Technology Department

AD BHN-06 STATUS

A. Newborough

13th September 2013

Technology Department AD BHN-06 - Introduction

13th September 2013

2A. Newborough

Technology Department AD – Poor Coil Shimming

3A. Newborough13th September 2013

BHN 06

Technology DepartmentAD BHN 06 – Temporary Repair

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Temporary repair made in 2009 with recommendation to complete full repair at next long shut-down (LS1).

Technology Department AD – BHN 06 – Spare coil production

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• No spare coils available for the BHN type magnet (BHW and BHS only).• Delay in ordering as no European country was willing to fabricate the

coils.• Order finally placed to BINP, Russia in October 2011, original delivery

planned for March 2013 (contract follow-up by P Thonet).• 1st coil has been tested and accepted at BINP, (28/08/2013).• 2nd coil is almost ready for moulding and should be tested by end of

September.• Delivery of both coils expected mid October.

Technology Department AD BHN 06 – Logistic Issue

6A. Newborough13th September 2013

http://en.wikipedia.org/wiki/Sod's_lawBHN 06 located directly underneath the ATRAP source!

ATRAP

Technology Department AD BHN 06 – ATRAP Source

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Technology Department AD BHN 06 – ATRAP Source

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ATRAP SOURCE

Technology Department AD BHN 06 – Planning

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Milestones:• Green light to ATRAP

team by 25/09• Source removal 28/10• Magnet refurbishment

05/11–17/01• Magnetic

measurements• Vacuum chamber

repair• Magnet

refurbishment• Reinstall BHN06 27/01

– 30/01• Bake-out 17/02 –

28/02

Courtesy of N. Gilbert

Technology Department AD BHN 06 – Repair

10A. Newborough13th September 2013

• Repair to be completed in B.867• Magnetic measurement • Machine open magnet • Replace bellows on Vacuum

Chamber• Shim coils (new or old?)• Close and weld magnet with vacuum

chamber • Magnet test• Magnetic measurement• Time available 8 weeks• Material budget

• Refurbishment tooling etc…25 kCHF

• New coils … 230 kCHFCourtesy of E. Solodko

Technology Department AD BHN 06 - Conclusion

11A. Newborough

• The BHN 06 magnet has the most severe signs of degradation after ?-years of the coils moving and is the priority magnet to be refurbished.

• If a failure is experienced during a run then the downtime will be in terms of months for the majority of users and much longer for ATRAP.

• The first spare coil has been tested at BINP, the second is nearly finished and will be tested by the end of September. Delivery is planned for October before the refurbishment starts.

• Bake-out is planned for the end of February, the latest date possible for the vacuum team.

• Giving the green light to the ATRAP today can gain an extra two weeks margin.13th September 2013