2. LIU / HL-LHC Cost and Schedule Review
17-19 October 2016
17-19 October 2016

3. LIU-PSB Table of contents: Outcomes of the Cost and Schedule review
Klaus Hanke, Bettina Mikulec, Gian Piero Di Giovanni, LIU-PSB Working Group
Table of contents:
Outcomes of the Cost and Schedule review
Baseline beam parameters
Machine layout
Status of work progress
Mandatory CONSolidation items
Risks and mitigation
Budget, manpower, EVM
Schedule
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

4. March 2015 : Outcomes of the Cost and Schedule review
Findings
The goal for the PSB upgrade is to produce higher brightness beams to match the HL-LHC requirements. This will also allow higher beam intensities for non-LHC beams. The LIU-PSB contains two parts: connection of the PSB with LINAC4 and 2 GeV energy upgrade of the PSB of the extraction energy.
The cost of PSB is reasonable, since all the elements are standard or similar to existing equipment. Power converters are the biggest fraction of the budget of PSB.
Comments
The cost estimates are largely based on existing equipment and are well founded
It is difficult to reduce cost through scope reduction. The beam instrumentation considered for scope reduction is essential for efficient commissioning after LINAC4 connection and PSB 2 GeV upgrade.
High schedule risk due to a 5 month overload for installation during LS2.
Removal of unused old cables at the PSB is a high priority and needs to be started as soon as possible.
Recommendations
Schedule removal of old cables at the PSB as soon as possible
Start installation of equipment for the PSB upgrade as soon as possible to alleviate the schedule problem during LS2
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

5. 2016 Beam Parameter** Table
Standard scheme N
(x 1011p/b)
e (mm)
Bl(ns)
Number of bunches
PSB/ring
34.2
1.7
650 1 PS
32.5
1.8
205
4 + 2
SPS
2.6
1.9
3.0
4 x 72
LHC
2.3
2.1
1.6
10 x 288
** In each machine beam parameters are given at injection and after RF capture
LHC Injectors Upgrade (LIU) Project Description, LIU-PM-RPT-0015
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

6. 25 ns Beam Performance
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

7. LIU-PSB activities EYETS 2016-2017
Vers PS
Renovate electronics for
4 BR.BCTDC (section 9)
4 New monitors BR.TMD (8L1)
New ring Trajectory Measurement System (PSB-TMS)
New BLMs
(FIC detectors)
New prototype wire Scanner BWS (4L1)
New Tune pick-up BPM (3L1)
Exchange Septum SMH (15L1)
New kicker KSW (16L1)
Replace kicker KSW (16L4)
Move kicker KSW (from 16L4 to 2L1)
Relocate Monitor BTV (BT.BTV30)
Enlargement of the shaft
New wideband electrostatic pick-up BPM (BTP.BPMW15)
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

8. LIU-PSB activities YETS 2017-2018
Vers PS
New SEMGrid (4L1 ring 3)
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

9. LIU-PSB activities LS2
Vers PS
New Absorber/Scraper
Under studies:
Change of the beam stoppers
New vacuum window before the PSB Dump
New Wire Scanner x4 (11L1)
New RF bypasses
Laminated side plate on bending (BHZ MAIN)
Parallel shunt resistors on quadrupoles (QDE, QFO) and bending (BHZ MAIN) magnets
Transverse Feedback
New interlock system PSB extraction to PS
New finemet cavities
BR2&4.C02 7L1
BRr.C04 13L1
BR.C16.5L1
New Wire Scanner x3 (4L1)
New extraction kicker (BEr.KFA14L1)
New PSB Injection Region
Remove the current sector (1L1)
New H- charge exchange injection systems
PSB Injection Systems:
New Injection bending (BHZ INJ)
New Distributor (BI.DIS10)
New Septa (BI.SMV10)
Relocate beam instrumentation (BI.BTV30)
Change of the magnets
PSB Extraction and Transfer:
New BHZ EXT
New septum (BT.SMV10 and BT.SMV20)
Relocate beam instrumentation (BT.BTV10)
New kicker (BT.KFA10)
Change the magnets
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

