LS 2 LHC Performance Workshop Chamonix 2014 Marzia

LS 2 @ LHC Performance Workshop – Chamonix 2014 Marzia Bernardini, EN-MEF

Summary “The future belongs to those who prepare for it today. ” Malcolm X • Introduction • Methodology • Activities from Projects during LS 2 in LHC • Maintenance • Consolidations and other activities • Preliminary schedule • Conclusion Marzia Bernardini – Chamonix 2014, 25 th Sept. 2

What about LS 2? The LS 2 project include the activities across the LHC, Injectors and LHC experiments: • • Resources levelling across the accelerators one of the main challenge of LS 2 !!! The activities will be declared in Plan, with a similar approval process as LS 1. Practical issues: • • Temporary storage areas and “bases de chantier” will be installed at the earliest 6 months before, and dismounted at the latest 6 months after LS 2; Buffer zone availability: most probably the existing areas are not sufficient; In this presentation LS 2 @ LHC Marzia Bernardini – Chamonix 2014, 25 th Sept. 3

LS 2 @ LHC: how to find out what should be done? Project Leaders and Coordinators: • • Group Leaders: TE, EN, IT, GS Hi-Lumi Accelerators Consolidation Project Activities related to PROJECTS Maintenance • part of information already available; • part will be discovered during Run 2! Other activities, not yet assigned Marzia Bernardini – Chamonix 2014, 25 th Sept. 4

Main projects “ Coming together is a beginning. Keeping together is progress. Working together is success. ” Henry Ford. 5

Main projects for LHC, during LS 2 Accelerator consolidation Project: - Baseline being reviewed – No official baseline for the moment Hi. Lumi LHC: - P 2 11 T dipoles and new collimator (TE-MSC and BE- ABP) - Installation in the Dispersion suppressor Region; Replacement of 8 T Dipole with 2 Dipoles 11 T and a warm collimator - P 4 TE-CRG - Debottleneck the cold power and increase the redundancy; First durations 8 months work + 3 months commissioning. - P 7 SC link (TE-MSC) - Displacing EPC and DFB in the adjacent TZ tunnel via SC links, to protect PC from Radiation Issues Marzia Bernardini – Chamonix 2014, 25 th Sept. 6

Maintenance 7

Maintenance: TE TE-CRG: • Main maintenance of compressors: Currently 12 months, being discussed the possibility to reduce to 8 months critical path! TE-VSC • • • Maintenance on all the vacuum pumps, valves and instrumentation; Beam gas injection system in LSS 4; Remote reconditioning of NEG cartridge across the ring; Exchange of ion Pumps at MKBs; Corrective maintenance on defective PIMs; Leak test: not maintenance but operational activity. TE-EPC • • • Corrective and preventive maintenance: brainstorming in 2017 to define the activities of LS 2; Maintenance on all the equipment, according to the experience of run 2; Replacement of Power Converters in RRs. Before LS 2 – during EYETS in 2016: Upgrade of the control system (FGC-lite) on 60 A. TE-MPE • • Maintenance of all the system: Energy Extraction, QPS, …. ELQA: not maintenance but operational activity Marzia Bernardini – Chamonix 2014, 25 th Sept. 8

Maintenance: EN EN-CV: • Regular maintenance of the ventilation system in surface and underground; • Special maintenance of UW, SU and SF; • Maintenance of rotating machine: engines of pumps, ventilators… • What was done during LS 1, to be repeated during LS 2: Révision mécanique des ensemble moteurs pompes et motos ventilateurs (20. 000 heures de fonctionnement). Nettoyage mécanique d’échangeur de chaleur (+ éventuel nettoyage chimique) Remplacement d’organes ayant une durée de vie limitée comme les compensateurs, les manchettes de vannes et les membranes sur les clapets anti-retour (hydrostop) Remplacement dessicants sur les sécheurs d’air comprimé Révision des tableaux Hazemeyer Remplacement de morceaux ou de la totalité de packing de tours Remplacement de vannes batardeau sur les tours de refroidissement Marzia Bernardini – Chamonix 2014, 25 th Sept. 9

Maintenance: EN EN-EL • 400 k. V and 66 k. V Maintenance: • • Max power during SD = 60 MW Duration ~ 8 wks • All LHC Points: • • Preventive and corrective maintenance ; 1 week per point Marzia Bernardini – Chamonix 2014, 25 th Sept. 10

