General R2E Activities Status Report

General R2E ActivitiesStatus Report 30th LMC Meeting, September 30th M. Brugger for the R2E Study Group Many Thanks for The Continuous Support EN/MEF, EN/HE, EN/EL, BE/OP, DG/PRJ, DG/SCR, EN/CV, BE/ABP, TE/ABT , EN/GMS, TE/EPC, FP/PI, BE/ASR, PH/LBD,…

Critical Area Overview Collimation Area(high losses possible at an early stage) High-Luminosity Experiments(UJs, RRs, possibly UPS) LHC Tunnel Electronics LHCb: reaches early significant radiation levels Injection & Adjacent Areas: losses on collimators and dumps on TED R2E Status Report

Let’s Start with an Example • Observation: • Every postulate has its flaw... • Lot’s of improvements were implemented… Postulate: Measurements: “Everybody believes in them… except the person who did the measurement…” Simulations: “Nobody believes in them… except the person who performed it…” Recommendations: “Everybody argues… including the person who is giving them … “ Conclusion: … it takes time… R2E Status Report

Let’s Start with an Example SHIELDING additional Monitoring SHIELDING R2E Status Report

Let’s Start with an Example • But there is some truth… • Much more work is required • Observation: • Every postulate has its flaw... • Lot’s of improvements were implemented… Postulate: Measurements: “Everybody believes in them… except the person who did the measurement…” Simulations: “Nobody believes in them… except the person who performed it…” Recommendations: “Everybody argues… including the person who is giving them … “ Conclusion: … it takes time… R2E Status Report

Let’s Start with an Example future high radiation limited shieldingoptions difficult relocation ‘bulky’ electronics R2E Status Report

Good News R2E Status Report

This Presentation Focuses On The Achievements R2E Status Report

As a Reminder … R2E Status Report

The R2E Mandate Short-Term Inventory Prioritization Testing Monitoring Mid-Term Coordination Long-Term • The R2E Study Group forms a small committee consisting of experts in the various fields related to electronics damage and shall drive other working groups (RADWG). This way the R2E assists LHC operations and equipment groups with expert knowledge and assessments of radiation-induced failures in electronics of the accelerator, as well as directly coordinates studies of remedial actions: • Immediate • propose and evaluate short-term measures to reduce failure risks • conduct simulations studies to evaluate radiation fields • establish, extend and evaluate the inventory of information needed to assess radiation-induced electronics failures • ensure accurate monitoring of radiation fields in critical areas to evaluate risks of electronics failures • advice on planned CNGS irradiation tests, including calculations • commission and evaluate machine studies to understand the possibility of reducing/displacing losses • Long-Term • coordinate studies of radiation-induced failures, including calculations and proposals of solutions, and complement the inventory with measured data and experience gained during operation • advice on further dedicated irradiation tests, including calculations • assist LHC operations and concerned groups in the identification and short-term mitigation of failures R2E Status Report

R2E Structure LHC Machine Committee • Policy for Electronics installed in areas with elevated radiation levels (R2E) • Evaluation of Radiation Levels: simulations, monitoring, proposal of measures and general coordination (R2E) • Structure to implement the Policy (RadWG) • Organization and Analysis of Radiation Tests (RadWG) • Control(LHC Point-Owners) Point-Owners R2E Monitoring RadWG Testing Equipment Owners Installations Electronics Policy R2E Status Report

R2E Steps ( first part of 2009) Part 1 Prioritization Inventory Short-Term Short-Term and Mid/Long-Term • Priority List of Areas • based on available Monte-Carlo simulations • linked to operational assumption for the various ‘years’ • Update and detailed analysis of Simulations • Collection of existing simulations • Launch of new simulation effort • clear identification of critical areas and respective radiation levels (over time!) • Relocation/Replacement of equipment from UX85 • work completed • Preparation of TZ76 and displacement of equipment in UJ76: • TZ76 preparation fully integrated • infrastructure preparation (cooling,…) done • UPS relocation and pre-cabling for PC relocation • Additional shielding • UJ76 SafeRoom, RRs, new maze, P6 ducts, not needed holes & penetrations R2E Status Report

