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Dietderich, D.R.

Paper Title Page
MO6PFP066 Design and Construction of a 15 T, 120 mm Bore IR Quadrupole Magnet for LARP 280
 
  • S. Caspi, D.W. Cheng, D.R. Dietderich, H. Felice, P. Ferracin, R.R. Hafalia, R. Hannaford, G.L. Sabbi
    LBNL, Berkeley, California
  • G. Ambrosio, R. Bossert, V. Kashikhin, D. Pasholk, A.V. Zlobin
    Fermilab, Batavia
  • M. Anerella, A.K. Ghosh, J. Schmalzle, P. Wanderer
    BNL, Upton, Long Island, New York
  
 

Funding: This work was supported in part by the Director, Office of Science, High Energy Physics, U.S. Department of Energy under contract No. DE-AC02-05CH11231


Pushing accelerator magnets beyond 10 T holds a promise of future upgrades to machines like the Large Hadron Collider (LHC) at CERN. Nb3Sn conductor is at the present time the only practical superconductor capable of generating fields beyond 10 T. In support of the LHC Phase-II upgrade, the US LHC Accelerator Research Program (LARP) is developing a large bore (120mm) IR quadrupole (HQ) capable of reaching 15 T at its conductor peak field. The 1 m long two-layer coil, based on the design of the LARP TQ quadrupole series that achieved 230 T/m in a 90 mm bore, will demonstrate additional features such as alignment and accelerator field quality while exploring the magnet performance limits in terms of gradient, forces and stresses. In this paper we summarize the design and report on the magnet construction progress.

  
WE5RFP075 High Performance Short-Period Undulators Using High Temperature Superconductor Tapes 2438
 
  • S. Prestemon, D.R. Dietderich, A. Madur, S. Marks, D. Schlueter
    LBNL, Berkeley, California
  
 

Funding: This work was supported by the Director, Office of Science, U.S. Department of Energy, under contract No. DE-AC02-05CH11231.


Superconducting undulators are currently under development at a number of light sources to serve as the next generation of insertion devices, with higher fields providing enhanced spectral range for users. Most of these devices are designed with wire-based technologies appropriate for periods greater than ~10mm. New undulator concepts yielding very short-period, high-field devices with periods of a few millimeters and a K~1 have the potential to significantly reduce the cost and enhance the performance of FEL's. Here we describe a design using high temperature superconductor tapes that are commercially available, and that promise a cost-effective fabrication process using micromachining or lithography. Detailed magnetic and spectral performance analysis will be provided.