10. Cost to Completion (Material + M to P) [kCHF]
LIU-PSB Top 10 WPs
Workpackage
Description
Cost to Completion (Material + M to P) [kCHF]
LIU-PSB 5
Power Converters
21,435
LIU-PSB 4
RF systems
13,281
LIU-PSB 9
LINAC4 to PSB transfer line and PSB injection systems
7,752
LIU-PSB 6
Beam  instrumentation
3,755
LIU-PSB 15
Civil Engineering
3,266
LIU-PSB 10
PSB Extraction system and PSB-PS transfer line
3,045
LIU-PSB 3
Magnets
2,956
LIU-PSB 12
Electrical Systems
2,718
LIU-PSB 13
Cooling and Ventilation
2,351
LIU-PSB 8
Vacuum System
1,768
LIU-PSB 14
Installation, Transport and handling
1,015
LIU-PSB 23
Half-Sector Test Project + Stripping Foil Test
900
LIU-PSB 7
Beam Intercepting Devices
803
LIU-PSB 1
Management
536
LIU-PSB 11
Controls
330
LIU-PSB 17
Interlock systems
244
LIU-PSB 21
Commissioning and Operation
145
LIU-PSB 20
Survey 48
LIU-PSB 2
PSB Beam dynamics 35
Total
66,380
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

11. Progress on individual equipment / System (top 10)
Equipment / Systems
Activity Description
Status
Due date (EYETS, YETS, LS2)
power converters
(21,435 kCHF)
injection power supplies
2 GeV Main Power supply
other pc for 2 GeV upgrade
all ready
procurement started
on schedule for LS2
EYETS
LS2
RF systems
(13,281 kCHF)
new wideband RF cavities
new LL RF system
successful tests with prototypes; reviewed
procurement in progress
mainly deployed
LS1
PSB injection systems
(7,752 kCHF)
new hardware for distribution to 4 rings, new chicane and painting bumpers, foil mover, powering, vacuum and instrumentation
mock-up, stripping foil test and HST in progress
EYETS/
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

12. Progress on individual equipment / System (top 10)
Equipment / Systems
Activity Description
Status
Due date
(EYETS, YETS, LS2)
beam instrumentation
(3,755 kCHF)
specific injection diagnostics
PSB rings: new orbit system, new wire scanners, turn by turn profile measurement
commissioning (Half Sector Test HST)
procurement, prototyping
EYETS
LS2 and before
civil engineering
(3,266 kCHF)
bldg. 245
alcove for BSW (bumper) transformers
handed over, safety assessment ongoing
crash program
before LS2
2 GeV extraction and transfer
(3,045 kCHF)
upgrade/replacement of kickers and septa
design/procurement/production
all on track
LS2
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

13. Extraction Systems KFA14L1 - Horizontal Extraction Kicker
BESMH - Horizontal Extraction Septum
KFA10 kicker – Vertical recombination 4 to 2
SMV10 septum – Vertical recombination 4 to 2
KFA20 kicker – Vertical recombination 2 to 1
SMV20 – Vertical recombination 2 to 1
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

14. Progress on individual equipment / System (top 10)
Equipment / Systems
Activity Description
Status
Due date (EYETS, YETS, LS2)
magnets
(2,956 kCHF)
modifications main magnets
injection magnets
large 2 GeV bends
other extraction magnets
on schedule for LS2
all ready
LS2
EYETS
electrical systems
(2,718 kCHF)
de-cabling
new cable requests
racks and infrastructure
cables identified, ready to go
all requests collected, budget determined and allocated
new rack space created
EYETS, LS2
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

15. Cable Clean-Up ~1800 new cables for LIU – no more space on cable trays
cable clean-up in stages:
2014/15: identification of obsolete cables - done
YETS 2015/16: disconnection of obsolete cables – done
only one problem encountered during re-start!
3. EYETS 2016/17: cable removal
de-cabling and re-cabling of presently not obsolete cables remain to be done in LS2 (or in case of an early Linac4 connection)
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

16. New Rack Space 2015 2016 rack support structures in place
storage space
cleared
new false floor in place
2016
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

