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Please use CTRL + C to copy this URLDetailed timetable
Hardware Commissioning Daychaired by Rüdiger Schmidt, Roger Bailey
Thursday, 19 March 2009 from to (Europe/Zurich)
at CERN ( AT Auditorium )
at CERN ( AT Auditorium )
Forum for discussion to improve strategies and safety of the 2009 superconducting circuits commissioning campaign
Go to day
08:30 - 09:55
Session 1: General Overview
Convener: Rüdiger SCHMIDT
Scenario for commissioning of the powering system
•Scenarios: commissioning to 450 GeV and 4…5 TeV, high currents only to 4TeV initially •How to decide to go to 5 TeV? •What about circuits with “small” current? 4 TeV- 5 TeV? •Key dates in preparation and outlook to planning •LHC operation during the winter 2009/10
Speaker: Rüdiger Schmidt Material: Slides
Consolidation and major changes that have impact on the powering circuits
•Overview: what changed during the shut-down? Modification to the powering system? •Impact of sector 34 repair on ELQA, inductance tables, ….. •Parameters, ramp speed and acceleration •Update of installation of nQPS, UPS •Other modification: DN200, others
Speaker: Reyes Alemany Fernandez Material: Slides
Powering Test Overview
•Organisation of hardware commissioning, meetings, … •What happens before powering tests after cooldown •Commissioning of Warm sectors, Cold sectors and sector 34: what needs to be done? What can be dropped? •When should we work: 2 shifts during 5 days versus 3 shifts during 7 days, MPP analysis, what can be done in a nightshift – WE? Bottlenecks in manpower •Rules for patrols during powering tests
Speaker: Boris Bellesia Material: Slides
- 08:30 Scenario for commissioning of the powering system 25'
09:55 - 11:30
Session 2: Safety and access
Convener: Roberto SABAN
First Outcomes of the Safety Task Force (the RULES)
•Tunnel access during powering – what areas can be accessed during powering as a function of current / energy in the different circuits? Clear and transparent rules •Matrix between powering and access (where not to go when?) •Document to be provided
Speaker: Ralf Trant Material: Slides
- 10:15 COFFEE break 20'
How to ensure safety during powering? (ENFORCING the RULES)
•Powering phase I at low current: How to ensure that the current does not exceed the “safe” value? •Powering phase II: How can we be sure that nobody is in when we power? •Underground access during powering phase I and II for interventions: How to ensure that we do not power a circuit during such intervention (such as with the PIC)? •Underground access during commissioning of the powering system? Is it required? (EE switches, cut water, triplet…) •Hardware commissioning using the access system •Set the rules for access, different modes, transition from shutdown to commissioning/operation
Speaker: Matteo SOLFAROLI Material: Slides
Safety issues related to commissioning and operation of the powering system
•Changes in safety procedures (ADI, …)? •Recall consignation •Who does it? Gerard Pastor for commissioning? Interventions during night and weekend? •Setting hardware limits for the current of power converters during powering •Tests of UPS – working as expected?
Speaker: Hugues Thiesen Material: Slides
- 09:55 First Outcomes of the Safety Task Force (the RULES) 20'
11:30 - 12:00
Session 3a: Cryogenics, DFBs and current leads
Convener: Gianluigi ARDUINI
Cryo Performance & Operation
•Cryogenic calorimetric measurements: view for 2009, automation? Can we increase the accuracy? •Operation overnight and over the weekend: any constraints? Presence of operators and experts in the CCC? •Consolidation: impact on re-commissioning and operation (DSLC, stand alone magnets, inner triplets, Y-lines, …)
Speaker: Serge CLAUDET Material: Slides
- 11:30 Cryo Performance & Operation 30'
12:00 - 15:25
Session 3b: Powering, Power Converters, QPS&EnergyExtraction
Convener: Gianluigi ARDUINI
•What is new? •What needs to be repeated? Warm sectors, cold sectors, sector 34? •ELQA for 5 TeV: problems to go to 1.9 kV? Better to reduce the tests to 1.6 kV? •Monitoring during cool-down, what circuits, what sectors in parallel? •HV tests in case of late symmetric Q-detector installation? To be discussed with QPS experts. •Planning ELQA: One sector at the time? Stand alone first, arc later?
Speaker: Nuria Catalan Lasheras Material: Slides
- 12:30 LUNCH break 1h30'
Exceptional conditions during powering tests – the rules
•Can we force signals to provide CryoStart and CryoMaintain – when is it permitted? How to ensure that no equipment will be at risk? •Can we mask CryoStart and CryoMaintain? Under what conditions? How to ensure that no equipment will be at risk? •When to block / unblock circuits? •What are the rules? Notification, approval, who is authorised to do it, ….. •How to document such exceptional conditions?
Speaker: Laurette Ponce Material: Slides
Quench Protection and Energy Extraction System
•nQPS, impact – how to commission it? IST and powering tests •new software: QPS snapshots, splice resistance measurements •impact of upgraded UPS on QPS commissioning •anything new on old QPS?
Speaker: Knud Dahlerup-Petersen Material: Slides
How does it look altogether
•When can we start? •How long will it take? •Before nQPS: early measurements of bad splices with Cryogenic calorimetric measurements in sector 23 and 45 – when and how? •How long from 4 TeV to 5 TeV? How many steps to be done? Impact on commissioning?
Speaker: Antonio Vergara Fernandez Material: Slides
- 12:00 ELQA 30'
15:25 - 17:10
Session 4: Powering tests and procedures
Convener: Andrzej SIEMKO
How to deal with non-conformities
•List of non-conformities •How to solve them? Actions underway? •How do we track them? •Implication of non-conformities? Something that stops us to run at 4/5 TeV?
Speaker: Mirko Pojer Material: Slides
- 15:55 COFFEE break 20'
How to detect bad splices?
•Bad splices in magnets and interconnects •What methods, what accuracy? •What is a “bad” splice? Repair is required if the resistance is larger than… for 450 GeV, 4 TeV and 5 TeV. To be defined before the start of tests •Procedures for other circuits
Speaker: Mike Koratzinos Material: Slides
Status of procedures for powering
•Procedures for main dipole and quadrupole circuits – what changes? •Procedures for other circuits •Where are we with the procedures? •Impact on software (sequences, …)
Speaker: Walter Venturini Delsolaro Material: Slides
- 15:25 How to deal with non-conformities 30'
17:10 - 17:40
Convener: Roger BAILEY
Summary and discussions
Speaker: Roger Bailey
- 17:10 Summary and discussions 30'
- 08:30 - 09:55 Session 1: General Overview