R2E Steps (2009) Part 2 Inventory, Monitoring Prioritization Mid-Term Testing • Detailed Point-Iterations • visit of areas looking into integration options, available monitoring (Etat des Lieux) • Priority List of Equipment (Classes) • direct interaction with equipment groups (starting with machine protection) (!!! to be continued !!!) • identified safety related equipments • proposal to prepare ‘short-term’ actions (ongoing) • RadWG: organization of radiation tests in CNGS and outside CERN (FIP, QPS, Cryo, Power Converters …) • Tests conducted at PSI, Louvain, Prospero, continuous testing in CNGS • Documentation • R2E Website (Presentations, Minutes), R2E Library, Picture Gallery of Critical Areas, Inventory of Monitor, Publications (ECRs, Chamonix, Point-Reviews, …) R2E Status Report

Documentation & Reports besides R2E meetings, minutes and presentations @ LMC, Chamonix,… • R2E Website: www.cern.ch/r2e • Document Database (linked through above): www.cern.ch/info-r2e-documents • Memorandum for possible temporary move betatron cleaning to IR3 • UJ76 Relocation (see ECR) • R2E Status Report @ Chamonix (see paper) • RR73/77 Shielding Improvement (see ECR) • Mid/Long-Term Action Plan (see report) • R2E Memorandum for Short-Term Resources • Power-Converter Summary (see internal report) • Point-8 Iteration Summary (see final draft) • Point-1/5 Iteration Summary (in preparation) • Online Mitigation Project Tracking (see link) • R2E Radiation School (see program and summary) R2E Status Report

Mitigation Project Tracking Tool toggle betweenfinished and ongoing projects list of projects acquire statusreport check to have all comments - The tool is functional and used in R2E- Some improvements to be done - Some cosmetics required R2E Status Report

30.09.2009Status Report … R2E Status Report

Current R2E Main Objectives • short-term: minimize the risk of radiation induced electronics failures • perform possible relocations (within shutdown constraints) • install additional shielding • improve monitoring to prepare analysis for early operation • mid-term: operational experience and towards a complete solution • prepare (plan for) additional shielding • preparations of early relocations (in case time slots become available or urgent requirements) • finalize equipment inventory • prepare integration studies (full relocations, alternative solutions) • long-term: implement subsequently the chosen solution, new policy and continuous follow-up • based on early measurements, decision/integration on long-term solution R2E Status Report

Update: Finished & Ongoing Projects Finished: • RR73/77,UJ76 shielding and TZ76 preparation • final integration and installation of mobile shielding plug and lateral shielding walls, TZ76 preparation, UPS removal,… • US85: Fire/ODH Detectors and Control Rack Relocation • US85 Shielding of Safe-Room • BIS/BIC/PIC/WIC Study (preparation done) of possibly short-term relocation Advanced: • Order of New Iron Shielding Blocks (~2MCHF) • UJ22/23 & UJ87/88 Shielding Improvements • Full Integration Study for US85 Equipment • Missing Point-Iterations and Equipment Inventories R2E Status Report

Update: Finished & Ongoing Projects Finished: • RR73/77,UJ76 shielding and TZ76 preparation • final integration and installation of mobile shielding plug and lateral shielding walls, TZ76 preparation, UPS removal,… • Fire/ODH Detectors and Control Rack Relocation • US85 Shielding of Safe-Room • BIS/BIC/PIC/WIC Study (partly preparation) of possibly short-term relocation Ongoing: • Order of New Iron Shielding Blocks (~2MCHF) • UJ22/23 & UJ87/88 Shielding Improvements • Full Integration Study for US85 Equipment • Missing Point-Iterations and Equipment Inventories R2E Status Report

RR73/77and UJ76 Shielding, TZ76 RR73/77 TZ76 Preparations UJ76 Safe Room Shielding R2E Status Report

