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

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

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 LSC - BI Status

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 LSC - BI Status

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 LSC - BI Status

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 LSC - BI Status

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 LSC - BI Status

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 48-50-52 agreed, scheduled for end 2014 Dummy septum 15 screen 7/2/2014 LSC - BI Status

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 LSC - BI Status

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 LSC - BI Status New BWSRE scanner parts

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 LSC - BI Status

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 LSC - BI Status

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 10-12 weeks delay on baseline schedule Expected ready for installation in April, working closely with MME and MEF LHC BWS 7/2/2014 LSC - BI Status

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 LSC - BI Status

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 LSC - BI Status

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 LSC - BI Status

Backup material 7/2/2014 LSC - BI Status

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

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 LSC - BI Status Slide courtesy B.Dehning/S.Grishin

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 LSC - BI Status

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

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

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