ CEA- in Cavity life-flow process and criteria list to be discussed and P6 to be updated * Possible “partner’s transfer flagpoint” * Transport to ESS Acceptance Test @ CEA- out * Acceptance Test @ ESS-in High Power Test @ ESS Acceptance Test  Tunnel Ready For Installation In tunnel INFN/STFC ESS/STFC CEA

6. Framework of the cryomodules life-cycle Cavity Cryomodule Technology Demonstrators: 1 x Medium-beta, M-ECCTD<= FR-SW agreement 1 x High-beta, H-ECCTD<= CEA/CNRS Early In-Kind Production of cavities of the series with RF tests: 36 x Medium-beta cavities<= LASA In-Kind 84 x High-beta cavities<= STFC In-Kind Production of all other cryomodule components (incl PC, CTS):<= CEA In-Kind Cryomodule assembling:<= CEA In-Kind Low-power tests of 3 first medium and high-beta cryomodules<= CEA FR In-Kind RF and cryogenics for low power testing Transport of cryomodules from assembly hall to ESS: 9 x Medium-beta cryomodules <= STFC In-Kind 21 x High-beta cryomodules <= STFC In-Kind 6

7. Recall: In-Kind Agreements to be completed by Fall 2015 –> Technical Annexes to complete prior … “SCHEDULE [xxxxxxx] TO THE IN-KIND CONTRIBUTION AGREEMENT SIGNED BETWEEN ESS AND PARTNER ON DATE … 4.3.1 Kick-off meeting The main objective of the kick-off meeting is to confirm the mutual understanding of the Scope of Work, including the applicable specifications. In particular the partners shall:  Present and review the project plan, schedule and WBS (baseline proposals)  Introduce the key resources and team members,  Review the risk register and establish an agreed prioritization of risks  Complete the milestone definition list  Make a technical presentation of the proposed solution,  Present management plans as applicable.” 7 NB: Risk management (technical and project) to be developed by the 4 parties, but ultimately aiming at the ESS layout..  See TAC12 Request

8.  S. Bousson, Workshop on Requirements Conformance for SRF Cryomodules, Lund, 15 th Oct. 2014 Spoke cryomodule overall life cycle Appro Niobium Fabrication Cavité Traitement surface Cavité Assemblage cavité Salle blanche Test en CV COMPONENT PHASE Export / delivery Test / validation Préparation/ assembly SUpply/ Production NiobiumCavitiesCouplers vessel Vacuum Cryomod. Full. compon.. Cryomod. string Cavity CTS… Transport -> site assemblage Transport -> Fabriquant cavités … … … … Fabrication Enceinte Cryomodule Transport -> site assemblage Appro Compos. cryomodule Transport -> site assemblage Assemblage train cavités Transport -> site assemblage Fabrication SAF Assemblage SAF Test à chaud SAF Transport -> site assemblage Assemblage cryomodule Test à chaud Transport -> Uppsala Fabrication Coupleur Préparation salle blanche coupleurs Conditionn- ement coupleurs Transport -> site assemblage

9. Technical performances 9 Selected requirements: Frequency: 704,42 MHz Nb superconducting cavities at 2K: medium beta cavities: 6 cell at  geo =0,67 high beta cavities:5 cell at  geo =0,86 Nominal accelerating gradients Eacc corresponding to 45MV/m peak field :  16,7MV/m : medium beta cavities  19,9MV/m : high beta cavities Max RF power dissipation at nominal gradient corresponding to Q 0 =5 10 9 (RF duty cycle: 4,7%): – Medium beta cavities:4,9W – High beta cavities:6,5W Maximum RF peak power: 1,1MW No HOM coupler: All higher order modes (HOMs) shall be at least 5 MHz away from integer multiples of the beam-bunching frequency (352.21 MHz) for any HOMs whose resonant frequencies are below the cut-off frequency of the beam-pipe.” The level-4 requirements for the medium and high beta cryomodules are listed in the DOORS management system (Dynamic Object-Oriented Requirements System). Conformance of the design with these requirements has been presented at a-TAC (October 2013).

10. Cryomodule design to be validated with the Technology Demonstrators  Similar to CEBAF/SNS cryomodule concept with 4 cavities per cryomodule  Common design for medium (6 cells) and high beta (5 cells) cavities  Similar to CEBAF/SNS cryomodule concept with 4 cavities per cryomodule  Common design for medium (6 cells) and high beta (5 cells) cavities Proton Beam Jumper connection Magnetic shielding Cavity with Helium tank Diphasic He pipe Thermal shielding Regulation He valve Intercavities belows Vacuum valve Spaceframe support Heat exchanger Alignement fiducial G. Olivier

13. Cavity Production Transport to CEA Assembly in Cryomodule Acceptance Test NC Report NC Minor NC Minor NC Repairable at CEA NC Repairable at CEA NC Report NC Not Repairable at CEA NC Not Repairable at CEA Repair Out of Work Flow process and criteria list to be discussed this afternoon * “partner’s transfer flagpoint” * *

14. Flow process and criteria list to be discussed this afternoon

15. Elliptical Cavities & Cryomodules Master Planning

16. M-ECCTD CDR review decision H-ECCTD CDR review decision 2) Power couplers contract awarded RF power source ready for coupler processing Cryomodule components contract awarded Planning Ready For Installation OK with ESS schedule: 03/09/18 => 02/05/19 1CM/month Planning Ready For Installation OK with ESS schedule: Q1 + Q2 2021: installation of HBL n° 1 to 11 Q1 + Q2 2022: Installation of HBL n° 12 to 21 1) Mb cavities contract awarded 1) Hb cavities contract awarded Elliptical Cavities & Cryomodules Planning

17. Interim Milestones for In-Kind agreement 17 Kick-off meeting Preliminary Design Review Critical Design Review

18. 18 Top risks – View from WP05 Some comments and recommendations for the TAC 1 st April 2015: The success oriented schedule presented leaves almost(?) no room for iteration of any of the sub-components or the module itself. Thus an extremely careful self-assessment of technical risks is to be made. There will be no feedback from first cryomodule power testing on the assembly of the following cryomodules, and this is a serious concern The IKC concept for the cryo module and its‘ components requires precisely defined interfaces. Include in all IK negotiations aspects for technical, logistical and contractual issues. Accelerator redesign requires very high nominal accelerating gradients (E peak = 45MV/m) Regarding manufacturing geometry accuracy, analysis should be performed to determine the geometric tolerance to escape the HOMs from the harmonics with a minimum spacing of 5 MHz Annual Review 23 rd April 2015

19. Medium -beta cavities – INFN - Top risks Top risks – Availability of qualified companies at the time of the contract placement – Modification of the boundary conditions for cavities during the future development of activities 19 Annual Review 23 rd April 2015

20. High-beta cavities – STFC - Top risks 20 Annual Review 23 rd April 2015

21. Elliptical cavity cryomodules Summary 21 The prototype cryomodules M-ECCTD and H-ECCTD should be used to develop expertise and industrialization process. This planning is success oriented with major risks identified The coordination between the In-Kind partners has to be quickly placed to start the work as soon as possible: Coordination between CEA, CNRS, INFN, STFC and ESS ESS to establish a "partnership with INFN and STFC, which will permit to make use of the best European competences in the field of SRF".