WP 11.5.3:HIGH-BETA CAVITY DELIVERYA WheelhouseASTeC, STFC Daresbury LaboratoryESS SRF Elliptical Cavities Kick-Off MeetingCEA Saclay15th December 2015

Outline• Delivery Schedule

– Project plan– Risk Register– Progress

• Infrastructure– Cleanroom– Shielding – Cryogenic Plant– Cryogenic System– RF System

• Quality Assurance• Summary

Outline• Delivery Schedule

– Project plan– Risk Register– Progress

• Infrastructure– Cleanroom– Shielding – Cryogenic Plant– Cryogenic System– RF System

• Quality Assurance• Summary

Original Project Delivery

Revised Project Delivery

Milestone

Description Date

1 Infrastructure preparation start 4/5/152 Infrastructure preparation finish 13/3/173 Niobium procurement start 29/8/164 Niobium procurement finish 16/7/185 Cavity testing procedure training

start4/1/16

6 Cavity testing procedure training finish

26/2/18

7 Cavity procurement start 18/8/17*

8 Cavity procurement finish 6/3/209 Cavity testing start 3/8/1810 Cavity testing finish 25/11/2

011 Cavity shipment start 3/10/1812 Cavity shipment finish 4/12/20

HBCM Assembly at CEA start 5/4/19HBCM Assembly at CEA finish 11/11/

21

Provisional Milestones

Provisional Milestones

* Driven by H-ECCTD qualification at CEA

Milestone

Description Date

1 Infrastructure preparation start 3/8/152 Infrastructure preparation finish 18/8/1

73 Niobium procurement start 20/6/1

64 Niobium procurement finish 16/7/185 Cavity testing procedure training

start4/1/16

6 Cavity testing procedure training finish

26/2/18

7 Cavity procurement start 18/8/17*

8 Cavity procurement finish 6/3/209 Cavity testing start 3/8/1810 Cavity testing finish 25/11/2

011 Cavity shipment start 3/10/1812 Cavity shipment finish 4/12/20

HBCM Assembly at CEA start 5/4/19HBCM Assembly at CEA finish 11/11/

21

Risk RegisterRisk Current Controls Additional Controls

RequiredHOM management • Full understanding of requirements to

be gained from CEA Saclay• Lessons to be learnt from testing of

medium-β cavity by INFN• Cavity fabrication process to be

defined and specified• Vendor qualification to be performed

Procurement timescales • Dedicated resource supplied by SBS• Tight controlled management of

suppliers− Monthly reports

Assess the need to bring forward the procurement of the Nb and cavities

Conflict of resources with other ASTeC and TD projects

• Dedicated team for the production and qualification of cavities

• Personnel to be prioritised for the project

• Regular monitoring and reporting of project progress to ensure any required remedial action with regards to resource can be actioned by ASTeC and TD management.

Interviews to be held as early as possible

Project funding timescales – Major procurements on hold until commitment provided by BIS

• Interim funding to be provided by STFC

• Procurement to be commenced as early as possible

Progress• STFC ESS Project Board approval granted for the programme – July 2015• Programme of work formally started 3rd August 2015• Confirmation from BIS that George Osborne has signed off the ESS

business case (2nd December 2015)– Release of the funds now needs BIS to write a letter to STFC Authority to proceed with major procurements has been agreed by STFC ESS

Project Office• Infrastructure designs and procurement being progressed• Recruitment of ESS project staff progressing

– Cryogenic engineer appointed – Starts 1st Feb 2016– Interviews held for other positions – Offers are being made

• Technical annex has been written and reviewed by ESS– New revision to be progressed– Able to sign TA from a technical point– To be signed by the STFC ESS project office once the IKC has been agreed

Outline• Delivery Schedule

– Project plan– Risk Register– Progress

• Infrastructure– Cleanroom– Shielding – Cryogenic Plant– Cryogenic System– RF System

• Quality Assurance• Summary

SRF Hall

Thin Film Lab Crab Lab

Offices upstairsCavity Goods-In & Out downstairs

He Compressor House

Cleanroom

VTF

Cryo-plant

Full crane coverage

20m

55m

SRF Hall – Cleanroom Layout

Thin Film Lab Crab Lab

Offices upstairsCavity Goods-In & Out downstairs

He Compressor House

Cleanroom

VTF

Cryo-plant

BCP not included in ESS scope

Shielding• Outlined radiation

assessment has been performed

• More detailed assessment is to be undertaken

• To date the concrete thickness is defined – 1.8 m

• Shielding design is still being finalised

• Procurement through central services

Shielding• Outlined radiation

assessment has been performed

• More detailed assessment is to be undertaken

• To date the concrete thickness is defined – 1.8 m

• Shielding design is still being finalised

• Procurement through central services

Cryogenic Plant• Cryogenics plant will consist of:

– He Liquefier (100 l/h)– 5000 l LHe Dewar– Helium Recovery System (10g/s)– Gas Storage

• Tender for Cryogenics Plant now live.