17. New Rack Space
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

18. Due date (EYETS, YETS, LS2)
Progress on individual equipment / System (top 10)
Equipment / Systems
Activity Description
Status
Due date (EYETS, YETS, LS2)
cooling &
ventilation
(2,351 kCHF)
bldg. 245 (2 GeV MPS)
PSB cooling station
contract signed
design being finalised
before LS2
LS2
vacuum system
(1,768 kCHF)
contributor to all other items
all on track
EYETS-LS2
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

19. Progress Status Summary
Equipment / Systems
March 2015 status
October 2016 status
Remarks
power converters
POPS-B procurement
injection power supplies ready
assessment after POPS incident RF
tests with prototype cavity
reliability run done
reviewed and full installation decided for LS2
all on track
injection systems
on track for end 2016
ready
baseline: LS2
ready for early L4 connection
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

20. Injection Systems new vertical distribution septum new distributor
bumper magnets
foil mover
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

21. Half-Sector Test (HST)
HST installation completed in Linac4 transfer line; waiting for first 160 MeV H- beam
helped already discovering a few design and fabrication issues
will reduce technical and planning risks for installation and commissioning
Stripping foil
test stand
Stripping foil
system
Chicane
magnets +
H0/H- dump
Temporary
dump
permanent installation of stripping foil test stand
in Linac4 line to Linac4 dump completed
 evaluation of stripping foils and system
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP
LIU-PSB : Klaus Hanke - BE/OP

22. First Beam on Stripping Foil Test Stand 13 October
50 MeV H- beam from Linac4
view screen
stripping foil
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

23. Injection Review September 2016
The Linac4-PSB connection readiness was reviewed in September 2016 in order to derive a comprehensive, detailed plan and list the associated risks.
This could happen in case of a major LHC break-down which would open a time window long enough to do this
Conclusions:
all Linac4-PSB equipment is ready for a connection as from spring 2017
critical items are no show stoppers
connection could be done in (6 +3) months
Half Sector Test is extremely important, as well as the Linac4 reliability Run, which is endorsed
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

24. Progress Status Summary
Equipment / Systems
March 2015 status
October 2016 status
Remarks
beam instrumentation
number of items still in design phase
Linac4 related diagnostics ready and being tested (HST)
otherwise on track for LS2 or earlier
commissioning of diagnostics before LS2 where possible
on track
civil engineering
bldg. 245 under construction
bldg. 245 handed over
safety assessment ongoing
some other activities
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

25. POPS-B Building 245 completed
Converter hall
False floor
Loading platform
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

26. Progress Status Summary
Equipment / Systems
March 2015 status
October 2016 status
Remarks
extraction systems and transfer line
design phase
procurement / manufacturing
on track
magnets
procurement ongoing, on track
electrical systems
cable inventory being set up
identification of obsolete cables
cable inventory complete, DICs and DECs submitted, budget settled and transferred to EL code (all TIDs done)
clean up for 2016/17 EYETS
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

27. Progress Status Summary
Equipment / Systems
March 2015 status
October 2016 status
Remarks
cooling & ventilation
cooling inventory being set up
cooling inventory complete
ventilation specs being compiled
contract for bldg. 245 signed
on track
vacuum system
contributing to all other activities
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

28. Documentation & Reviews
LIU-PSB counts 65 documents released since 2015, including ECRs
internal assessment of L4 connection readiness
/ internal review PSB-PS transfer line
second full Finemet review
internal review beam intercepting devices
Linac4 connection readiness review
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

29. Major Baseline Changes
Equipment / Systems
Description
Status RF
full replacement of all ferrite cavities including C16 by wide band Finemet system (before plan was to replace C02/C04 only)
reviewed and approved
remains within cost envelope
C&V
separation of the TT2 cooling from the PSB (more logical architecture, more operational flexibility)
cost neutral for LIU (some cost for CONS), approved
no change of CtC
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

30. Finemet© Baseline
Finemet© review September 2015 approved replacement of all 3 present cavity systems with Finemet©
Test with ring 4 prototype cavity proved that Finemet© was suitable:
As an h=1 C02 replacement from 600 kHz-1.8 MHz
As an h=2 C04 replacement from 1.2 MHz-3.6 MHz
As a C16 replacement from 6-16 MHz for longitudinal blow-up
It could be used as a combined h=1 & h=2 replacement by splitting the available voltage between the harmonics
Group of 4 superposed cavity
couples in one PSB section
10-cell prototype MA cavity in PSB ring 4
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

