2. POPS-B Project Update 07 June 2016 POPS-B: Project update and Feedback from POPS Experience LIU-PSB Meeting 175 07 June 2016 Fulvio Boattini TE/EPC 2

3. POPS-B project power converters; POPS-B project Status: B245 civil engineer; Equipment integration; Purchase orders; Activities until Eyets; POPS experience feedback on POPS-B; Planning update; Contents

4. POPS-B main power converters Spare POPS-B project power converters

5. POPS-B main power converters Spare POPS-B quadrupole converters POPS-B project power converters

6. POPS-B main power converters Spare POPS-B quadrupole converters POPS-B Injector Trims converters POPS-B project power converters

7. POPS-B project Status: B245 civil engineer B245 construction is completed

8. POPS-B Project Update 07 June 2016 8 POPS-B project Status: B245 civil engineer … and now installation starts Converter hallFalse floor Loading platform Capacitors room EN/EL Room EN/CV Room Ref magnet Room

9. POPS-B Project Update 07 June 2016 9 POPS-B project Status: equipment integration Air Conditioning Cooling towers Power transformers Main PCs Config Switches Trims Cable ladders & pipes Ref magnet Quads Magnetics Storage caps

10. POPS-B Project Update 07 June 2016 10 POPS-B project Status: POs POPS-B purchase orders until EYETS: Main Power Converters (6 MCHF): Done April 2016 Power cables (200 kCHF): Planned for next week Cooling & Ventilation system: Planned October 2016 Main Power Transformers (200 kCHF): Planned March 2017 Storage Capacitors (2 MCHF): Planned January 2017 QTR Dummy load and MPS spare (160 kCHF): Planned September 2016 Injector Comet (210 kCHF): Ongoing (126 kCHF so far)

11. POPS-B project Status: activities until EYETS B245 lightning & 1 st part of cable ladders Configuration switches installation False floor & 2 nd part of cable ladders Aux power cabinets installation Power cabling (B245 to B271) Cable ladders for dummy load (b367) MPC kick-off FC storage capacitors PO power transformers FC CV Plant

12. POPS-B Project Update 07 June 2016 12 First fault on power converter side: Lesson learned: failure on one leg propagates to all DCDC converter Second fault on power converter side: Lesson learned: need to test repaired stacks before restarting. Fault on storage capacitors: Lesson learned: capacitors can fail and release lots of energy POPS experience feedback on POPS-B Recall

13. POPS-B Project Update 07 June 2016 13 POPS experience feedback on POPS-B POPS experience feedbacks: Reduce the fault energy in case of capacitor short circuit Study alternative protections in the power converter Build an off-line testing platform Improve design of capacitors with ageing tests Improve design of capacitor room following explosion analysis

14. POPS-B Project Update 07 June 2016 14 POPS experience feedback on POPS-B POPS experience feedbacks: Reduce the fault energy in case of capacitor short circuit Fuses blown very quick strongly limiting the energy losses Limit damages to ¼ of the capacitors Implementation ongoing for POPS

15. POPS-B Project Update 07 June 2016 15 POPS experience feedback on POPS-B POPS experience feedbacks: Improve design of capacitors with ageing tests 2 x Removed for film analysis 600 h left 370 h left 720 h left Ageing + discharge tests shall be completed by October 2016 Additional tests to prove resistance to short circuit

16. POPS-B Project Update 07 June 2016 16 POPS experience feedback on POPS-B POPS experience feedbacks: Improve design of capacitor room following explosion analysis Pressure wave calculation Effects on the structure Possible remedies (POPS) PO for consultancy to be released in the next days (60kCHF)

17. POPS-B Project Update 07 June 2016 17 POPS experience feedbacks: Study alternative protections in the power converter Fast DC circuit breaker Build an off-line testing platform Check repair before restarting Design ongoing POPS experience feedback on POPS-B

18. POPS-B planning update Late modification of the B245 BC 76805 Additional 4 months to build Main PCs Main PCs installation and commissioning shrinks

19. POPS-B Project Update 07 June 2016 19 Thank you for your attention Questions ?