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LIU-SPS Coordination Meeting

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865/1-D17 (CERN)

865/1-D17

CERN

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Present:

E. Veyrunes, I. Karpov, F. Follin, A. Rey, L. Jensen, H. Bartosik, G. Papotti, E. Carlier, C. Pasquino, F. Velotti, K. Li, V. Kain, E. Shaposhnikova,  A. Butterworth, D. Mcfarlane, B. Goddard, T. Argyropoulos, I. Ramirez, L. De Oliveira, C. Pasquino

Matters arising and actions:

  • ISTs during weeks 34 and 35 is still under discussion --> Etienne is in contact with David. This planing should be finalized soon - once that is clarified we need to response on the phases of the final dump assembly so that this can be finalized.
  • ALPS test had to be moved to BA6 as there is not power in BA3 during this week - to be taken into consideration in the future.

 

Agenda:

  • News on dry-run and test progress (K. Li)
    • FESA classes for FGCs - to be checked; in simulation mode we can have a test; should arrive around 15 February
    • ALPS has already been well tested by Stephane in BA3
    • ALPS interlocks needs to be checked early together with Yannick!

 

  • RF frequency programs and frequency distribution during slip stacking (T. Argyropoulos)
    • For FFA all frequencies can be distributed and it is up to the client to decide what frequency they want to see.
    • All RF frequency programs are distributed also during slip stacking; again, it is the client that is free to decide what frequency program is to be used.
    • Verena commented that the BST needs to choose one frequency as synchronous; this needs to be done at the start of the cycle. (ACTION: To be checked early next week - Giulia to check with RF on possibilities and then schedule a meeting; Etienne also remarked that the TSU would need to work correctly with the frequency swings. Verena said it would be good to then come up with a list of which clients would use which frequency.)
 
  • Impact of name changes of FGCs (S Cettour Cave)
    • Stephane showed the name PC changes
    • The name changes should be simple to implement both for imported as well as for the virtual parameters
    • Verena asked about generation or makreules using logicals - this always works via ID so there is no problem here
    • Loic stressed that the name changes should be done soon and complete the table; Stephane will check with David Nisbeth (ACTION: Stephane to forward the tables and get in touch with David)

 

  • SIS: Exporter from TT10 BIC (E. Veyrunes)
    • External condition should inhibit the injection kicker from pulsing - Verena asked whether it is okay that the injection kickers keep pulsing; there was a small discussion for reasons to turn of kicker pulsing. It was decided to use AllUserPermitted in the SIS - it can still be modified or masked, or changed in case there is an issue. In any case the MDSH will not pulse.
    • An MKP enable input has been added; this will be on the master BIC close to the PS; this also gives operational flexibility as it is not done via timing
    • Ivan mentioned that there is already an input; in this case however the MDSH would be going as well, so it can not be done like this --> Brennan asked this to be put down in a could of pages that can be summarize with explanation and all use cases which can then be circulated (ACTION: Verena, Eric compile a small summary with use cases and circulate this)

 

  • A proposal for improving the MDSH.11971 interlocking (I. Ramirez)
    • Ivan reminded about the new SPS injection interlock system
    • Ivan made a porposal oj the ay the MDSH interlock circuit is done: a WIC on MDSH will not have an impact on the beam; instead, the MDSH powering interlock can be moved from the Ring-WIC to the TT10-WIC
    • Ivan asked about how to manage extractions - this would also need to be discussed in detail; there are several options; Brennan again stressed, that this should become part of the above mentioned document.
    • If the proposal is accepted, there would need to be some changes to be implemented.
    • There are no modification on the power converter side. The proposal was accepted - Verena asked to go on with the modification.

 

  • Status of SPS beam line activities (A. Grande Mallavia)
    • Some delay has been accumulated; Antonio is searching for way to catch up with the delay.
    • Vacuum has been delayed as the cabling it not yet entirely finished. A machine is considered closed when it is pumped.
    • Brennan asked whether the question on the drains has an impact - Etienne said that they will still need to decide what to do with the drains; this need to be followed up (ACTION: Etienne to decide what to do with the broken drains)
    • Brennan asked Lars to check on the WS issues (ACTION: Lars to investigate problems with WS, detail or major?)
    • Antonio's list comprises only what had been refurbished and needs tests before being installed.

 

  • Round table:
    • Brennan asked for a couple of slides on status of the layout database for next week
    • Etienne: details of planning changes? For Etienne still to early before dat from EN-STI

 

  • AOB:
 
  • Next meeting:
    • Dry run digest
    • Listing RF completeness further
    • IST checklists
    • How do clients deal with slip stacking?
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