Title :
The Bending Magnets for the Proton Transfer Line ofCNGS
Author :
Schirm, K.M. ; Kalbreier, W. ; Anashin, V. ; Kiselev, O. ; Maraev, V. ; Ogurtsov, A. ; Pupkov, Yu. ; Ruvinsky, E. ; Zhilyaev, K. ; Konstantinov, Yu. ; Kosjakin, M. ; Peregud, V.
Author_Institution :
CERN, Geneva
fDate :
6/1/2006 12:00:00 AM
Abstract :
The project "CERN neutrinos to Gran Sasso (CNGS)", a collaboration between CERN and the INFN (Gran Sasso Laboratory) in Italy, will study neutrino oscillations in a long base-line experiment. High-energy protons will be extracted from the CERN SPS accelerator, transported through a 727 m long transfer line and focused onto a graphite target to produce a beam of pions and kaons and subsequently neutrinos. The transfer line requires a total of 78 dipole magnets. They were produced in the framework of an in-kind contribution of Germany via DESY to the CNGS project. The normal conducting dipoles, built from laminated steel cores and copper coils, have a core length of 6.3 m, a 37 mm gap height and a nominal field range of 1.38 T-1.91T at a maximum current of 4950 A. The magnet design was a collaboration between CERN and BINP. The half-core production was subcontracted to EFREMOV Institute; the coil fabrication, magnet assembly and the field measurements were concluded at BINP in June 2004. The main design issues and results of the acceptance tests, including mechanical, electrical and magnetic field measurements, are discussed
Keywords :
accelerator magnets; neutrino oscillations; particle beam extraction; particle beam focusing; proton accelerators; proton beams; storage rings; synchrotrons; BINP; CERN SPS accelerator; CERN neutrinos to Gran Sasso; CNGS; DESY; EFREMOV Institute; INFN; bending magnets; coil fabrication; copper coils; dipole magnets; electrical field measurements; focusing; graphite target; half-core production; high-energy proton extraction; kaon beam production; laminated steel cores; magnet assembly; magnet design; magnetic field measurements; mechanical field measurements; neutrino oscillations; normal conducting dipoles; normal conducting magnet; pion beam production; proton transfer line; Coils; Collaboration; Laboratories; Magnetic cores; Magnetic field measurement; Magnets; Mesons; Neutrino sources; Particle beams; Proton accelerators; CNGS; dipole; normal conducting magnet; transfer line;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2006.871243