Conveners
Session 2 - Shutdown Activities in 2005
- Gianluigi (Chairman) Arduini (AB/ABP)
- Elias (Scientific Secretary) Metral (AB/ABP)
POOLE John
(CERN)
13/01/2005, 14:00
Shutdown Activities in 2005
Equipment groups have been asked to propose activities to consolidate their hardware
and for each system concerned, a risk analysis has been made and the impact of
failures has been evaluated. The method used for the analysis will be explained, a
prioritised list of activities will be presented and those which are planned to be
carried out will be indicated.
Roberto Saban
(CERN)
13/01/2005, 14:20
Shutdown Activities in 2005
Following a request by the DG, early last year, the TS Department made an analysis
of the risks associated to the construction and operation of the LHC. It focused on
the infrastructures under the responsibility of the Department and singled out a
number of items which, if not consolidated, would seriously jeopardize CERN’s
ability to complete the LHC project in time. This exercise led...
Mr
Thomas Zickler
(CERN)
13/01/2005, 14:40
Shutdown Activities in 2005
The PS main magnet renovation program comprises two phases in which all PS main
magnet units will be refurbished. Phase 1 will take place during the long PS shut
down in 2005 and foresees the renovation of 40 magnets. The actual state of all
magnets has been evaluated and analyzed in order to identify the weakest magnets.
These magnets will be removed from the PS tunnel, completely...
Dr
Uli RAICH
(CERN)
13/01/2005, 15:00
Shutdown Activities in 2005
It is during startup and commissioning of new features in the accelerator that beam
instrumentation is mostly needed and it is also during these periods that most of
the instrumentation problems crop up. In this talk we will analyze problems that
have occurred during the 2004 startup, and try to find reasons for failures and ways
to improve in the future. The situation of the PS and...
Roberto Losito
(AB-ATB)
13/01/2005, 15:40
Shutdown Activities in 2005
During the last two years of operation the PS internal dumps and the PSB sieve
showed a significant diminution in reliability. The availability of one PS dump and
of an operational spare is the prerequisite for some modes of operation (e.g. nTOF
in parasitic mode of East hall). The PSB sieve is absolutely required for the
production of the pilot LHC beam. In the SPS the high energy...
Mr
Jan Borburgh
(CERN)
13/01/2005, 16:00
Shutdown Activities in 2005
Recent septa failures will be briefly reviewed, along with a discussion of the
spares policy, the role of preventative maintenance and the reformulated
consolidation proposal. The importance of passive septa protection devices and well-
thought interlocks will be highlighted. The impact from planned or possible future
modes of operation will be discussed.
Dr
Enrique Gaxiola
(CERN)
13/01/2005, 16:20
Shutdown Activities in 2005
After modification in the 2003/2004 shutdown the overall injection kicker rise time
was quantified more precisely. The improvements for four-batch LHC type beam
injection have not yet been fully reproducible. The present status will be presented
and possible further improvements be discussed. An overview of the extraction kicker
modifications made to meet the LHC and CNGS requirements...
Dr
Mats Lindroos
(CERN)
13/01/2005, 16:40
Shutdown Activities in 2005
The ISOLDE REX post accelerator is now fully operational. The top energy of the
linac is 3 MeV/U and so far more than 25 isotopes of 12 elements have been cooled,
bunched, charge bred and accelerated with the system.
The REX system is since 1 January 2004 under the responsibility of the AB
department. For an interim period of 3 years the associated cost, both manpower and
material,...
Mr
Tommy Eriksson
(CERN AB/OP/AD)
13/01/2005, 17:00
Shutdown Activities in 2005
From 2006, the AD will enter a second period of running with improved apparatus and
new physics programs at the ATRAP, ATHENA, ASACUSA and ACE collaborations. The
required consolidation for a successful restart of the AD in 2006 will be reviewed.
Improvements in beam characteristics stability and experiment switching delays will
also be discussed.
