Keyword: magnet-design
Paper Title Other Keywords Page
TUOAC03 Status of a Single-Aperture 11 T Nb3Sn Demonstrator Dipole for LHC Upgrades dipole, collimation, status, lattice 1098
 
  • A.V. Zlobin, N. Andreev, G. Apollinari, E.Z. Barzi, R. Bossert, G. Chlachidze, V. Kashikhin, A. Nobrega, I. Novitski, D. Turrioni, R. Yamada
    Fermilab, Batavia, USA
  • B. Auchmann, M. Karppinen, L. Oberli, L. Rossi, D. Smekens
    CERN, Geneva, Switzerland
  
  Funding: Work is supported by Fermi Research Alliance, LLC, under contract No. DE-AC02-07CH11359 with the U.S. Department of Energy
The planned upgrade of the LHC collimation system includes two additional collimators to be installed in the dispersion suppressor areas of points 2, 3 and 7. The necessary longitudinal space for the collimators could be provided by replacing some 8.33 T NbTi LHC main dipoles with 11 T dipoles based on Nb3Sn superconductor and compatible with the LHC lattice and main systems. To demonstrate t his possibility Fermilab and CERN have started in 2011 a joint R&D program with the goal of building by 2014 a 5.5-m long twin-aperture dipole prototype suitable for installation in the LHC. The first step of this program is the development of a 2-m long single-aperture demonstration dipole with the nominal field of 11 T at the LHC nominal current of ~11.85 kA and 60 mm bore with ~20% margin. This paper describes the design, construction and test results of the single-aperture Nb3Sn demonstrator model for the LHC collimation system upgrade. 		 
slides icon Slides TUOAC03 [5.812 MB]  
 
WEPPD081 Optimization of AC Dipole Parameters for the Mu2e Extinction System dipole, proton, emittance, electron 2714
 
  • E. Prebys
    Fermilab, Batavia, USA
  
  The Mu2e experiment is being planned at Fermilab to measure the rate for muons to convert to electrons in the field of an atomic nucleus with unprecedented precision. This experiment uses an 8 GeV primary proton beam consisting of short (~200 nsec FW) bunches, separated by 1.7 μs. It is vital that out-of-bunch beam be suppressed at the level of 10-10 or less. This poster describes the parametric analysis which was done to determine the optimum harmonics and magnet specifications for this system, as well as the implications for the beam line optics.  
 
THPPD010 Design, Assembly and First Measurements of a Short Model for CLIC Final Focus Hybrid Quadrupole QD0 quadrupole, multipole, lattice, permanent-magnet 3515
 
  • M. Modena, O. Dunkel, J.G. Perez, C. Petrone, P.A. Thonet, D. Tommasini
    CERN, Geneva, Switzerland
  • E. Solodko, A.S. Vorozhtsov
    JINR, Dubna, Moscow Region, Russia
  
  In the framework of the Compact Linear Collider (CLIC) R&D, a tunable hybrid magnet design has been proposed for the final focus QD0 quadrupole. A short model of the magnet has been realized in order to validate the novel design and its expected performances. In order to achieve extremely high quadrupole gradients (>500 T/m), the magnet design combines: a core structure made in magnetic CoFe alloy “Permendur”, permanent magnet blocks, and air-cooled electromagnetic coils. Relevant aspects of this design are the wide tunability of the gradient range, the compactness and the absence of any vibrations. In this paper a reminder of the magnet design concept is given; then, the procurement and assembly main aspects are presented, followed by the results of the magnetic measurements. Finally, some manufacturing considerations relative to a full size magnet procurement are discussed.  
 
THPPD036 High-Field Combined-Function Magnets for a 1.5×1.5 TeV Muon Collider Storage Ring dipole, quadrupole, collider, lattice 3587
 
  • V. Kashikhin, Y. Alexahin, N.V. Mokhov, A.V. Zlobin
    Fermilab, Batavia, USA
  
  Funding: Work supported by Fermi Research Alliance, LLC, under contract No. DE-AC02-07CH11359 with the U.S. Department of Energy
A new storage ring lattice based on combined function high-field magnets and conceptual designs of superconducting magnets with dipole and quadrupole coils for a muon collider with a c.o.m. energy of 3 TeV and an average luminosity of 4x1034 cm-2 s-1 are presented. Magnets are designed to provide the required focusing field gradient and bending field in the aperture with the appropriate operation margin. Magnets have large apertures to provide an adequate space for internal absorbers, vacuum insulation, beam pipe, and helium channel. Coil cross-sections were optimized to achieve the best possible field quality in the magnet aperture occupied with beams. Magnet parameters are reported and compared with the requirements. Energy deposition calculations with the MARS code have allowed to optimize parameters of inner absorbers and collimators in interconnect regions, thus reducing peak power density and dynamic loads to the tolerable levels. 		 
 
THPPD042 High Radiation Environment Nuclear Fragment Separator Dipole Magnet dipole, radiation, quadrupole, target 3605
 
  • S.A. Kahn
    Muons, Inc, Batavia, USA
  • R.C. Gupta
    BNL, Upton, Long Island, New York, USA
  
  Funding: Supported in part by STTR Grant 4746 · 11SC06273
Magnets in the fragment separator region of the Facility for Rare Isotope Beams (FRIB) would be subjected to extremely high radiation and heat loads. Critical elements of FRIB are the dipole magnets which select the desired isotopes. Since conventional NiTi and Nb3Sn superconductors must operate at ~4.5 K, the removal of the high heat load generated in these magnets with these superconductors would be difficult. The coils for these magnets must accommodate the large curvature from the 30° bend that the magnets subtend. High temperature superconductor (HTS) have been shown to be radiation resistant and can operate in the 20-50 K temperature range where heat removal is an order of magnitude more efficient than at 4.5 K. Furthermore these dipole magnets must be removable remotely for servicing because of the extremely high radiation environment. This paper will describe the magnetic and conceptual design of these magnets.