Abstracts Brochure - CERN

WEPLS080
WEPLS081
WEPLS082
WEPLS083
28-Jun-06 16:00 - 18:00 WEPLS — Poster Session
Magnets for the Storage Ring ALBA
The Storage Ring ALBA is a 3.0 GeV syn-
M. Pont (ALBA) E. Boter, M.L. Lopes (CELLS)
chrotron light source under construction in
Barcelona (Spain). The Storage Ring, has a
circumference of 268.8 m and comprises 32 combined magnets, 112 quadrupoles, and 120 sextupoles. This paper
will describe the design and the present state of these magnets. The combined magnet has a central field of 1.42 T
and a large gradient of 5.65 T/m, since most of the vertical focusing happens at these combined magnets. The 112
quadrupoles have been designed for a maximum gradient of 22 T/m. The bore diameter will be 61 mm and the
lengths range from 200 to 500 mm. Each quadrupole will be individually powered. The 120 sextupoles are divided in
9 families. There are two lengths of sextupoles 150 and 220 mm and the maximum sextupole gradient is 600 T/m2.
The bore diameter is 76 mm. The sextupole magnets will also be equipped with additional coils for vertical steering,
horizontal steering and quadrupolar skew correction.
Modifications to the SPS LSS6 Septa for LHC and the SPS Septa Diluters
The Large Hadron Collider required the
J. Borburgh, B. Balhan, B. Goddard, Y. Kadi (CERN)
modification of the existing extraction channel
in the long straight section (LSS) 6 of the
CERN Super Proton Synchrotron (SPS), including the suppression of the electrostatic wire septa. The newly set up
fast extraction will be used to transfer protons at 450 GeV/c as well as ions via the 2.9 km long transfer line TI 2 to
Ring 1 of the LHC. The girder of the existing SPS DC septa was modified to accommodate a new septum protection
element. Changes were also applied to the septum diluter in the fast extraction channel in SPS LSS4, leading to the
other LHC ring and the CNGS facility. The requirements and the layout of the new LSS6 extraction channel will be
described including a discussion of the design and performance of the installed septum diluters.
The Septa for LEIR Extraction and PS Injection
The Low Energy Ion Ring (LEIR) is part of the
J. Borburgh, M. Hourican, T. Masson, A. Prost (CERN)
CERN LHC injector chain for ions. The LEIR
extraction uses a pulsed magnetic septum,
clamped around a metallic vacuum chamber. Apart from separating the ultra high vacuum in the LEIR ring from the
less good vacuum in the transfer line to the PS this chamber also serves as magnetic screen and retains the septum
conductor in place. The PS ion injection septum consists of a pulsed laminated magnet under vacuum, featuring a
single-turn water cooled coil and a remote positioning system. The design, the construction and the commissioning
of both septa are described.
Consolidation of the 45-year-old CERN PS Main Magnet System
After a major coil insulation breakdown on
Th. Zickler, D. Bodart, W. Kalbreier, A. Newborough (CERN) two of the 45-year-old CERN PS main magnets
in 2003, an extensive magnet consolidation
program has been launched. This article reviews the analysis of the magnet state before the repair and the applied
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