Download - The SPL Short Cryo -module: Status Report
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
The actors on stage...System/Component/Activity Person(s) in charge Lab
Cavities/He vessel/tuner construction O.Brunner, O.Capatina, Th.Renaglia, F.Pillon, N.Valverde, M.Esposito, I.Aviles,G.Devanz
CERN
CEA-Saclay
SRF, magnetic shielding, Clean-Room activities, RF test stations (SM18)
E.Ciapala, T.Junginger, K.Shirm, J.Chambrillon, O.Brunner
CERN
RF Coupler E.Montesinos, G.Devanz
CERNCEA Saclay
Vacuum systems G.Vandoni CERN
Cryogenics, (cryo infrastructure SM18) U.Wagner, (O.Pirotte) CERN
Survey and alignment P.Bestman CERN
Cryo-module conceptual design R.Bonomi, D.Caparros, O.Capatina, P.Coelho, V.Parma,Th.Renaglia, A.Vande Craen, L.R.Williams
CERN
Cryo-module detailed design & Integration & Cryostat assembly tooling
Ph.Dambre, P.Duthil, P.Duchesne, S.Rousselot, D.Reynet
CNRS/IPNO-Orsay
SPL Machine architecture F.Gerigk CERN
ESS Cryomodule developments Ch.Darve ESS, Lund
Cryo-module Technical Coordination V.Parma CERN
ESS/CERN Fellow
ESS/CERN Fellow
ESS/CERN Fellow
ESS/CERN Fellow
SPL Cryomodule Workspace
https://espace.cern.ch/spl-cryomodule/default.aspx
SPL Cryomodule Working Group8 meetings in 2012 (from March on)
SPL Cryomodule exhibition (CERN, French in-kind meeting, June 2012)
Assembly sequence1- String of cavities outside the clean room2- Mounting of the magnetic shields4- Mounting of the cryogenic distribution3- Mounting of the tuners and inter-cavity connections 5- Mounting of the coupler cooling line6- Mounting of the thermal shield7- Insertion in the vacuum vessel8- Closing the vacuum vessel
Design by CNRS-IPNO (S.Rousselot)
2 parts vacuum vessel
• Material is low-carbon steel (LHC type)• Vessel as magnetic shielding: need for
degaussing? • Flanges in St.steel (304L)
Mechanical analysis at CNRSLoads when closing
242mm
1.2mm rattrapé par 2 vis contigüesEffect of a gap at closure
CNRS-IPNO, P.Duchesne, P.Duthil
…and at CERN
See Paulo Azevedo’s talk
Mounting of the lid: effect of flat flanges shape imperfections; CERN approach
Load case 1
Load case 2
Deformed shape:
Pressure relief devices
See Paulo Azevedo’s talk
• 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
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
Cold magnetic shieldStatus:• Following feedback from RF (T.Junginger), a re-design has been
proposed by CNRS and approved, ready for detailed drawings
Cold magnetic shield Double layer
Coupler side Tuner sideDesign by CNRS-IPNO (S.Rousselot)
Cryogenic distribution
xy
z
Pumping line (XB)
To cold box
and SM18
2 phase tube(line X)
Vapours collectorLiquid container
LHe Level gauge
Courtesy CNRS-IPNO (S.Rousselot, P.Duthil)
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
Valve boxStatus:• 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
From SM18
To CM
Vacuum barrierVacuum vessel
Thermal shield
Courtesy CNRS-IPNO (S.Rousselot, P.Duthil)
Cryo valve specs• 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
Needs agreed with TE-CRG (R.Van Weelderen) TE-CRG can start procurement
• 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
• 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
9 cryo valves
Cavity vacuum valves
• Choice discussed with TE-VSC (G.Vandoni)ready for procurement
Cryomodule instrumentation
~100 T gauges
10 Elec.heaters
4 He level gauges
4 Piezos, tuners,HOM
Pressure gaugesOptical Wire Position Monitor
Bunker integration studies at CERNSM18 bunker
Valve box
RF distribution
Cryo line interface
Cryo-module
Study by P. Martinez Yanez and B.Riffaud, EN-MME
SPECIAL LENGTH CORRESPONDING TO CRYOMODULE ANGLE
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
Bunker integration studies at CERN
CRYOMODULE 2% INCLINATION
Status of supporting system mock-up
See P. Azevedo’s and R. Bonomi’s talks
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
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