Abstracts Brochure - CERN

THPCH — Poster Session 29-Jun-06 16:00 - 18:00
Handling and Transport of Oversized Accelerator Components and Physics Detectors
For cost, planning and organisational reasons,
it is often decided to install large pre- S. Prodon, C. Bertone, M. Guinchard, P. Minginette (CERN)
built accelerators components and physics
detectors. As a result, on surface, exceptional transports are required from the construction to the installation sites.
Such heavy transports have been numerous during the LHC installation phase. This paper will describe the different
types of transport techniques used to fit the particularities of accelerators and detectors components (weight, height,
acceleration, planarity) as well as the measurement techniques for monitoring and the logistical aspects (organisation
with the police, obstacles on the roads, etc). As far as oversized equipment is concerned, the lowering into the pit is
challenging, as well as the transport in tunnel galleries in a very scare space and without handling means attached
to the structure like overhead travelling cranes. From the PS accelerator to the LHC, handling systems have been
developed at CERN to fit with these particular working conditions. This paper will expose the operating conditions
of the main transport equipments used at CERN in PS, SPS and LHC tunnels.
Planning and Logistics Issues Raised by the Individual System Tests during the Installation
of the LHC
The running of individual system tests has to
fit within tight constraints of the LHC instal- S. Weisz, E. Barbero-Soto, K. Foraz (CERN)
lation planning and of CERN’s accelerator
activity in general. For instance, the short circuit tests of the power converters that are performed in situ restrict
the possibility to work in neighbouring areas; much in the same way, the cold tests of the cryogenic distribution
line involve safety access restrictions that are not compatible with the transport and installation of cryo-magnets or
interconnect activities in the sector considered. Still, these individual system tests correspond to milestones that are
required to ensure that we can continue with the installation of machine elements. This paper reviews the conditions
required to perform the individual system tests and describe how the general LHC installation planning is organised
to allocate periods for these tests.
Magnetic Field Measurement and Fine-tuning of Kickers
To facilitate the operation of top-up mode injection,
the National Synchrotron Radiation T.-C. Fan, C.-S. Fann, C.-S. Hwang, F.-Y. Lin (NSRRC)
Research Center (NSRRC) has upgraded the
kicker systems in the injection section of the storage ring. The new kickers have been carefully tested and installed.
The magnetic field measurement system is improved, and the horizontal field is also clarified. The method of tuning
on the current wave form has been systematically studied.
Analysis and Reduction Electromagnetic Interference to ICTs Caused by Pulsed Power
Supply Excitation in NSRRC
The purpose of this paper is to eliminate
the Electromagnetic Interference (EMI) from
Y.-H. Liu, J.-C. Chang, J.-R. Chen, Y.-C. Lin (NSRRC)
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