Readiness of the Fresca 2 cryostat A Vande

Readiness of the Fresca 2 cryostat A. Vande Craen In collaboration with WUST institute Upgrade B-163 Production Readiness Meeting, 14/09/2018 Upgrade B 163 - PRM 1

Introduction Outer cryostat Holds magnet Operation: 1. 9 – 4. 3 K Pressurized helium (1. 3 bar) Stays cold all year long Inner cryostat Holds sample Operation: 1. 9 – 4. 3 K Pressurized helium (1. 3 bar) Warm-up, cool-down 1 -2 times a week (50 -100 samples/year) 14/09/2018 Upgrade B 163 - PRM 2

Collaboration Design by Wroclaw University of Science and Technology (WUST) through collaboration agreement KN 3369 • Collaboration agreement signed January 2017 • Amendment 2 (07/2018): Complete design by end of December 2018 • Conceptual design review in July 2017 • Detailed Design review in March 2018 • Weekly Skype follow-up meetings • Follow-up meeting at CERN in July 2018 Monthly status reporting to G. Riddone 14/09/2018 Upgrade B 163 - PRM 3

Project design Status • Outer cryostat : • Design completed (07/2018) • Drawings in production End 09/2018 Will be reviewed during production with GRAC members to insure fulfiling CERN requirements • Inner cryostat : Design being completed End 09/2018 • • • Transport restraints Sample blocking system Instrumentation line … Production of drawings to be started 10/2018 14/09/2018 Upgrade B 163 - PRM 4

Design Review Outcomes # Action/Recommendation Status 1 Verify cooling speed and temperature stability Completed 2 400 W on thermal shield compatible with clamping system Completed 3 Follow the design by analysis approach Completed 4 Complete non-linear buckling analysis Completed 5 Verify the number of openings for instrumentation Completed 6 Details concerning current lead integration Completed 7 Clarify the pressure scenarios after quench Completed 8 Increase margin between set pressure of quench valve and rupture disk Completed 9 Filling piece necessary ? Completed 10 Risk analysis concerning possible failure mode of lambda valves 11 Install a check valve at the end of thermal shield circuit Completed 12 Add a re-closable relief device with a set pressure below the PS on inner cryostat Completed 13 Recommendation to have safety devices connected to vessels via a dedicated port Completed 14 Is effective area of venting holes equivalent to area of vacuum vessel lift plate ? Completed 15 Study in detail the assembly sequence Completed 16 Solve the problem of thermal load due to the seal of the lambda plate Completed 17 Check the number, position and use of the different safety or relief valves Completed 18 Check the transients (stresses and deformations). Study the sequence of operations during the cooling and use of the system. Completed 19 Resume the detail design in a report for the Safety file of Fresca 2 On-going 20 Seismic risk analysis On-going 14/09/2018 On-going Upgrade B 163 - PRM 5

On-going points Lambda valves risk analysis Initially new design of lambda valve proposed risk analysis required • Potential large mass flow very large diameter with new design Back to “standard” design : lift plate • Seismic risk analysis Draft of risk analysis document ready for comment • All risks for personnel avoided by design (flexible elements between equipment) Remaining risk for equipment To be checked if acceptable • Design report for Project Safety File • • Final deliverables of the collaboration All calculation and design reports to be gathered at the end of design 14/09/2018 Upgrade B 163 - PRM 6

Interfaces • Valve box • • N 2 recovery line • • • Standard LHC flange Position defined by operators of test station Sample insert • • • Compatible with existing magnet support interface Positioning of magnet horizontal/vertical ( +/- 3 mm freedom) Rotation to align magnetic field to sample plane (+/- 2° freedom) Magnet Current leads • • • ISO-K flanges for pumping ISO-KF flanges (5 per cryostat) for instrumentation Magnet • • Agreed with TE-CRG (Welded connection, vacuum insulated line, vacuum barrier at outlet of cryostat) Drawing will be prepared once cryostat design finished Vacuum • • • Drawing prepared by TE-CRG Approved Compatible with existing inserts Detailed drawing being produced by EN-MME Ground • • Support to ease alignment of cryostat Can be blocked to fix position 14/09/2018 Upgrade B 163 - PRM 7

Procurement strategy • Cryostats procurement follow-up by M. Struik • One contract for fabrication of the two cryostats (inner and outer) • • • Based on WUST specification drawings Production of fabrication drawings Calculation report according to PED Fabrication: Helium vessel, Vacuum vessel and Thermal shield, Magnet insert CE marking Equipment made available by CERN • • • Cryogenic valves (procurement by TE-CRG) Inner cryostat G/L Heat exchanger (LHC design delivered by TECRG) MLI (procurement by TE-MSC) Cryogenic instrumentation (in collaboration with TE-CRG) Magnet current leads (TE-MSC) Magnet (TE-MSC) 14/09/2018 Upgrade B 163 - PRM 8

Market Survey (MS-4413) • Managed by M. Struik • Out on 18 th May 2018 • Official closing date: 15 th June 2018 • 14 firms showed interest Country Firms ES 4 FR 3 IT 3 PL 1 UK 3 14/09/2018 Upgrade B 163 - PRM 9

Project Planning Design review 21 st March MS dispatch 18 th May Design finalized (3 D model) Complete Drawings File IT dispatch Contract placement Cryostat at CERN 2019 2018 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2020 MS spec comity 21 st February MS draft ready 6 th February 14/09/2018 Upgrade B 163 - PRM 10

Summary • Interfaces to all other components finalized and agreed • Detailed design review was very useful in spotting out and correcting design issues • WUST team has been reinforced and design work sped up • Detailed Design based on 3 D model practically completed • Drawings are being produced in view of a final review end-October 2018 • IT is being prepared to be launched in November 2018 • Procurement strategy and roles well defined • Procurement phase already started with MS in May • Cryostat planned to be at CERN in November 2019 14/09/2018 Upgrade B 163 - PRM 11

Thank you for your attention 14/09/2018 Upgrade B 163 - PRM 12