Accelerators Design for Reliability · 2018. 11. 21. · LINAC Accelerators Adrian Pitigoi –...
Transcript of Accelerators Design for Reliability · 2018. 11. 21. · LINAC Accelerators Adrian Pitigoi –...
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LINAC Accelerators Adrian Pitigoi – Empresarios
Odei Rey Orozco ‐ Universitaet Stuttgart (D
INTROD
MAXMAX ‐‐ (MYRRHA Accelerator (MYRRHA Accelerator eXperimenteXperiment)) MAX Task 4.2 ‐ SNS (ORNL) Linac ‐ Reliability modeling (methodology
MAX Task 4.2 SNS (ORNL) Linac Reliability modeling (methodology currently applied for NPPs –with RiskSpectrum (RS‐PSA)
MAX Task 4 4 MYRRHA Linac
MAX Task 4.4 ‐MYRRHA LinacReliability model
LINAC ACCELERATORS MODELLING
SNS Li li bilit l i SSNS Linac reliability analysis
‐ Feedback on SNS Linac performance
‐Modeling tool for Task 4 4
S
Modeling tool for Task 4.4
Draft preliminary conclusions and recommendations:
‐Maximize the reliability/availability/safety of MYRRHA Acc.y y y
‐ Guidance for designing the MYRRHA Accelerator.
SNS Linac Risk S t d lSpectrum model
M rrha Linac desi nMyrrha Linac design:Low energy section – Injector/Linac front end: Multicell cavities – Modularity & fault tolerance not
applicable Parallel Redundancy ‐ 2 parallel Injectors with fast switching
M(
Ser
Myrrha Linac Risk Spectrum model
Outcomes of the simulations:Outcomes of the simulations:Without/WithWithout/With Injector redundancy Injector redundancy ‐‐‐‐AvAv
totoMTBFs of MTBFs of diagnosticsdiagnostics‐‐reliability targetreliability target vvof compensationof compensation function reliability function reliability ‐‐‐‐ AvAv Superconducting partSuperconducting part‐‐ assuming larger assuming larger componentscomponents ((better comps. Reliability)better comps. Reliability)‐‐‐‐ LinacLinac Fault FrequencyFault Frequency could evolve fromcould evolve fromthan 10/3mthsthan 10/3mths
MyrteMyrte WP2 WP2 –– Task 2.9: Linac4 Task 2.9: Linac4 ‐‐CERN & CERN & LinacLinac for for MyrrhaMyrrha –– reliability moreliability mo
Li l Li Linac4 to replace Linac2
complex (from 2020)
Availability‐critical (targy g
Reliability Run (RR) star
Development of commo
U i l RR f il Using relevant RR failur
CONCLU
HighHigh‐‐reliability for MYRRHA reliability for MYRRHA LinacLinac ‐‐ anticipated in the anticipated in the
CONCLU
gg yy ppdesigndesign of the machine.of the machine. Compensation (faultCompensation (fault‐‐tolerance)tolerance) ‐‐ solution to minimize the effect of RF/magnets solution to minimize the effect of RF/magnets failuresfailuresfailuresfailures
Double injector Double injector ‐‐ improving the overall reliabilityimproving the overall reliability (avoid trips caused by (avoid trips caused by components in the frontcomponents in the front‐‐end), assuming a highend), assuming a high‐‐reliable switching magnetreliable switching magnet
Parallel redundancyParallel redundancy for power supplies and controllersfor power supplies and controllers (and other components in the SCL and HEBT)
‐ Design for ReliabilityAgrupados Internacional (EAI), SPAIN
DE), Jan Uythoven (CERN) , Andrea Apollonio (CERN)
DUCTION
MYRTEMYRTE ‐‐ Research activities to demonstrate the feasibility of Research activities to demonstrate the feasibility of transmutation of hightransmutation of high‐‐level nuclear waste at industrial scale level nuclear waste at industrial scale transmutation of hightransmutation of high‐‐level nuclear waste at industrial scale level nuclear waste at industrial scale (MYRRHA (MYRRHA ‐‐ long term supporting research facility for Accelerator Driven long term supporting research facility for Accelerator Driven SpallationSpallationsystem (ADS)system (ADS)
MYRTE WP2MYRTE WP2–– continues MAX activities continues MAX activities aimed to demonstrate high reliability of aimed to demonstrate high reliability of g yg yMyrrhaMyrrha Linac is achievableLinac is achievable
MODELLING RESULTS
SNS Reliability Analysis Accelerator downtime t ib ti (b t )SNS Reliability AnalysisMost affected SNS Linac parts/systems :
SCL systems ( )
Accelerator trip failures frequency (by system)
contribution (by system)
Front‐End systems (IS, LEBT, MEBT) Diagnostics & Controls
SCL RF system SCL Power Supplies and PS Controllers
RF System failures (no. &
SNS RS Model results
RF System failures (no. & duration‐hours)
SNS RS Model results‐ in line with SNS Logbook data statistics: RF system and electrical failures ‐most frequent Electrical systems failures ‐ most contributing to accelerator downtime
Medium and High energy section – Independently‐phased superconducting section ‐Highly modular (individual, independently controlled accelerating cavities). rial redundancy ‐ strong tolerance to faults.
vailability from 70% vailability from 70% o 75%o 75%value + value + target value target value vailability to 80%.vailability to 80%.r MTBF for r MTBF for Availability to 97%.Availability to 97%.m m 100/3mths to less 100/3mths to less
odelling odelling
i CERN I j 2 in CERN Injector
get > 95%)g 95
rted in July 2017)
n input format
d f M h Lie data for Myrrha Linac
USIONS
MyrteMyrte WP2 WP2 –– Task 2.9 Next StepsTask 2.9 Next Steps
USIONS
AFT for LINAC4; Reliability Run data used to refine & validate the LINAC4 Reliability model
LINAC d li l i d i f M h Li hi hLINAC4 modeling conclusions recommendations for Myrrha Linac high‐reliability (1st phase: LINAC Injector + Accelerator up to 100 MeV)
[in consideration of previous recommendations from D4.4 (MAX) reliability p 4 4 ( ) yreport.]