Maintenance: EN EN-STI: • Maintenance or replacement of collimators in LHC collimation points, according to the performances during Run 2: • Several collimators will be more than 10 years old in LS 2! • Dismounting to ease operation and co-activities in the collimation points, according to the need from other groups. • Possibility to act on the IR 7 dispersion suppressors: • • in case of unexpected problems with the proton cleaning; NOT in the baseline for the moment. Marzia Bernardini – Chamonix 2014, 25 th Sept. 11

Maintenance: IT and GS IT-CS • Replacement of the actual radiating cable and on the whole LHC machine (Tetra inside): • to prevent the deterioration of the internal insulation. • Computing Center - Routers to be replaced due to obsolescence: • Impact on Technical network and General services Network. GS-ASE • • Maintenance DI, ODH, access system and evacuation (surface and underground); Tests: siren, ODH flashes, … Marzia Bernardini – Chamonix 2014, 25 th Sept. 12

Maintenance …but also RF, Kickers, Beam Instrumentation, Controls, …. Marzia Bernardini – Chamonix 2014, 25 th Sept. 13

Other consolidations 14

TE-CRG • Heat exchangers of Inner Triplets @ P 1 and P 5: • • • to increase the capability of heat extraction due to the increased beam parameters (MSC & CRG) HW limitation before HL-LHC; Alara procedure to be applied, to evaluate the need to implement this during LS 2. • Quench line consolidation: • mechanical consolidation of the supports, in case of a major quench. • Redundancy on the LHC warm compressor: • to decrease the MTTR from 1 week to 1 day. • LHe: existing storage equipped with small liquefier: • To reduce the Helium external storage from 90 t to 30 t • (QRL consolidation on bellows) • • No NCs left in the machine after LS 1 Minor replacement wrt LS 1 Marzia Bernardini – Chamonix 2014, 25 th Sept. 15

TE-VSC • Turbo pumps of LSS cryostats - replacement • Turbo pumps of arcs & QRL : replacement & installation of long cables: • • Turbo controller moved to REs. Major cabling campaigns. • Consolidation activities around the ring: • • • Valves & pressure gauges; ageing Elastomer joints (O-ring) on W bellows and magnet feet: • Reliability vs radiation doses - action plan TBD. Large capacity primary pumps, replaced by dry technology pumps; Defective PIMs to be replaced; Consolidation of Beam Vacuum Local Pumping system in LSS 3 and LSS 7. Marzia Bernardini – Chamonix 2014, 25 th Sept. 16

TE-MSC • Replacement of about 15 Magnets: • • Time needed: about 3 months per magnet (not including Warm-up and Cool-down) In Sector 3 -4: at least 4 magnets to be replaced (3 SSS and 1 Dipole) LS 1: 8 Cryodipoles replaced • Warm magnets: • • Radiation resistant coil for MQW & MBW: installation of protective screen to protect the coil from radiation, at Point 3 and Point 7. About 35 units to be modified • Preparation for LS 3 to ease dismantling and installation of IT Marzia Bernardini – Chamonix 2014, 25 th Sept. 17

TE-MPE • Replacement and upgrade of all the DYPQ racks: • • • Quadrupole circuit; On the whole LHC; To increase in reliability and reduce the downtime; Support needed from EN-HE; Need surface storage. • Upgrade of the BIS, which includes 17 controllers, in LHC and Experiments: • • • Replacement of ALL the electronics, which is obsolete; Mostly on Surface; Heavy commissioning and starting phase. Marzia Bernardini – Chamonix 2014, 25 th Sept. 18

EN-CV • Renewal of: • • • Compressed air plant for LHC; HVAC warm water for underground ventilation in LHC; Fire fighting water pipeline for surface Points; • Relocation and replacement of: • • Air Handling Units of the TU; Packing of the cooling towers …other activities according to the performances during Run 2. The related networks will be out of services during the consolidation and maintenance activities. Marzia Bernardini – Chamonix 2014, 25 th Sept. 19

EN-STI • Under the Collimation-Project, in collaboration with BE-ABP: Studies in progress about the possibility to maximise the replacement of collimators during LS 2: • P 7: upgrade of secondary collimators, in view of HL-LHC, following ALARA principles; • P 1 and P 5: consider improvement of tertiary collimators that are exposed to asynchronous dump (possible need to redesign). Support from: TE-VSC, EN-EL, EN-CV, EN-MME. • Add (or replace) during LS 2 also 12 TCDIs in the transfer lines: • Need of increased robustness and attenuation for the use with LIU beams. • Need to develop ALARA procedures. Marzia Bernardini – Chamonix 2014, 25 th Sept. 20