US85 Safe-Room Shielding R2E Status Report

UJ87/88 – UJ23/22 – Shielding Shielding wall will be install parallel to this wall + 90deg leg (L-shape) Additional penetration in plug Holes will be filled - UJ88 Shielding already in place for the last TI2/8 tests - UJ87 Shielding installed yesterday - First analysis confirms the expected improvement - ~Factor of 10 less radiation (high-energy hadronfluence) - Relaxed situation for 2010 operation - Long-Term solution will require measurements - Possible issue with low-energy neutrons Location of the future shielding R2E Status Report

Partly Ongoing and Future Steps • Shielding integration studies for: • UJ14/16 • UJ56 (limited to lower floor) • RR13/17/53/57 • Early relocation of critical electronics (scenarios partly available): BIC/PIC/WIC, Fire/ODH, Timing, Remote Reset,… • Budget estimate and planning update for consolidation project • Relocation of Cryo-equipment in the US85 including local iron shielding for new rack locations (bottom floor) • study ongoing, final location defined, shielding foreseen • Integration studies for full relocations of critical areas to verify the possibility, impact and costs and constraints • Study of alternative solutions possibly including heavy civil engineering R2E Status Report

Monitoring Improvements • Point-Inspections and review of monitor locations • Additional RadMon calibration measurements and extension of response analysis to low- and intermediate-neutron energies • calibration experiment at CERF for mixed fields calibration • additional measurement proposal at PTB (including funding through EFNUDAT), Prague (low-energy neutrons) and possible at 14MeV • Passive detectors (TLD monitors) installed in LHC to allow for early monitoring even at low radiation levels • more than 200 samples (RP locations, RadMons, R2E specific) • Relocation of some RadMons in LHC in order to increase statistics and allow for early extrapolation of measured values for critical areas • Voltage setting change of RadMons in DS in order to optimise the possible analysis (ARC remains unchanged) • Combined Monitoring Tool for offline analysis, first beta-version will be available for injection tests end of October • New RadMon Developments • Battery driven RadMon (soon ready) • Next Generation (internal workshop to be held October 27th) R2E Status Report

TLDs around the LHC: e.g, Point-8 Right R2E Status Report

Combined Monitoring Tool • Monitor selection through areas (graphical, list, beam element, DCUM,…) • Easy navigation troughcritical areas • Numerous monitor types at the same time • BLMs, RadMons, BCTs, • RAMSES (in work) • Collimator settings • Combined Viewerto checkcorrelations • Still under development • Final Beta-Version ready for extended injection Tests (End Of October) R2E Status Report

Furthermore… • R2E Radiation school (see program and summary) • Jointly organised with PH-ESE, 2-3 June: ~55 participants, 16 lecturers • Very good feedback, intensifies exchange between experiments and the machine • Power-Converters: • Internal discussion to evaluate future strategy • Strong constraints in terms of what can be done • Summary document available (see link) • WIC Failure during TI8 Injection Test • WIC failure observed in June (stopped CNGS and LHC Injection) • Immediate analysis of available measurement data • FLUKA simulations to estimate respective radiation levels • Detailed review of WIC layout and available test measurements • Analysis confirmed that the failure was very unlikely • Foreseen WIC relocation (only one rack is concerned) to location upstream the injection line collimator, urgency to be defined following next (last) injection tests • During the last TI2/8 test about 4x1013 protons were ‘dumped’ on the upstream collimator -> no WIC failure observed -> still to be relocated when time R2E Status Report

Besides, Next & Some Requirements • Simulation Studies required for: • P7: additional absorbers for UJ76 • P8 losses in RA84/86 and impact on adjacent UAs • P1/5 update: UPS, Spectra • P8/2 shielding studies • P1/5 shielding studies • DS/ARC update on radiation levels • Point-Iterations and reports • Detailed and continuous review during early operation - direct link to operations through point-owners • Additional Shielding Improvements (e.g., P6, US85 SafeRoom after measurements) • R2E Policy for the Accelerator Sector R2E Status Report

