The SPL Short Cryo -module: Status Report

1. The SPL Short Cryo-module:Status Report V.Parma, CERN, TE-MSC On bahalf of the Cryomodule development team • SPL seminar December 2012, 6-7 December 2012, CERN

2. The actors on stage... ESS/CERN Fellow ESS/CERN Fellow ESS/CERN Fellow ESS/CERN Fellow

3. SPL Cryomodule Workspace https://espace.cern.ch/spl-cryomodule/default.aspx

4. SPL Cryomodule Working Group 8 meetings in 2012 (from March on)

5. SPL Cryomodule exhibition • (CERN, French in-kind meeting, June 2012)

7. Assembly sequence 1- String of cavities outside the clean room 2- Mounting of the magnetic shields 4- Mounting of the cryogenic distribution 3- Mounting of the tuners and inter-cavity connections 5- Mounting of the coupler cooling line 6- Mounting of the thermal shield 7- Insertion in the vacuum vessel 8- Closing the vacuum vessel Design by CNRS-IPNO (S.Rousselot)

8. 2 parts vacuum vessel • Material is low-carbon steel (LHC type) • Vessel as magnetic shielding: need for degaussing? • Flanges in St.steel (304L)

9. Mechanical analysis at CNRS 1.2mm rattrapé par 2 vis contigües Loadswhenclosing 242mm Effect of a gap atclosure CNRS-IPNO, P.Duchesne, P.Duthil

10. …and at CERN Mounting of the lid: effect of flat flanges shape imperfections; CERN approach Deformed shape: Load case 1 Load case 2 See Paulo Azevedo’s talk

11. Pressure relief devices • First risk analysis made • HSE now in the loop (C.Parente), several meetings took place • Sizing of safety relief devices: • Burst disks to protect helium circuits • Pressure relief plate to protect insulation vacuum vessel See Paulo Azevedo’s talk

12. Vacuum vessel detailed design • Specification detailed drawings in preparation at CNRS-IPNO • Drawings approval in progress • Consultation of companies started • Procurement to be launched beginning 2013 by CNRS-IPNO

13. Cold magnetic shield Status: • Following feedback from RF (T.Junginger), a re-design has been proposed by CNRS and approved, ready for detailed drawings Double layer Cold magnetic shield Coupler side Tuner side Design by CNRS-IPNO (S.Rousselot)

14. Cryogenic distribution 2 phase tube (line X) LHeLevel gauge Pumping line (XB) z y To cold box and SM18 Vapourscollector Liquid container x Courtesy CNRS-IPNO (S.Rousselot, P.Duthil)

15. Valve box and cryogenic scheme in SM18 • Control valves grouped in a single valve box • Valve box needed also for interfacing CM to cryogenic distribution in SM18 • Overpressure safety devices

16. Valve box Status: • Conceptual design finished • Valves being ordered by TE-CRG • Heater on the thermal shield will warm up thermal shield helium to the CM needs (50K) design in progress Vacuum vessel Vacuum barrier From SM18 To CM Thermal shield Courtesy CNRS-IPNO (S.Rousselot, P.Duthil)

17. Cryo valve specs • Coupler cooling valve: • Use : Liquid/gas helium • Diameter: DN2 • WEKA standard design: h=875mm - PN25 - Standard sealing to outside - no thermal contact, no G10 spindle rod • Po=normally closed actuators • Kv max as controlled valve: 0.15m3/h • Required max. Kv at 100% stroke: 0.06 m3/h (common), 0,02 m3/h (single) • Required min. Kv at 5% stroke: 0.002 m3/h • Equal percentage • Quantity: 1 • JT valves (common and single valves): • Use : superfuid helium • Diameter: DN4 • WEKA standard design: h=875mm - PN25 - no thermal contact, no G10 spindle rod • Po=normally closed actuators • helium guard seal for subatmospheric applications • Kv max as controlled valve: 0.6m3/h • Required max. Kv at 100% stroke: 0.1 m3/h (common), 0,02 m3/h (single) • Required min. Kv at 5% stroke: 0.001 m3/h • Equal percentage • Quantity: 4 • Cool-down valves: • Use : liquid/gas helium • Diameter: DN4 • WEKA standard design: h=875mm - PN25 - Standard sealing to outside - no thermal contact, no G10 spindle rod • Po=normally closed actuators • Kv max as controlled valve: 0.6m3/h • Required max. Kv at 100% stroke: 0.18 m3/h (common), 0,02 m3/h (single) • Required min. Kv at 5% stroke: 0.004 m3/h • Equal percentage • Quantity: 4 9 cryo valves Needs agreed with TE-CRG (R.Van Weelderen)  TE-CRG can start procurement

18. Cavity vacuum valves • Choice discussed with TE-VSC (G.Vandoni)ready for procurement

19. Cryomodule instrumentation ~100 T gauges 10 Elec.heaters 4 He level gauges 4 Piezos, tuners,HOM Optical Wire Position Monitor Pressure gauges

20. Bunker integration studies at CERN SM18 bunker RF distribution Cryo-module Valve box Cryo line interface Study by P. Martinez Yanez and B.Riffaud, EN-MME

21. Bunker integration studies at CERN Study by P. Martinez Yanez and B.Riffaud, EN-MME Pending work: • Full integration study (access, services, safety evacuation of He, …) • Design and construction of an inclination table (0%-2%) for the cryomodule • Study the opening of the CM top part of vessel for in-situ maintenance and construction of the handling equipment CRYOMODULE 2% INCLINATION SPECIAL LENGTH CORRESPONDING TO CRYOMODULE ANGLE

22. Status of supporting system mock-up See P. Azevedo’s and R. Bonomi’stalks

23. Master Schedule Preparation of SM18 infrastructure (cryogenics, RF, clean-room) Cavities production Cavities processing/RF testing RF couplers Clean room assembly of string Cryomodule (& assy tooling) design Cryomodule fabrication Cryomodule assembly Start cryomodule RF testing

24. Summary 2012, Outlook 2013 • Notable progress in the design of the CM this year: • Vacuum vessel: almost ready for procurement • Magnetic shield: design finalized • Cryogenic piping: design well progressed • Thermal shield: design in progress • Cryogenic and vacuum valves: choice made, procurement can start • Instrumentation: preliminary list • Assembly tooling: • Concepts only: work needs to start now • Valve box: • Conceptual design made • Major milestones for 2013 • Launch procurement of vacuum vessel , early 2013 • Other parts to be ordered by mid 2013 • Design of assembly tooling by mid 2013