Participants: Fanouria Antoniou, Miroslav Georgiev Atanasov, Thomas William Birtwistle, Jean-Baptiste Bonnamy, James Devine, Gian Piero Di Giovanni, Eve Fortescue-Beck, Matthias Haase, David Hay, Bettina Mikulec, Gabor Petrika, Serge Pittet, Andrea Santamaria Garcia.

Approval of minutes

The minutes of the LIU-PSB WG #224 meeting will be approved in the next meeting.

Communications

General

• The LIU event will be held from the 13^th to the 15^th of February 2018. It will last two nights and will take place in Montreux.
• S. Prodon will extract all the LIU EVM data on Thursday 8^th of November 2018 for the written document that will be presented by F. Bordry to the Council, which will also contain an explanation of the EVM variances. Please make sure that your EVM reporting is up to date.

LIU-PT Meeting

• J. Coupard presented the latest schedule for the Linac4 and Linac4-to-PSB connection.
• The current Linac4 RR has been extended by one week, to include week 49.
• The ISTs and Open Days have been explicitly included in the schedule.
• A proposal has been made to stagger the HW commissioning phase so that the HW commissioning will be conducted first in the area up to 3 MeV and then in the rest of Linac4. In this way, the first beam tests up to 3 MeV can be run during this time.
• B. Mikulec presented the detailed, day-by-day planning for the LBE run in 2019.
• Out of the 11 weeks of beam commissioning, 3 weeks are needed for re-commissioning the Linac4, 0.5 weeks for the wrap-up, and 7.5 weeks correspond to previously non-testable/adjustable features.

LIU Beam Performance Meeting

• The last meeting was dedicated to the review of the outcome of the source review and the SPS high-intensity machine studies.

Open Actions

I. Efthymiopoulos (2018-11-06): Make a list of starting points of the transfer lines to be sent for approval in an EDMS document.

• The EDMS document is circulating. Action closed.

WPA and PSB master schedule (D. Hay)

• D. Hay previously presented the concept of Work Package Analysis (WPA), in the LIU-PSB WG meeting #216.
• The Individual System Tests (IST) period has been included in the schedule, before the hardware commissioning.
• The planning can be accessed online through the link provided in the presentation (slide 5), but access to the license needs to be requested and can take up to three weeks.
• The EN-EL de-cabling and cabling campaigns are the main schedule drivers since they will be working all over the machine and the co-activities with other groups need to be minimized. The campaigns have been scheduled with the requested contingency, with a total duration of 56 weeks (two more weeks than previously scheduled). This extension will make the activities last until 2020.
• The general commissioning will start in 2020. The long cabling campaign will push later in time the vacuum tests, which are not fully confirmed yet.
• As of today, the WPA for the injectors is almost complete and has proven useful.

Some details about the master schedule are presented below:

PSB machine opening and testing sequence

• Machine cooldown (6 weeks).
• Removal of RF equipment (42 days).
• Tests with POPs-B (17 days in December 2018).
• Kicker replacement (access of one day).
• Full electrical lock-out before the Christmas holidays.

BE-RF projects (M. Haase)

• The powering tests will be carried out towards the end of 2019.
• Cooling will be needed for the tests starting from mid-November 2019.

TE-ABT projects (W. Weterings)

• Ejection and injection: preparation, dismantling, and preparation for the insulation by TE-EPC
• Magnets, vacuum, and consolidation works (cooling and ventilation).

Comments

• G. P. Di Giovanni asked if the cables to be marked in purple are the ones to be kept or the ones to be disconnected. D. Hay answered that only the cables to be disconnected need to be marked.
• B. Mikulec commented that the extra week given to EN-EL might be a problem in terms of manpower since the operators will have other projects, although support by phone could be possible.
• B. Mikulec commented that there are some activities missing concerning the TE-ABT works during LS2, like the conditioning tests. This will be followed-up to make sure everything is there.
• B. Mikulec asked D. Hay if he has blocked two weeks for the Open Days. D. Hay answered that two weeks are included in the master schedule.
• M. G. Atanasov asked how to know when the planning changes. D. Hay answered that regular coordination meetings will be held to discuss any change in the planning.
• G. P. Di Giovanni asked how delays will be coordinated centrally. D. Hay answered that this will be done during the weekly coordination meeting.
• G. P. Di Giovanni asked if vacuum is the only group missing to confirm that the proposed schedule is fine. D. Hay answered that it is.
• J. A. Ferreira Somoza will be contacted concerning the vacuum schedule.

AOB

Update on the ECRs (T. Birtwistle)

Multiple groups

• Magnet modifications in BT, BTM and BTP (TE-MSC, Antony Newborough): integration issues to resolve with the support of quadrupoles in the BT line.
• The rest are released or approved.

TE-ABT

• Replace kicker BT.KFA10 (Luc Sermeus, Wim Weterings): approved, but the integration model needs to be updated.
• The rest are released or approved.

TE-MSC

• Upgrade of the BHZ Main unit bending magnets (Antony Newborough): under approval. Postponed by IEFC, confusion with the cabling for the main magnets.
• Damping resistors on PSB bending and quad magnets (Antony Newborough): released.

TE-EPC

• Upgrade of PS Booster Corrector and Quadrupole Power Supplies (Louis De Mallac): under approval (integration needed).
• Booster Power House (BHP) Converters Upgrade (Serge Pittet): under approval (integration needed).
• Installation of the power converters for BI.SMV10 magnets for LIU PSB injection (Jean-Marc Cravero): under approval (integration needed).
• Installation of new Power Converters for PSB injection Qstrip, Correctors, Quad. (Serge Pittet): under approval (integration needed).
• An estimated planning has been drafted.

BE-BI

• New BLMs Installation in the LT, LTB and BI Lines for H- exchange monitoring (Christos Zamantzas): needed.
• Upgrade and consolidation of BT.BTV20 (Stephane Burger): under approval.

BE-RF

• The New PS Booster RF System, Finemet Cavities (Mauro Paoluzzi): approved, but the integration model needs to be updated.

EN-STI

• Removal of 2 beam stoppers (BI.STPFA and BI.STPSW) on the BI line EN-STI (Edouard Grenier-Boley): approved, but the integration model needs to be updated.
• New PS Booster Absorber in Period 8 (Iñigo Lamas Garcia): under approval (new version needed following design changes). Early November.

EN-CV

• Consolidation of the Booster chilled water plant (Gabor Petrika): under preparation. Integration being finalised.
• Consolidation of the Booster cooling plant (Gabor Petrika): under preparation. Integration being finalised.
• Ready in a couple of weeks.

EN-ACE

• New LBE line plus infrastructure (Julie Coupard): under approval (integration).

Next LIU-PSB meeting: 4^th of December 2018 on Linac4-to-PSB LS2 schedule by Julie Coupard.