ESS Cryomodule Status Meeting – Introduction | | Christine Darve Introduction to Cryomodules for the ESS 2013 January, 9 th Christine Darve

ESS Cryomodule Status Meeting – Introduction | | Christine Darve The ESS philosophy Vision & Raison d’etre: Science for Society Mission: – Design, construct and operate the worlds-leading neutron source – Manage the company business Core Values: – Excellence; Openness; Sustainability ESS philosophy: – “Greenfield thinking on a greenfield site” – Limit risk with collaboration choices Goal: to deliver first neutrons before this decade is out  Goal oriented project

ESS Cryomodule Status Meeting – Introduction | | Christine Darve  98 % of the accelerator is superconducting Accelerator

ESS Cryomodule Status Meeting – Introduction | | Christine Darve Cryogenic distridution Cryomodule stakeholders and ESS Interfaces Cryogenic distribution Radio-frequency Beam Vacuum ESS cold linac integrators (e.g. cryogenics, vacuum, conventional facilities) Safety team Cryomodule designers Cavity package designers Control and instrumentation teams Component assembly teams Test teams ESS system engineer Survey experts Toolings (from designer to operation) Transport Beam Diagnostic Beam Optics

ESS Cryomodule Status Meeting – Introduction | | Christine Darve Cryomodule Functions  Cavity package (incl. SRF cavity, Ti helium tank, cold tuning system, and fundamental power coupler)  Cryomodule package : – The supporting and mechanical systems that interface the cavity packages in the test area or in the tunnel – The vacuum vessel, thermal and magnetic shieldings that insulate the cavity packages from the ambient conditions – The cryogenic distribution (hydraulic circuits, jumper connection) that interfaces the cavity packages with the cryogenic valve box (CTL, cryoplant) – The instrumentation, control valves and the safety devices

Cavity Cryomodule Technology Demonstrator (ECCTD) Fabrication and industrialization of the cavity and cryomodule: e.g. cleaning, tooling, assy procedures, QA; The performance of the RF design: e.g. characterize the cavity RF signature; validate RF results obtained in vertical cryostat; The performance of the thermal and vacuum design : eg. cool-down rate, operating conditions; heat loads; cooling scheme efficiency, leak tightness; The performance of the mechanical design: e.g. MAWP, stability, alignment; The safe operation of the cryomodules: e.g. process variables, control loops, operating modes, relieving system and interlock; Training: e.g. to assemble, to operate.  One Technology Demonstrator per cavity family to validate:

ESS Cryomodule Status Meeting – Introduction | | Christine Darve Construction phase (2013 – 2019)  By 2016: Technology demonstrators to proof the series production  By 2020: Install in tunnel the spoke and the medium beta elliptical cryomodules See presentation on life cycle by Pierre Bosland Design Procurement Conditioning and Assembly Test with cryogenics and RF environment Tunnel installation Commissioning Operation

ESS Cryomodule Status Meeting – Introduction | | Christine Darve Cryomodule Constraints Integrated hazards due to the operating environment: – Radiation environment (high intensity proton beam) – Cryogenic temperature: 2 K (Helium II), cryogenic vessel, pressure vessel – Sub atmospheric condition (31 mbar saturated), leak-tightness – Magnetic environment (14 mGauss) Staged Approach due to costing re-scope: 630 MeV protons to target 3Q 2019 Staged to nominal power will occur during shutdowns in

ESS Cryomodule Status Meeting – Introduction | | Christine Darve Elliptical cryomodule – flow process

ESS Cryomodule Status Meeting – Introduction | | Christine Darve Status Meeting - Outlines

ESS Cryomodule Status Meeting – Introduction | | Christine Darve Status Meeting - Outlines NB: This “status meeting” withstands for the Milestone 3 in the French-Swedish Cooperation Agreement