Minutes
from REX integration meeting
Present:
1. REXTRAP status
* The trap has been
delivering K+ beam to the WITCH experiment at 30 kV.
* Test at 60 kV
operation voltage have been carried out. Severe external sparking in the ion source in spite of extra
cleaning. Due to the sparking a Stanford Generator and the oven heating
supply are broken. Further HV tests of the source foreseen this week.
* An upgrade to
faster computers at the trap is under consideration.
2. REXEBIS
* A new date for the
alignment of the inner structure has been given; end of first week of March.
* Some parts for the
baking equipment have arrived. The system could maybe be installed by the first
week in March.
* The purchase of a
collector supply has been launched after some initial trouble at the purchasing
office. A 6 kV, 1 A supply from Spellman.
* The problems with
changing the ISOLDE database have been resolved.
* R. Becker in
* A summer student
for electron beam simulations has been granted.
3. Linac
*
The new drift tubes are installed. Adjusted according to the
calculations.
*
The production of the beam diagnostics boxes continues. Pier-Amory had to give
away the drilling job to the main workshop, which means an extra 1000 CHF in
cost for the boxes. A cost summary (consumed salary and future jobs) for
Pier-Amory should be given at next REX meeting.
4. Misc
* Friedhelm has finished a
longer article on the cooling in the REXTRAP. Distributed to the co-authors for
the moment. To be published in NIM.
* Fredrik has finished his contribution to the
REX-ISOLDE Yellow report.
* The test schedule was not discussed as the key
persons (Luis and Peter) for this were absent.
* It was concluded that a schedule for the startup and
the off-line tests can not be given for the moment. The
reason being the unforeseen complications with the control system, HV sparking,
alignment issues, and the limited support given.
Notes by Fredrik Wenander