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1. ARW Overview 2. Relevant Outcomes 3. Personal Opinion Who? Where? What 2. Relevant Outcomes Accelerator Community CERN Machine Protection 3. Personal Opinion Accelerator Reliability Workshop 2009

1. ARW Overview 2. Relevant Outcomes 3. Personal Opinion Who? Where? What 2. Relevant Outcomes Accelerator Community CERN Machine Protection 3. Personal Opinion Accelerator Reliability Workshop 2009

Accelerator Reliability Workshop 2009

Attendees Accelerator Eng. Corp. (Japan) x4 AccSys Technology, Inc . (USA) 1 Australian Synchrotron Brookhaven National Lab (USA) x3 Canadian Light Source CERN x2 CNSC (CANADA) DESY (Germany) Diamond Light Source (UK) Euro. Synch. Radiation Facility (Fra.) Fermi Lab (USA) Indiana Univ. Cyclotron Facility Institut Curie (Fra.) Instrumentation Tech. (Slovenia) ISIS, RAL (UK) JASRI/SPring-8 (Japan) Jefferson Lab (USA) KEK (Japan) 1 Lawrence Berkeley National Lab LNL-INFN (Italy) National Inst. of Radiological (Japan) x3 NSCL @ Michigan State University x2 NSRRC (Taiwan) Paul Scherrer Institut (Switz.) Pohang Accelerator Lab. (Korea) Sincrotrone Trieste S.C.p.A. (Italy) SLAC National Accelerator Lab. x5 SNS/Oak Ridge National Laboratory Spallation Neutron Source / ORNL St James Software (S.A.) Synchrotron SOLEIL (France) UPC (Spain) Uppsala University (Sweden) TRIUMPH (Canada) 31 Accelerator Reliability Workshop 2009

Program Monday: Experience/Achievements to Date (4 talks) Refurbishments and Up-grades (4) Quality Assurance (2) Tuesday: Engineering & Design for Reliability (6) Hardware Reliability - System Expert Reports (4) Poster session Wednesday: Software Reliability - Automated Routines (8) Tour of TRIUMF Thursday: Failure Analysis (4) / Human Factors (4) Operations Management (4) / Maintenance (3) Friday: How Radiation affects Reliability (3) Closing session Accelerator Reliability Workshop 2009

Program Monday: Experience/Achievements to Date (4 talks) Refurbishments and Up-grades (4) Quality Assurance (2) Tuesday: Engineering & Design for Reliability (6) Hardware Reliability - System Expert Reports (4) Poster session Wednesday: Software Reliability - Automated Routines (8) Tour of TRIUMF Thursday: Failure Analysis (4) / Human Factors (4) Operations Management (4) / Maintenance (3) Friday: How Radiation affects Reliability (3) Closing session Accelerator Reliability Workshop 2009

1. ARW Overview 2. Relevant Outcomes 3. Personal Opinion Who? Where? What 2. Relevant Outcomes Accelerator Community CERN Machine Protection 3. Personal Opinion Accelerator Reliability Workshop 2009

Reliability Definition Actual operating hours divided by expected operating hours Doug Preddy, Triumf Availability = Time_Operational / Total_Time Reliability = Time_Operational / Total_Time + Down_Time Reda Tafirout, Triumf Time is a very important part of the reliability definition: Expected uptime, repair and maintenance times, idle time, and unplanned occurrences all [contribute] Experience is one of the main influences [in improving reliability] Accelerator Reliability Workshop 2009

Other Talks BASIC RELIABILITY THEORY … ~ 50% relevant to CERN = interesting points …. … Two / Three sentence of each … BASIC RELIABILITY THEORY FAULTS and RELIABILITY in the OPERATION of PLS JLAB / NSCL EXPERIENCE to DATE & AVAILABILITY LESSONS LEARNED from 16 YEARS HERA OPERATION JEFFERSON LAB REFURBISHMENTS and UPGRADES GENERAL RELIABILITY at RHIC ADAPTIVE MAINTENANCE based on RELIABILITY POST-MORTEM DIAGNOSIS for TAIWAN LIGHT SOURCE HUMAN PERFORMANCE MAINTAINING RELIABILITY : TRIUMF POWER INTERRUPTIONS SNS MAINTENANCE MANAGEMENT at SNS TRIUMF RADAITION RELIABILITY ISSUES Etc… Accelerator Reliability Workshop 2009

