1. Technical and experiment news:
· The GPS run with Ta W target at MINIBALL on transfer reactions on11Be was very successful.
· The measurements on MINIBALL have been interrupted twice. In the first case a tube broke in the REX-linac amplifier. In the second, the proton beam had to be stopped due to a problem with the ventilation system in the target area (which was noticed on the radiation monitors). Proper measures have been taken in both cases.
· COLLAPS took over the beam from the Ta target at GPS during the weekend for studying the conditions for measuring the charge radius of 12Be. During routine release measurements it was discovered that the pulsing mode of the high voltage at GPS does not work. Followed an intervention on Monday which determined the problem. Many thanks to the specialists for their swift response.
· A software problem with the proton-intensity watch dog was fixed after the introduction of a digital watchdog. Before the fix it produced false alarm when the proton beam was used simultaneously at both separators (staggered beam on GPS and normal beam on HRS). The booster team tested the watchdog on Tuesday and Wednesday.
· The main RF amplifier of ISCOOL has been repaired and put in place. The spare unit which provides smaller amplitudes has been taken out.
· For the needs of studying 44Ar HRS has been setup in a higher-resolution mode. Resolving power of about 2200 has been achieved at 30kV, which may just be enough to reduce well enough the isobaric contamination from CO2.
2. A.O.B:
· Currently it is not clear if the accelerator complex of CERN will be shut down in 2012 or later, due to competition from the Fermi lab. Irrespective of this, proposals will be accepted during the INTC meeting in Feb 2011.
· A reminder from the running experiments: please clean immediately after yourself in the ISOLDE kitchen
· Metal and plastic pieces for machining are now available between the mechanical workshop and the kitchen barrack. The broken drilling machine support will be repaired as soon as the ordered piece arrives at CERN. In the meantime ask whether you can use the ISOLDE workshop (bldg 3, ground floor).
· Kathrin Wimmer (TU München) presented “Studying the island of inversion with transfer reaction at REX-ISOLDE”.
Minutes by DTY