EN-EL Global consolidation activities, which will impact the LHC machine (NET 2025) • Jura Station consolidation: ME 9, SPS, Meyrin Machine network consolidation (HV, LV) 6 months min. • • Secours network must be renovated during RUN 2 to be fully operational for LS 2 ! The Autotransfert system will be out of service during the consolidation of Jura station. No supply from SIG, for CERN Not at the same time that 66 k. V maintenance Additional CERN station 400/66 k. V near Bois Tollot [CERN 2 400 k. V _220 MVA] New compensation on Meyrin Machine network (TE/EPC) Automatism of control and regulation consolidation for Diesel LHC Partial replacement of 18 k. V protection relays and 48 VDC systems on LHC surface Very tight and heavy schedule on the critical path!!! Studies in progress to optimize the activities Marzia Bernardini – Chamonix 2014, 25 th Sept. 21

EN-EL and EN-HE EN-EL • Replacement of 45% of the ducts of the WCC • • at Points 1, 2, 5 and 7; 55% already replaced during LS 1 • Optical Fibbers for LHCb Copper cabling (CTRL, DC) and optical fibbers requests at least 1 y before LS 2 Keep EL-CF informed since the early phases of new projects requiring cabling. EN-HE • Replacement of all the LHC lifts (except PM 18 and PM 32); • • • 3 months per lift: PM 15, PM 25, PZ 33, PZ 45, PM 56, PM 65, PM 76. PX 24, PM 54, PZ 85 and PM 85 will be replaced during the YETS and EYETS before LS 2; PX 15 will be replaced after LS 2; PM 15 and PM 54 Temporary lifts (Alimack) will be available during the replacement, capacity under investigation; PM 18 and PM 32 will be electrically refurbished before LS 2. Marzia Bernardini – Chamonix 2014, 25 th Sept. 22

IT-CS and GS-ASE IT-CS • Installation of a 2 nd new radiating cable on the whole LHC machine: • • To increase the transmission rate with 4 G+: Download up to 100 Mbps Access constraints related to logistic. No Wi-Fi available during LS 2, but 4 G+ validate the compatibility with users devices, before LS 2. GS-ASE • Alarm transmission Consolidation: • installation of anti fire cable; • LHC access system evolutions and upgrade • Refurbishment of the access point in SZ 6 (PZ 65) to support PM 65 lift replacement; • Follow-up and implementation of the recommendation of the Helium Spill WG. Marzia Bernardini – Chamonix 2014, 25 th Sept. 23

Proposal of First Draft skeleton 2018 July '18 Aug. '18 Sept. '18 Oct. '18 2019 Nov. '18 Dec. '18 Jan. '19 Feb. '19 March '19 April '19 May '19 June '19 July '19 Aug. '19 Sept. '19 Oct. '19 Nov. '19 WARM UP and TESTS CRYO Maintenance ELECTRICAL Maintenance & Consolidation Magnets replacement Other activities… HL activities @ P 2, P 4 and TZ 76 Lift replacement Cool Down @ P 7 HL activities @ LSS 7 COOL DOWN, TESTS and HWC Depending on the cool down and warm up sequence Windows available for activities Between 9 and 13 Months Marzia Bernardini – Chamonix 2014, 25 th Sept. 24 Dec. '19

Conclusions • LS 2 is a shutdown mainly dedicated to Injectors. . . but in the LHC and its Experiments, Maintenance and Consolidation are important. • LS 2 is a good opportunity, for LHC, to prepare LS 3: • Anticipating as much as possible activities for LS 3 (in particular HL-LHC); • Focusing on RP Issues and ALARA procedures. • Support activities will also be a challenge for support groups (HE, EL, CV, VSC, MME…) and coordination (MEF, Experiments TC). • LS 2 activities should not compromise LS 3 preparation. • Resources optimisation across the Accelerators and Experiments will be a key point! Marzia Bernardini – Chamonix 2014, 25 th Sept. 25

Conclusions “…While sustainability requires science, science requires people: people to do science, people to support science, and people to understand the nature of science. That’s where flagship projects like the LHC are so important. Not only do they give us valuable new knowledge, they also inspire people of all generations, helping to develop an appreciation of the nature and value of science, while encouraging the young to pursue scientific careers… …. We all benefit from sharing expertise, as the experiments at the LHC clearly demonstrate. They share knowledge while simultaneously competing strongly to get the result. After all, it is the result that counts and that benefits us all !!!” Rolf Heuer Marzia Bernardini – Chamonix 2014, 25 th Sept. 26