LHC Reliability Quantify Baseline LHC reliability? hours of machine operation expected in a year. Time @ Physics? luminosity @ physics? Lum. + Energy + Time? Assign $ value to unforeseen stoppages? institutes assign 25-100k$ lost per hour of unforeseen stoppages. Risk of sudden floor fracture? LHC dipoles masses = LEP? floor designed to hold weight? Root Cause Analysis for every failure? complete understanding (mitigations) for all faults. TAPROOT. Reliability DB for failure tracking? Weibull mechanism = very good scope for failure tracking. CERN repository of proven design practices? influence future designs – at CERN – beyond LHC. Accelerator Reliability Workshop 2009

Hot-Swappable Equipment? RF / PCs / Cooling RF, Powering and Cooling Reliability = weaknesses everyone is fighting. How reliable are these in LHC? Documents / FMEA / Calculations made? Built for ‘Maintainability’? Preventive Maintenance Scheduled? N.B. Running through a shutdown = NO preventive maintenance… Hot-Swappable Equipment? Environmental Monitoring? Of buildings which house PCs and Heavy Machinery Air Flow Models? Model air flow? Or trial-and-error? Or rule-of-thumb? Diversity of Staff? For all equipment = more than one expert = several experts. Accelerator Reliability Workshop 2009

work done by CERN duplicated in other labs, and vice versa Collaborations work done by CERN duplicated in other labs, and vice versa SLAC Hot Swap Power Converter technology? involved in ATCA? VME replacement bus architecture 0.99999 reliable Considering RIOC? redundant IO channel for RIOC and others Certified ‘logbook’ software SJ Soft? 10/9 logbook erased… ORNL should see MTF and EDMS CERN should advertise the RADMON CERN could help TRIUMF with cables for radiation Accelerator Reliability Workshop 2009

1. ARW Overview 2. Relevant Outcomes 3. Personal Opinion Who? Where? What 2. Relevant Outcomes Accelerator Community CERN Machine Protection 3. Personal Opinion Accelerator Reliability Workshop 2009

Operator Screens for example, should be considering ‘Human Factors’ Personal Opinion subjective! LHC MPS Dependability Analysis beyond anyone else’s No-one showed anything close No-one mentioned anything after my talks Right people may not have been there Next Gen (ILC etc) starting with reliability specification CERN’s work = very relevant Extend LHC MPS Study = beyond safety let’s figure out what LHC reliability could be Human Factor’s = Very Interesting Humans Operating – Man-Machine Interface Humans Designing – team-work, design is always subjective Operator Screens for example, should be considering ‘Human Factors’ Accelerator Reliability Workshop 2009

More Personal Opinion VERY subjective! September 10th Quite a few questions in coffee times Cost of repair > some institute’s annual budget… Some knew more than me about what happened… N.B Lessons learned are THE method for improving systems. One thing which troubles me: US = Department of Energy is there… CAN = Nuclear Regulation for everything… we are lucky… So far… No hands on regulation… Accelerator Reliability Workshop 2009

Next Steps Much higher CERN involvement in next Accelerator Reliability Workshop? In taking account of many aspects such as: Software Interlocks, Post-Mortem, EDH, EDMS, MTF, Powering, Cooling, Radiation Management, Personnel Safety, Logging, Analysis, Human Interface … Dedicated session to safety systems should be foreseen rest of industry fighting same battles => future projects (ILC, CLIC, ITER) need the same / similar systems. Workshop partnered with Workshop on Accelerator Operations (WAO) WAO 2010 is next ARW 2011? Could be organised by CERN? Accelerator Reliability Workshop 2009

And then… \\cern.ch\dfs\Users\b\btodd\Public\ARW2009\ARW2009_ROC_0v2.doc http://www.triumf.info/hosted/ARW/index.htm Accelerator Reliability Workshop 2009

FIN Accelerator Reliability Workshop 2009