LHC-RF activities in LHC PT 4 TS2 YETS 2017-2018 LS2 6/8/2018 LHC-RF activities in LHC PT 4 TS2 YETS 2017-2018 LS2 G. Cipolla and K. Turaj On behalf of the BE-RF group Gino Cipolla BE-RF-PM

G. Cipolla and K. Turaj, BE-RF Zones and Constrains 6/8/2018 Sector 11: For work on HV: HV consignation For RF Tests: HV ON (+ Short Waveguide circuits) Sector 8: For work: Module empty, ADT and Cryo consignation For conditioning Zone closed (any access causes INTLK and delays) G. Cipolla and K. Turaj, BE-RF Gino Cipolla BE-RF-PM

G. Cipolla and K. Turaj, BE-RF TS2 6/8/2018 LLRF – firmware upgrade (ALLLoopsDSP, module beam control) If possible – check of new ACS Inspector panel for conditioning Replacement of two ADT spare amplifiers G. Cipolla and K. Turaj, BE-RF Gino Cipolla BE-RF-PM

G. Cipolla and K. Turaj, BE-RF YETS 2017 – 2018 6/8/2018 Shut – Down Warm up of the ACS modules – opportunity to degas the RF surface Cryo-consignation Inspection - securing the instrumentation and equipment Klystrons OFF with access, 18kV EMD801 cell open (EIS chain) G. Cipolla and K. Turaj, BE-RF Gino Cipolla BE-RF-PM

G. Cipolla and K. Turaj, BE-RF YETS 2017 – 2018 6/8/2018 ACS High Power RF System Inspection and maintenance of klystron components Maintenance of Power Supplies, Signal Calibration, settings check etc Inspection and Test of Modulator tanks, Crowbars HV bunker cooling annual maintenance Klystron tests on Short Circuits – 2 weeks G. Cipolla and K. Turaj, BE-RF Gino Cipolla BE-RF-PM

G. Cipolla and K. Turaj, BE-RF YETS 2017 – 2018 6/8/2018 ACS Modules Arc Detector Inspection Temperature Sensor Testing RF antenna investigation Software upgrades Migration of FESA 2.10 to FESA 3.0 including the PLC firmware Debugging - extra time during RF conditioning and LLRF loop setup (1 week) G. Cipolla and K. Turaj, BE-RF Gino Cipolla BE-RF-PM

G. Cipolla and K. Turaj, BE-RF YETS 2017 – 2018 6/8/2018 Start up of ACS RF Modules Prerequisites, done before week 8 READY: HV, Demineralized Water, Vacuum, Cryo, Control CLOSED: RF Zone 8 (patrolled) RF Conditioning – 2.5 weeks Setting up of the LLRF loops – 2.5 weeks Maintenance 3 weeks HV test 2 weeks (access to the klystrons area needed) Conditioning LLRF (debugging) 5 weeks (RF zone 8 closed) G. Cipolla and K. Turaj, BE-RF Gino Cipolla BE-RF-PM

G. Cipolla and K. Turaj, BE-RF LS2 6/8/2018 Same as above, plus ACS system Replacement of obsolete components (processors, PS, cards, etc.) Restructure of communication Radiation monitoring system update Klystron area reorganization Tuner system maintenance Klystron replacement ? Maintenance of all FPC systems ADT system Maintenance of all amplifiers and kickers G. Cipolla and K. Turaj, BE-RF Gino Cipolla BE-RF-PM

Thank you for your attention G. Cipolla and K. Turaj, BE-RF