• 3 Companies expected to tender and have had pre tender visits. – Linde Kryotechnik– Air Liquide Advance Technologies– Vorbuchner Cryogenics &

Applications

LindeKryotechnik

Air LiquideAdvance Technologies

• Cryostat options have been assessed

• A horizontal test design is being progressed

• Cryostat is sufficiently large to accommodate the cavities horizontally or vertically

• Aim to test 3 cavities in the cryostat

• Plan to use the cavities own helium vessel to cool it:

• Sufficient condition to enable the cavity to be cooled to 2K

• Easily achieved by filling LHe in its own vessel (with a volume of ~ only 50 l)

Horizontal Tests in a CryostatCryostat Proposed Design

Cryogenic Requirements:• LHe requirement of ~1500 l• Gas handling capacity < 2

g/S• Ancillaries (2K Hex, 2K

pump, distribution pipes, valves, safety devices, etc.)− Significantly simplified − Lower cost

• Design reviewed at TTC meeting− Feedback provided

• Procurement of components has commenced

Horizontal Tests in a CryostatCryostat Proposed Design

Horizontal tests Performance is near final

configuration Automatic leak checks on He

vessel Higher confidence in performance Reduced test duration (quick cool-

down/warm up) Lower operational hazards (due to

lower gas flow/less quantity of LHe)

75% saving on LHe and gas storage

Risks/Issues • Additional assembly steps• Additional leak checks during

assembly Need to understand the cryo load

during F/E or multipactor Need careful QA steps

Horizontal Tests in a CryostatCryostat Proposed Design

19

1. Helium Top Fill Port Add extra CF/ISO flange as collar so that the weld-region is not disturbed

2. Helium bottom Fill CF to Flexible pipe3. Beam Pipe Vacuum Coupler Port (ISO flange via all metal angle valve)4. RF input coupler Beam pipe side flange-25. RF pick up Beam pipe side flange-2 5a (OR) Pick up point 5b6. Mounts for T-sensors? Cu mounts to bolt 4 Cernox on each cavity7. Film Heater 50 WItems 3,4 and 5 factory mounted on the cavityCavity transported in Vacuum or in N2 at what pressure?

1

23

4 5a

5b

Modification

6

7

Cavity InterfacesFor discussion after lunch:-

RF System• Existing VTF test facility is installed

in the Electron Hall (old SRS Outer Hall)

• Capable of performing high gradient validation tests on 1.3 GHz Tesla cavities

Needs to be upgraded to enable testing at 704 MHz

• System has been defined− Robust and versatile system− Low risk as it is an already operational

system• Procurement of components being

progressed• RF amplifier is being sourced

− Need to understand the RF power requirements for F/E or m/p conditions

250W or 500W?Courtesy of Tom Powers (Jlab)Low level block diagram

Outline• Delivery Schedule

– Project plan– Risk Register

• Infrastructure– Cleanroom– Shielding – Cryogenic Plant– Cryogenic System– RF System

• Quality Assurance• Summary

Quality Assurance

Industrial:Nb material

• Company – Provision documentation• STFC – Monitoring of documentation - Approval,

Inspection

Industrial:Cavity

fabrication

• Company – Provision documentation• STFC – Monitoring of documentation (with factory

visits) - Approval, Inspection

STFC:Cavity Testing

• STFC − Provision of cavity documentation and test data

• ESS − Monitoring of documentation (with factory visits) - Approval, Inspection, Inspection

• CEA Saclay − Monitoring of documentation (with factory visits) - Approval, Inspection, Inspection

Quality Assurance• Data management (For discussions

after lunch)– Need a better understanding of what

parameters need to be recordedWhat data has been collected so far on the

prototype cavities tested to date?– Need to understand / agree on how the

data is to be presentedNeed to define the architecture

Outline• Delivery Schedule

– Project plan– Risk Register

• Infrastructure– Cleanroom– Shielding – Cryogenic Plant– Cryogenic System– RF System

• Quality Assurance• Summary

Next Steps• Finalise all the designs for the infrastructure and

complete all the procurements• Continue on-going discussions with potential

suppliers– Defining requirements – on-going

• Commence the tender process for the Nb material– The final material requirements and specification will

need to be understood• Finalise Technical Annex

– Technical sign off– STFC ESS Project Office sign off

Summary• Programme of work has commenced• Infrastructure requirements are being defined

and agreed• Infrastructure procurement is being progressed• Recruitment of ESS production team

progressing well• UK funding agreed - awaiting final BIS sign off• Technical Annex progressing