31. Mandatory CONSolidation activities for LIU-PSB
Equipment / Systems
Description
Risks if not done
Due date
PSB cooling plant
full renovation
reliability issue, non conformities
LS2
CONS budget
rack supports
old racks are sitting on false floor
safety non-conformity
mainly EYETS
cable clean up
removal of obsolete cables
LIU installations not possible
EYETS
handling tools
consolidate overhead cranes
LIU installations not possible; delays
LS1 (done)
A number of high-cost CONS items (RF, Power) have been integrated in the LIU baseline at the beginning of the project
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

32. Risks summary Equipment / System Risks Risk Level class Mitigation
POPS-B building
assessment after POPS incident
schedule: 4 m
 high but OK for LS2
cost: 120 kCHF
 low
complete assessment and implement mitigation measures
POPS-B power supply
same technology as POPS
cost: 500 kCHF
issues are understood and mitigation measures put in place
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

33. Overall Cost to Completion
Systems
2015 CtC [kCHF]
2016 CtC [kCHF]
Comments
Grand total LIU-PSB
67,339
66,380
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

34. Cost to Completion VariationWP
Description
2015 CtC [kCHF]
2016 CtC [kCHF]
Delta
[kCHF]
Comments
LIU-PSB 12
Electrical Systems
2,091
2,718
627
mostly DC cabling
LIU-PSB 13
Cooling and Ventilation
1,762
2,351
589
full inventory and costing done
LIU-PSB 5
Power Convertors
20,850
21,435
585
LIU-PSB 6
Beam instrumentation
3,358
3,755
397
tune pick-up, turn by turn
LIU-PSB 8
Vacuum System
1,494
1,768
274
LIU-PSB 7
Beam Intercepting Devices
544
803
258
BI beam stopper
LIU-PSB 9
LINAC4 to PSB transfer line and PSB injection systems
7,614
7,752
138
LIU-PSB 14
Installation, Transport and handling
953
1,015 62
LIU-PSB 20
Survey 40 48 8
LIU-PSB 2
PSB Beam dynamics 34 35 1
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP
LIU-PSB : Klaus Hanke - BE/OP 34

35. Cost to Completion VariationWP
Description
2015 CtC [kCHF]
2016 CtC [kCHF]
Delta
[kCHF]
Comments
LIU-PSB 21
Commissioning and Operation
145
LIU-PSB 1
Management
539
536 -3
LIU-PSB 17
Interlock systems
256
244
-12
LIU-PSB 11
Controls
364
330
-34
LIU-PSB 10
PSB Extraction system and PSB-PS transfer line
3,082
3,045
-37
LIU-PSB 15
Civil Engineering
3,325
3,266
-59
LIU-PSB 23
Half-Sector Test Project + Stripping Foil Test
1,016
900
-116
reduced cost of BI equipment
LIU-PSB 3
Magnets
3,720
2,956
-764
below initial estimates
LIU-PSB 4
RF systems
general services
13,202
2,950
13,281 79
-2,950
wrongly allocated to LIU-RF 4 and transferred in 2016 to general services WPs
Total
67,339
66,380
-959
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP
LIU-PSB : Klaus Hanke - BE/OP 35

36. EVM Metrics 17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
SV = -3,567 kCHF
AC = -164 kCHF
[1] Schedule Variance (SV) = Earned Value (EV) – Planned Value (PV)
[2] Cost Variance (CV) = Earned Value (EV) – Actual Cost (AC)
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP
LIU-PSB : Klaus Hanke - BE/OP 6

