2. TE-MSC activities in SPS during YETS 2017-2018
J. Bauche, on behalf of the TE-MSC team
8th November 2017

3. Outline Magnet test campaign at the start of YETS
Magnet patrol
HV test of main magnets
Planning of test period – week 50/2017
Magnet maintenance activities
Magnet exchanges
Standard maintenance
LIU activities
aC coating
Other (co-)activities
J. Bauche, TE-MSC, 08/11/2017

4. Inspection “Magnet Patrol” (IMPACT 102490)
Magnet test campaign
Inspection “Magnet Patrol” (IMPACT )
To detect coil movements in main magnets and transfer line quadrupoles
Removal of the magnet covers
Audio-visual inspection in pulsed mode
Machine conditions
Machine closed to non-MNC personnel during tests (coord. with Carb Cavity)
All technical services shall stay available and operational (Electrical network, main magnet converters, cooling, interlocks, access)
Access system in «Magnet Patrol» mode
Support from other groups
BE/OP to power the magnets and lock the accesses
All other teams ready to intervene in case of system/service failure (EPC, EL, MPE, ICS, CV, etc…)
J. Bauche, TE-MSC, 08/11/2017

5. High voltage tests (+ delta I) (IMPACT 102490)
Magnet test campaign
High voltage tests (+ delta I) (IMPACT )
To detect weaknesses in main magnet circuits insulation
Main dipoles and quadrupoles (962 units)
Busbars and water cooled cables are tested together with the magnets!
Machine conditions
Machine closed, in dedicated configuration (CIS system of EPC)
Cooling circuits running
Separation of power converters from load
Test +/- 6kV on dipole and +/- 4 kV on quadrupole circuits, from BA3
In case of failure, localization in the machine, repair, and re-test
Support from other groups
TE/EPC for CIS configuration + HV test bench
BE/OP for access control
J. Bauche, TE-MSC, 08/11/2017

6. Magnet tests - week 50/2017 Planning
Monday 18/12: opening of all main magnet covers
Consignation main magnet circuits at 07:45
Covers opening all day
Tuesday 19/12: MAGNET PATROL
Deconsignation main magnet circuits between 06:30 and 07:00 (according to Carb cavity works)
Preparation of machine by BE/OP  07:00 to 08:30
Magnet patrol between 8:30 and 17:00 (hopefully…)
Consignation main magnet circuits at the end of the patrol
Wednesday 20/12: HV test + delta I test + TT quadrupole patrol
Preparation of machine by BE/OP and TE/EPC (CIS configuration)
HV test + delta I test  morning
TT20 – TT40 – TT60 quadrupole patrol  afternoon
Thursday 21/12: start of general access
Earthing main magnet circuit at 07:45
Closing of magnet covers all day
J. Bauche, TE-MSC, 08/11/2017

7. Preventive / corrective exchange of main magnets
Magnet system maintenance
Preventive / corrective exchange of main magnets
(IMPACT )
Expected around 10 main magnets to be replaced
Based on inspection campaign results
Aperture restrictions to be considered
Machine conditions
Free access to material lift and passage for transport equipment
Support from other groups
EN/HE, TE/VSC, EN/ACE/SU
Inputs from BE/OP for aperture restrictions
Planning to be discussed with coordination (BA3 lift revamping…)
Main magnet replacement
J. Bauche, TE-MSC, 08/11/2017

8. Magnet system maintenance
Magnet general maintenance (IMPACT )
 Corrective/preventive maintenance
Repair of magnets non-conformities in-situ
Busbar system inspection
Machine conditions
Activities transparent for other teams
Support from other groups
None
Activity distributed over the whole YETS, ending with the most radioactive zones
Broken pole shim
Water leak
J. Bauche, TE-MSC, 08/11/2017

9. aC coating and Impedance Reduction (IMPACT to be issued by VSC)
LIU activities
aC coating and Impedance Reduction
(IMPACT to be issued by VSC)
Magnets removal / reinstallation followed by MSC
Details in TE-VSC presentation (
MBB 51470, and aC treated in-situ
QF SSS 512 and 514, and QD SSS 515 will be dismantled and aC treated ex-situ
QD will be aC treated ex-situ or replaced by pre-coated spare
All removed magnets will be disconnected on 21/12/2017
Machine conditions
Free access to material lift and passage for transport equipment
Support from other groups
EN/HE, TE/VSC, EN/ACE/SU
Planning following VSC request and SPS coordination
J. Bauche, TE-MSC, 08/11/2017

10. Other activities Prototype fire door installation around MBA.41570
MSC support will be provided if needed
Installation of TPSWA (ZS diffuser)
MSC support for SSS girder modification and MDVA.21604
Lift maintenance BA1and BA2 on 20th December
Date foreseen not compatible with HV test (CIS configuration)
 to be modified
BA3 goods lift revamping from 16th January
Impacts on possibility to transport magnets via BA3 for magnet replacement campaign  complete campaign in 6 days or transport via BA6
J. Bauche, TE-MSC, 08/11/2017

11. Many thanks in advance for your support to the TE-MSC activities!