1. BE-BI Activities and Status: LHC and Injectors
Ray Veness, for the BI group
7/2/2014
LSC - BI Status

2. Contents BI equipment in the LHC and injectors
Scope of activities for LS1
Status and Issues
LS2, PSB, AD & LEIR PS
SPS
LHC
Conclusions and lessons learned to date
7/2/2014
LSC - BI Status

3. BI in the LHC and Injectors
Ring
LHC
SPS PS
PSB
Total beamline devices
1164
287 81
133
Number of different types 48 45 7 10
In addition
Beamline devices in the transfer lines (some 350 devices), fixed target experimental areas, AD, LEIR, ISOLDE,
Non-beamline devices, in particular BLMs
Racks, cabling control,
7/2/2014
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4. Scope of activities for LS1 Beamline activities
~250 different interventions involving beamline devices for LHC and injectors
Regular maintenance of moving parts
Replacement or radiation-damaged components (viewports, motors etc.)
Removal/replacement of instruments for other activities (eg, SMACC, PSB dump, SPS cabling campaign)
Resolution of issues found in Run 1 (eg, RF heating, reliability and performance issues)
New instruments and modifications requested by OP, projects and other users
7/2/2014
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5. Scope of activities for LS1 Other activities
BLM dismounting for SMACC
Installation of new SPS orbit system infrastructure
Installation of water cooled racks for LHC BPM and BLM systems
Re-design of the optical tables for the LHC and SPS synchrotron light monitors
SEM electronic renovation throughout the complex
Preparation of collimator BPM components
Many small upgrades to other instrumentation
New thermalised racks
7/2/2014
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6. L2, PSB, AD & LEIR L2, PSB, AD & LEIR – so far:
BPM installation (see next slide)
BLM cabling – initial issues – now solved (EN/EL)
BCT installation
Wall current monitor - leak repaired & re-installed
WS removal for calibration
AD IPM – regrouping of H & V monitors
L2, PSB, AD & LEIR – issues:
Problem with helicoflex seals and vacuum contamination has delayed BPM readiness
Corrosion on PSB WS tanks
Decided to keep existing tanks in place & mitigate any further corrosion.
7/2/2014
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7. Linac2 BPMs Status Recent issue:
LT and LTB lines completed: 7 installed
BI line (PS ring): 2 installed
BI line (PSB ring): 10 to be installed
At same time - 5 BCTs to be removed for re-winding & re-installed
Recent issue:
Civil engineering will start the excavation of the PSB Injection area on Monday 10th Feb. The zone will be delimited and access to this area restricted under ALARA 2 rules for a duration of 5 weeks. The BPMs’ installation is delayed
Slide: Courtesy J.Tan
7/2/2014
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8. PS PS so far: PS issues: WS removal for calibration
Wall current monitor – will not be installed
BCT installation
Screen in dummy 15 septum for MTE project
PS issues:
SEM grid 52: Maintenance revealed vacuum leak, requiring rebuild. Made difficult be limited availability of information
Re-design of SEM agreed, scheduled for end 2014
Dummy septum 15 screen
7/2/2014
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9. SPS SPS so far: SPS issues:
Installation of stripline BPMs to replace resonant BPA pick-ups
BGI – Consolidation work in progress
BSR – revamp of optical line done
New orbit system – fibre installation proceeding well (EN/EL)
SPS issues:
BWS (wire scanners) see dedicated slide
ZS – recent issue reported last week
7/2/2014
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10. SPS wire scanners Current rotary wire scanners
experienced RF heating during Run 1 causing wires to fail prematurely
Retro-fit solution recently proposed by RF experts.
Will now be applied, not yet sure if delays to installation
New FWS prototype (BWSRE)
In production with MME
Baseline to install new chamber in LS1 with scanner to be installed in a short shutdown
Current rotary scanner
7/2/2014
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New BWSRE scanner parts

