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

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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

8. 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

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