Minutes from REX meeting 2005-11-03

 

Present: Mats Lindroos (chair), Didier Voulot, Nikolai Trofimov, Nicolas David, Luis Fraile, Romain Savreux, Johannes Broere, Sylvestre Catin, Richard Scrivens and Fredrik Wenander

 

 

General

 

* Some money is remaining on this year’s budget. If things are needed they should be ordered quickly.

 

* In particular there is 7550 Euros left from Munich’s money. Invoices should have reached Munich by the end of November. Nicolas and Han will try to make good use of it.

 

* Li run went very well. 2.77MeV/u 9Li3+ have been delivered to the experiment at 50Hz repetition rate. Li2+ were accelerated and stripped to 3+ to avoid 18O4+ contamination.

 

* The setting up of HRS was delayed for a day in total causing time pressure for the rest of the REX tuning. 

 

* There was a general power failure this afternoon (3/11). Everything is now running again.

 

* There will be a power shutdown Sat 19/11.

 

* There is a general plan to separate the technical computer network from the general computer network. This could cause some problems since some of our control computers are running windows and windows computers should not have access to the technical network. Romain and Sylvestre will start to make a list of computers that need to access the technical network. Alternative solutions can be explored involving network “passerelle” (Nikolai). Meanwhile Mats will also have a discussion with the CO group as this will affect the whole of Isolde.

 

* Sven Önnerstad and Jari (external consultants) will under supervision of Joakim Cederkall start working on control applications for the console computers. The operation group will still provide two people to work on control application during the shutdown. Nikolai will coordinate the work.

 

* Work is in progress on the BDI applications. However still preliminary.

 

* Fredrik has passed around a list of task that should be done during the shutdown so people can complete and give feedback.

 

* Rex should be up and running again 1th of April so all work should be finished before this date. 

 

* Compressed air and water cooling will not be supported between 12/12/05 and 20/02/06 (no piquet). However it will still be possible to have air or water when a job requires it, except for one week maintenance (not defined yet) when air and water will be completely switched off.

 

* At next week’s Rex meeting the shutdown work will be discussed in detail with the involved groups.

 

* This year’s campaign has been very successful with 9 successes out of 10. Well done everybody!

 

 

 

TRAP and EBIS

 

* Romain and Fredrik have started doing a number of tests on trap and ebis.

 

 * Strong interest for molecular beams. Test will be carried out during shutdown.

 

 

 

LINAC

 

* The RF room air conditioning (air extractor fan) was malfunctioning causing a number of restart during run. This has now been fixed.

 

* Apart from a number of restarts (mostly caused by air cooling failures) there has been no problems with the RF amplifiers during this run! The 200MHz has been running stably at 80kW 50Hz 500us.

 

* The 200MHz power supply can now deliver nominal power. Remaining is the problem of the tube power supplies being subject to failures (for example in case of discharges). Johannes Broere will contact Mr. Berderman (Bertronix) to get him over to find a solution to this problem.

 

* Some work is planned on the vacuum system in section 5 and 6 after the bender. Users (Luis coordinates) are asked to clear the space so everything can be easily accessed.

 

 

 

Minutes taken by Didier Voulot