TEMSC activities in SPS during YETS 2017 2018

TE-MSC activities in SPS during YETS 2017 -2018 J. Bauche, on behalf of the TE-MSC team 8 th November 2017 https: //indico. cern. ch/event/676536 2

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 • a. C coating • Other (co-)activities J. Bauche, TE-MSC, 08/11/2017 3

Magnet test campaign Inspection “Magnet Patrol” (IMPACT 102490) è • • To detect coil movements in 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

Magnet test campaign High voltage tests (+ delta I) (IMPACT 102490) è To detect weaknesses in magnet circuits insulation • • • Machine conditions • • • Main dipoles and quadrupoles (962 units) Busbars and water cooled cables are tested together with the magnets! Machine closed, in dedicated configuration (CIS system of EPC) Cooling circuits running Separation of power converters from load Test +/- 6 k. V on dipole and +/- 4 k. V on quadrupole circuits, from BA 3 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

Magnet tests - week 50/2017 Planning è Monday 18/12: opening of all main magnet covers è è è Tuesday 19/12: MAGNET PATROL è è è 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 è è Consignation main magnet circuits at 07: 45 Covers opening all day Preparation of machine by BE/OP and TE/EPC (CIS configuration) HV test + delta I test morning TT 20 – TT 40 – TT 60 quadrupole patrol afternoon Thursday 21/12: start of general access è è Earthing main magnet circuit at 07: 45 Closing of magnet covers all day J. Bauche, TE-MSC, 08/11/2017

Magnet system maintenance Preventive / corrective exchange of main magnets (IMPACT 102493) èExpected around 10 main magnets to be replaced • • • Machine conditions • • Free access to material lift and passage for transport equipment Support from other groups • • • Based on inspection campaign results Aperture restrictions to be considered EN/HE, TE/VSC, EN/ACE/SU Inputs from BE/OP for aperture restrictions Main magnet replacement Planning to be discussed with coordination (BA 3 lift revamping…) J. Bauche, TE-MSC, 08/11/2017

Magnet system maintenance Magnet general maintenance (IMPACT 102488) Corrective/preventive maintenance • • • Machine conditions • • Activities transparent for other teams Broken pole shim Support from other groups • • Repair of magnets non-conformities in-situ Busbar system inspection None Activity distributed over the whole YETS, ending with the most radioactive zones Water leak J. Bauche, TE-MSC, 08/11/2017

LIU activities a. C coating and Impedance Reduction (IMPACT to be issued by VSC) èMagnets removal / reinstallation followed by MSC Details in TE-VSC presentation (https: //indico. cern. ch/event/670978/) • MBB 51470, 51530 and 51550 a. C treated in-situ • QF SSS 512 and 514, and QD SSS 515 will be dismantled and a. C • • • Machine conditions • • treated ex-situ QD 51510 will be a. C treated ex-situ or replaced by pre-coated spare All removed magnets will be disconnected on 21/12/2017 Free access to material lift and passage for transport equipment Support from other groups • EN/HE, TE/VSC, EN/ACE/SU J. Bauche, TE-MSC, 08/11/2017

Other activities è Prototype fire door installation around MBA. 41570 • MSC support will be provided if needed è Installation of TPSWA. 21602 (ZS diffuser) • MSC support for SSS girder modification and MDVA. 21604 è Lift maintenance BA 1 and BA 2 on 20 th December • Date foreseen not compatible with HV test (CIS configuration) to be modified è BA 3 goods lift revamping from 16 th January • Impacts on possibility to transport magnets via BA 3 for magnet replacement campaign complete campaign in 6 days or transport via BA 6 J. Bauche, TE-MSC, 08/11/2017

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