nMPP kickoff meeting

Tuesday 17 Feb 2009, 09:00 → 10:30 Europe/Zurich

1/1-025 (CERN)

Rudiger Schmidt (CERN)

Slides

• MPP-meeting20090217.pdf
• MPP-meeting20090217.ppt
• MPP-meeting2009_procedures.pdf
• MPP-meeting2009_procedures.pptx

text

• procedures.docx
• procedures.pdf
• table.docx
• table.pdf

Rudiger presented a proposal to revive the old MPP and introduced the first urgent task which is the review of all the powering procedures (see slides) Mirko showed a proposal for the new procedures taking into account the history of each sector (see slides) Matteo reviewed the status of the existing procedures in EDMS (see slides) DISCUSSIONS It was noted that procedures exist, at different stages of advancement, for ELQA, QPS IST, and Cryogenics. These need to be finalized as they constitute interfaces to the powering procedures (for example the outcome of ELQA tests gives entry conditions for powering procedures). The DFB commissioning is another activity that needs to be carefully detailed. Apparently a document exists (Mirko) On top of that, the new QPS will need commissioning and therefore procedures. Knud and Bob are already working on this subject. Roberto noted that making sure that all the equipment owners document their tests is the job of the HCC. There will be an Hardware Commissioning day on the 19th March. By then the work on procedures will have to be well advanced. Roberto suggested to have an independent person to think on what might have been overlooked. Andrzej expressed the concern on the availability of tools to carry out the new tests. Roberto answered that more important than tools is thinking what tests are useful and documenting them. There was a discussion on the "splice resistance monitor" tool that is under developement (Bob is in charge of coordination with Adriaan R. team). Bob clarified that this software is downstream the logging system and will provide a "real time" overview of the splice resistances in the CCC. Eugenia noted that the flow of data needs further discussion. Roberto announced a review on the software where all these issues will be discussed. This will include PM tools. The status will be presented at the HWC day in March. Mike Koratzinos informed that a tool was provided by the LSA team to treat calorimetric data. Arjan noted that electrical measurements of splices are much more accurate and questioned the usefulness of continuing with calorimetry. Rob answered that this is true for the RB and RQF/D circuits, but for the other circuits calorimetry is still useful. Knud reminded that the hardware for the new QPS will only be available in June. Nuria asked whether there are clear criteria for the splices: is 20 nOhm ok? Andrzej answered that we have Arjan simulations. Walter reminded that these are not benchmarked by experiments. Mirko's proposal to introduce 4 labels on procedure steps (after shutdown, warmed up, modified, repaired) was discussed. It is consideded adequate to start with, but it is likely that it can be simplified at a later stage. Andrzej suggested to re discuss the best format for the powering procedure in view of 2008 commissioning experience. Andrzej stated that the highest temperature warm up at which the ELQA is still valid was defined and documented within the old EEWG. Today different numbers (80 K, 120 K) are circulating (also due to the PIM issue). (outside the meeting: Nuria will present the present strategy for ELQA concerning warm up temperatures at one of the next meetings) Matteo showed the existing edms documents, with a few inconsistencies and asked how to go ahead for the new versions. Roberto reminded that it is up to the editor to decide whether a new version should go again through the whole edms approval route or it can skip some of the steps. In some cases, for small changes, the editor may decide to release directly the new version. Walter remarked that each document should go through the whole approval route at least once. It is agreed that, as last year, each procedure will be steered by an author who will gather the contributions of the different experts. The table of authors is in annex. Roberto reminded that Catherine Bieri is no longer in charge of the edms node for the procedures. The new responsible is S. Chemli, and E. Chrochet will probably take over this job. Matteo will follow up this from our side. Rob expressed the need of a better information flow concerning procedures. MPP members should be timely informed and receive drafts at early stages, otherwhise there is a risk that procedures remain unknown to some of the experts. Walter suggested to revise the "engineering check lists" to make sure they include all who can make a contribution, which was not always the case in the past. Nuria suggested to have a larger list of people who are informed but don't need to give their approval. Alick inquired on the link with the Safety Commission, who is supposed to deliver new access rules during powering. Rudiger said that the work on powering procedures is not directly dependent on the outcome of the SC work, however he is present in both MPP and SC and can provide such a link.