37. EVM Metrics
In kCHF
Comment
Schedule Variance
-3,567
BE-BI: Cables and electronics for beam loss monitors not yet delivered (new electronics not yet validated). SV = -500 kCHF.
BE-CO: Control infrastructure: hardware for LS1 and LN4 signals not yet purchased. SV = -120 kCHF.
BE-RF: Amplifiers, cavities and ancillaries production for RF consolidation not yet started. SV = -500 kCHF.
TE-ABT: Foil handling system (mechanical parts & vacuum equipment) not linear: only 2 sets over 8 (WU from Jun-15 to Nov-16); BI.BSW magnets: reporting by unit, not all components received (vacuum chambers, coils, yokes) and assembly not yet started; delays in the purchase of prototype hardware for electronics and controls for kickers. SV = -1,150 kCHF.
TE-EPC: Transformer and strip line for booster injection septa converters not yet purchased; booster injection stripping foil chicane converters series assembly and tests not yet started; delays in the delivery of 20 kA, 6kA and 3.4 current transducers; LHC600A-40V power racks and modules for booster injection not started; power cables for booster MPS not yet purchased. SV = -950 kCHF.
Cost Variance
-164
TE-ABT: Components for foil handling systems and BI.BSW magnets received but not reported as general reporting by unit. CV = -400 kCHF.
EN-EL: delays between the commissioning of equipment and the payment of the invoice. CV = +300 kCHF.
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

38. Manpower bottleneck with expert manpower in beam dynamics
fellows are essential for the overall work progress
FTE
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
Total
Staff
9.7
18.2
32.8
34.5
39.3
40.9
39.7
38.2
48.1
44.2
6.3
351.9
Fellows
0.4
2.8
4.2
3.6
8.6
10.1
6.5
2.0
1.0
40.2
MPA
0.6
0.3
0.0
4.1
1.5
2.1
9.6
10.7
21.3
37.0
39.1
52.0
52.5
48.3
49.1
45.2
401.7
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP
LIU-PSB : Klaus Hanke - BE/OP

39. Master Schedule Evolution of the main master schedule
the estimation time for the beam commissioning has been detailed on the master schedule.
the long shutdown 2 has been postponed by 6 months and extended by 6 months.
March 2015
EYETS
YETS
LS2
October 2016
LS2
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

40. Summary / Major upcoming Milestones
project well on track
base line stable, no major changes
cost risk classification (1) confirmed
major work/procurement ongoing; ramping up expenses
next milestone EYETS 2016/17:cable clean-up, number of installations (e.g. beam instrumentation)
important results of the Half Sector Test to come
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

42. Spare Slides 17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

43. Evolution of EVM Planned Value
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

44. Lessons from POPS Incident
Modification of B245.
Delay in planning: two months (additional 4 months for building the power converters was announced (LIU-PSB Meeting 175  07 June 2016). Delay inside the margin of the project planning. In case of particular issues 50% of that will not be recovered.
Additional costs: <120kCHF (less than 5% of the cost of the Building)
Problem occurred in POPS:
Delay in planning: four months (known problems have been understood and solution for POPS container is under design-construction for EYETS. Nevertheless testing of the power converter protections may go wrong and oblige to step back)
Additional costs: < 500kCHF (10% of the cost of the power converters)
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

45. POPS experience feedback on POPS-B
POPS experience feedbacks:
Reduce the fault energy in case of capacitor short circuit
Improve design of capacitors with ageing tests
Improve design of capacitor room following explosion analysis
Study alternative protections in the power converter
Build an off-line testing platform
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

46. POPS experience feedback on POPS-B
POPS experience feedbacks:
Reduce the fault energy in case of capacitor short circuit
Limit damages to ¼ of the capacitors
Fuses blown very quick strongly limiting the energy losses
Implementation ongoing for POPS
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP 46

47. POPS experience feedback on POPS-B
Additional tests to prove resistance to short circuit
POPS experience feedbacks:
Improve design of capacitors with ageing tests
Ageing + discharge tests shall be completed by October 2016
2 x
720 h left
370 h left
600 h left
Removed for film analysis
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

48. POPS experience feedback on POPS-B
POPS experience feedbacks:
Improve design of capacitor room following explosion analysis
Pressure wave calculation
Effects on the structure
PO for consultancy to be released in the next days (60kCHF)
Possible remedies (POPS)
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP

49. POPS experience feedback on POPS-B
Fast DC circuit breaker
POPS experience feedbacks:
Study alternative protections in the power converter
Build an off-line testing platform
Check repair before restarting
Design ongoing
17-19 October 2016 LIU / HL-LHC Cost and Schedule Review
LIU-PSB : Klaus Hanke - BE/OP