11. LHC so far
BLM dismounting & remounting – huge work (2000+ monitors, cables, trays)
thanks to Russian Team from IHEP Protvino
BTV removal-repair-reinstallation complete
LSS BPM systems in IR 1,4,5,6,8
many changes, in progress
BGI, BWS & schottky removal for work
Thermalised racks for BPM & BLM – EN/EL & EN/CV
7/2/2014
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12. LHC Issues Synchrotron radiation telescope (BSRT) Schottky (BQS) BGI
Needed complete re-design of mirror support due to RF heating,
Design now validated following lots of EM simulations - awaiting delivery of components
Schottky (BQS)
Again required much EM simulation to understand where improvements could be made
Problems with initial material choices – warping of foil
Re-design complete – production underway – first units shipped
BGI
Helicoflex issue – solution seems to have been found using different seal
BGV, BWS – see next slides
7/2/2014
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13. LHC BWS Status
Essential beam profile measurement device, using design and components from LEP
1 of 8 removed late in Run 1 due to leak in vacuum bellows
Analysis revealed bellows fatigue lifetime too low for LHC operating scenarios
Bellows and mechanics re-designed for longer lifetime
Issues with bellows and mechanics manufacture have led to weeks delay on baseline schedule
Expected ready for installation in April, working closely with MME and MEF
LHC BWS
7/2/2014
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14. LHC BGV status Beam gas vertexing detector prototype for HL-LHC
2 Presentations to LMC
Working on phased installation plan
Phase 1 (vacuum sectors mods and services) will be completed April
Phase 2 (special vacuum chambers) in production with MME, planned to install before IR4 closure
Phase 3 (detector installation) during short accesses in 2nd part of 2014
7/2/2014
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15. Status and open issues
~155 of the 250 beamline interventions completed across the complex (62%)
Very close collaborations with many other groups, especially VSC, MME, EL have been essential to the success of these activities
Now focussing on remaining PS and PSB work
Installation of pickups in PSB running close to deadlines due to seal reliability and vacuum contamination issues
Dedicated meeting early next week
Then SPS and LHC until the summer
Re-install and test remaining equipment (SPS-LHC)
North area primary target re-build (SPS)
Follow LHC-SMACC closures for BLM and BPMs
7/2/2014
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16. General issues encountered
Technical issues
Damage to equipment during Run 1, often due to working outside of original specifications (eg. Rate of use for LHC BWS, beam intensity for SPS BWS)
Lack of information, designs and spares for old instruments
Unreliability of Helicoflex seals
Schedule issues
Heavy loading of CERN workshops (and high prioritisation of SMACC activities)
Vacuum contamination issues with many components for injectors
New constraints for radioactive material transfer and safety have added a significant overhead for all interventions
7/2/2014
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17. Backup material
7/2/2014
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18. LHC BLMs in 2013
Monitors (>2000 pcs): disconnected, dismounted, stored:
in Arc+DS – 4-5 monitors from 6 per magnet
in LSS - where was requested by the vacuum or another group
Cable trays (>450 pcs): lifted up the all cable trays in Arc +DS ( together with QPS team)
Tunnel racks: exchange of 360 backplanes, removed the all CFC cards for calibration
Surface racks: exchange to new ones with removing the all equipment
New cables: installation the new HV (>45 km) and signal (>25 km)cables in Arc for relocated to dipole-dipole interconnection monitors
7/2/2014
LSC - BI Status
Slide courtesy B.Dehning/S.Grishin

19. LHC BLMs in 2014 sector 5-6 (will finish during this week)
Re-installation of monitors in ARC+DS with installation of the new, 820 supports for dipole-dipole interconnection :
sector 5-6 (will finish during this week)
sector 6-7
New cables: installation the new cables in DS for relocated to dipole-dipole interconnection monitors
Re-installation of monitors in LSS:
LSS3 was done
HV divider installation ( 50% was done)
Tunnel racks: start to put the cards
New surface racks: installation of equipment
Rad source measurements of all (>3900 pcs) BLMs: June-November
7/2/2014
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Slide courtesy B.Dehning/S.Grishin

20. BI- BL/QP Thermalised racks
Installation status:
-Pts 5,6,7,8,1,2 : New racks installed and BPM system operative. (2nd RF ball Test done)
-Pt 3 : ongoing, next step: remove old racks
-Pt 4 : Nothing done
-Deflector (under VME fan) : Waiting for series delivery
-Waiting for cooling & ventilation team to connect electrics valves and to set up the cooling system.
-console: Waiting for a solution with BE/CO to order a special screen/keyboard.
-Pt 6 : BLM fibers installed
Deadlines:
-Pt 3 : next RF ball test 12/03/14
-Pt 4 : next RF ball test 31/03/14
7/2/2014
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21. BLM Detector Installation in PSB
Three periods require special supports due to space restrictions.
will be installed during technical stops
Patch-Cords not yet connected to the detectors
planned for next week
Support in period 12 ready to be done
No access atm due to crane renovation
Period
Position
Status
Comment 1
Internal ok 2 3 4 5 6 7
BPM pickups 8
External
partially
custom support 9
1230uSv 10 11
not 12
no access at the moment 13
RF cavity 14
displaced due to ion pump 15
Extraction custom support 16
Tunnel installation:
Very tight integration
Support with Detectors configuration

22. BLM Cable installation in PSB
New cable (CKC50) production run on tight schedule:
Modification of the CKB50 specs
Completed and delivered on-time
Re-installation in PSB
Conformity measured (developed a test-bench)
Completed on-time
Signal Cables
HV Cables
Signal and HV Patch-Cords

23. BLM Electronics installation in PSB
All large components have been installed:
Processing crate (VME64)
Acquisition crate
Fan-trays
CIBUS
To be installed:
Electronics cards
HV Power supplies
Patch-cords
Rack in BAT
Front view
Rear view