General R2E Activities Status Report

General R2E ActivitiesStatus Report

M. Brugger for the R2E Study Group

30th LMC Meeting, September 30th

Many Thanks for The Continuous SupportEN/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,…

R2E Status Report

Critical Area Overview

2September 30th 2009

Collimation Area(high losses possible at an early stage)

LHCb: reaches early significantradiation levelsInjection & Adjacent Areas:

losses on collimators and dumps on TED

High-Luminosity Experiments(UJs, RRs, possibly UPS)

LHC Tunnel Electronics

R2E Status Report 3

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…

Observation: Every postulate has its flaw...

Lot’s of improvements were implemented…

Let’s Start with an Example

September 30th 2009

R2E Status Report 4


September 30th 2009

SHIELDING

additional Monitoring

SHIELDING

R2E Status Report 5

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…

Observation: Every postulate has its flaw...

Lot’s of improvements were implemented… But there is some truth…

Much more work is required


September 30th 2009

R2E Status Report 6


September 30th 2009

future high radiation

‘bulky’ electronics

limited shieldingoptions

difficult relocation

R2E Status Report

Good News


R2E Status Report

This Presentation Focuses On

The Achievements 8September 30th 2009

R2E Status Report

As a Reminder …


R2E Status Report 10

The R2E Mandate 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

Prioritization

Inventory

Short-Term

TestingMonitoring

CoordinationLong-Term

Mid-Term

September 30th 2009


R2E Structure1. Policy for Electronics

installed in areas with elevated radiation levels (R2E)

2. Evaluation of Radiation Levels: simulations, monitoring, proposal of measures and general coordination (R2E)

3. Structure to implement the Policy (RadWG)

4. Organization and Analysis of Radiation Tests (RadWG)

5. Control (LHC Point-Owners)

R2E

RadWG

Point-Owners

Equipment Owners

Installations

Testing

Monitoring

Electronics Policy

LHC Machine Committee

September 30th 2009

R2E Steps ( first part of 2009) Part 1 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

Prioritization

Inventory

Short-Term

Short-TermandMid/Long-Term

September 30th 2009

12

R2E Status Report


R2E Steps (2009) Part 2 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, …)

Inventory, Monitoring

Prioritization

Testing

Mid-Term

September 30th 2009

R2E Status Report

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)

Documentation & Reports


http://www.cern.ch/r2e

http://www.cern.ch/info-r2e-documents

http://r2e.web.cern.ch/R2E/Related/CERN_Memorandum_IR3_jul2008.pdf

https://edms.cern.ch/comment/977085

https://r2e.web.cern.ch/R2E/Reports/r2e_chamonix_2009.pdf

https://edms.cern.ch/comment/985313

http://r2e.web.cern.ch/R2E/Reports/MidLongTerm_ActionPlan_final.pdf

http://r2e.web.cern.ch/R2E/Reports/memorandum_final.pdf

http://r2e.web.cern.ch/R2E/Related/RadiationTesting/SummaryPCs_24june09_v4.pdf

http://r2e.web.cern.ch/R2E/Reports/LHC-R2E_P8-review_v5.1.pdf

http://r2e.web.cern.ch/R2E/project_manager/projList.php

http://indico.cern.ch/event/R2E_school_2009

http://r2e.web.cern.ch/R2E/Related/R2E_School/ExecutiveSummary.pdf

R2E Status Report

Mitigation Project Tracking Tool


list of projects

toggle betweenfinished and ongoing 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

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

Current R2E Main Objectives


R2E Status Report

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 relocationAdvanced: 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

Update: Finished & Ongoing Projects


R2E Status Report

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 relocationOngoing: 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

Update: Finished & Ongoing Projects


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


Location of the future shielding

Holes will be filledAdditional penetration in plug

Shielding wall will be install parallel to this wall + 90deg leg (L-shape)

- 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 hadron fluence)- Relaxed situation for 2010 operation- Long-Term solution will require measurements- Possible issue with low-energy neutrons

R2E Status Report

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

Partly Ongoing and Future Steps


R2E Status Report

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)

Monitoring Improvements


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 Viewer to checkcorrelations

Still under development Final Beta-Version ready

for extended injection Tests (End Of October)

R2E Status Report

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

Furthermore…


http://indico.cern.ch/event/R2E_school_2009

http://r2e.web.cern.ch/R2E/Related/R2E_School/ExecutiveSummary.pdf

http://r2e.web.cern.ch/R2E/Related/RadiationTesting/SummaryPCs_24june09_v4.pdf

R2E Status Report

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

Besides, Next & Some Requirements


R2E Status Report

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

Conclusions


R2E Status Report

Backup


Mitigation Project - Status 32

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

Online Tracking Tool

September 23rd 2009


Fire and ODH Control Rack Relocation (including detectors)

September 23rd 2009

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

September 23rd 2009

Location of the future shielding

UJ87

Holes will be filled

Additional penetration in plug



September 23rd 2009

Shielding wall will be install parallel to this wall + 90deg leg (L-shape)

UJ88



September 23rd 2009

crane tests:



September 23rd 2009

intermediate layout



September 23rd 2009

final layout intermediate layout



September 23rd 2009

final layout


UJ23/22 and 87/88 Shielding Improvement

September 23rd 2009

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

September 23rd 2009


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

New Order For Iron Shielding

September 23rd 2009


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

P1/P5 Shielding of UJs

September 23rd 2009



September 23rd 2009


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

Budgeting Update - Cryogenics

September 23rd 2009

General R2E Activities Status Report

Documents

Transcript of General R2E Activities Status Report