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Operation report:

Laurette gave an oral report on the last week operation of AD+ELENA machines.

After record intensities measured during the last weeks, an issue with the AD e-cooler filament has caused instabilities in beam position and orbit drifts, causing bad transfer from AD to ELENA, and large beam intensity fluctuations. Origin of the problem seems to be degraded conductivity of cooling water. After some fixing, the stability has improved, although not optimal yet. Hope that the situation can stay stable till the end of the run on Monday 2nd dec. Also the BCCCA is no more operational due to loss of cryo conditions (vacuum leak).

 

Fine tuning of the YETS planning:

Francois showed all the various steps of the YETS activities. A number of adjustments were discussed, but in overall, the sequence is OK. The planning modified available at

https://oss-coordination.web.cern.ch/gantt/latest?facilities=AD/ELENA&scale=week&worktypeproject=

reflects the modifs agreed.

More discussions are needed with EN-EL (M. Lonjon) to understand the impact of  LV switchboards works.

 

AD target YETS activities

Sven showed a summary slide od the AD target anticipated works. Some inconsistencies were noted with the general planning that will be fixed. A new version will be made available soon.

 

AOB:

-David indicated that a follow-up of the March 2023 AD mini workshop will be organized towards in Q1 2025, focussing on the consolidation needed on AD/ELENA components to keep the machines in optimal conditions till LS4. All instrument groups will be required to cover their proposals/requests for consolidation so that a consistent program can be proposed to the management. Laurette will put together a list of the issues encountered during 2024 run, that will be useful to this purpose. See https://cernbox.cern.ch/s/oov3G7W1Bmm6bvH

-Francois indicated that the next ADTC meeting to be held on 12th December will focus on experiments YETS activities. All experiments will be asked to present their program, with emphasis on the services requirements. An invitation will be sent soon.

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