Conclusions • A brief overview of the ongoing R2E related work • Numerous mitigation actions and other improvements were directly followed through R2E with a focus on possible short-term actions (some mid/long-term parts had to be put on hold) • Important inter-departmental effort to get as far as possible • Stringent time constraints, it will not be enough to do things ‘sequentially’ (i.e., first observe and then react) • Parallel work required (we started in this direction) • Required resources will not decrease but rather… • We have the feeling of gone a good step forward, but… • Continued support required from various key contributors (Planning and Integration, Point-Owners, FLUKA Team, RadMon Team, RP, RadWG,…) • Early operation will be an important input • Many Thanks to Everybody R2E Status Report

Backup R2E Status Report

Online Tracking Tool • aim is to continuously follow up on the Mitigation Project (not only R2E tasks as listed in the ‘Open Actions’) • facilitate ongoing coordination and increase ‘transparency’ • structured by: • Project (active or finished) • Task (multiple, status, deadlines, last comment) • Comments (text, documents, links) • reporting option • for status summary • or full report including all comments • directly linked on the R2E-webstite Mitigation Project - Status

Fire and ODH Control Rack Relocation (including detectors) Mitigation Project - Status Fire detectors relocated Cabling, installation prepared offline Temporary safety procedures were put in place Control rack relocated in short time Fully commissioned

UJ87/88 Shielding Improvement UJ87 Additional penetration in plug Holes will be filled Location of the future shielding Mitigation Project - Status

UJ87/88 Shielding Improvement UJ88 Shielding wall will be install parallel to this wall + 90deg leg (L-shape) Mitigation Project - Status

UJ87/88 Shielding Improvement Mitigation Project - Status crane tests:

UJ87/88 Shielding Improvement Mitigation Project - Status intermediate layout

UJ87/88 Shielding Improvement • intermediate layout Mitigation Project - Status final layout

UJ87/88 Shielding Improvement Mitigation Project - Status final layout

UJ23/22 and 87/88 Shielding Improvement Mitigation Project - Status Status: UJ87/88 shielding in place (final work performed yesterday) Remaining work for P8 to be scheduled afterwards (possible) Work for P2 to be prepared (simpler integration), more difficult to find a two-day slot in the planning -> agreed on two separate days Early measurements required to check for final shielding efficiency Not optimum solution concerning the lateral opening, as well as low-energy neutrons

Shielding Block Inventory Mitigation Project - Status

New Order For Iron Shielding tender documents prepared iteration with FI finished (one additional company added) final tender documents approved distributed to companies firms have 4 weeks to respond supply of 1000 cast iron or steel blocks (800mmx400mmx400mm) the total mass of all blocks is about 925 tonnes. delivery is foreseen in two batches, one half 3 months from the placement of the Contract, the second half to be completed 3 months later storage place identified Mitigation Project - Status

P1/P5 Shielding of UJs • first integration studies available for UJ14/16 • integration team working on optimum (maximum) solution for UJ56 (important space and handling constraints) • final decision on shielding integration requires • updated shielding block inventory (available) • simulation studies to optimize the shielding layout • combined integration studies to evaluate mechanical installation • preparation of shielding blocks • slot for installation (estimate exists for two weeks) • full relocation campaign and alternative solutions to be studied in parallel Mitigation Project - Status

P1/P5 Shielding of UJs Mitigation Project - Status

Budgeting Update - Cryogenics • Replacement of pressure transmitter (new feature) is not yet included as it would require heavy pipe work. • Equipment concerned in US85: • Cold Compressor Box (QURCB) and ex-LEP, cold box (QURA) • Consolidation concerned: • magnetic bearings, PLC's, profibus equipment, Valve positioners • and associated cabinets and cabling • Cost estimate: • Special cables for cold compressors: 100'000 CHF • Cryo cabinets and work: 60'000 CHF • EN-EL cabling for cryo: 54'000 CHF • Siemens positioners: 60'000 CHF • Ethernet and controls infra: 20'000 CHF • => Total: 294'000 CHF Mitigation Project - Status

General R2E Activities Status Report