Author: Kirk, H.G.
Paper Title Page
MOP054 Racetrack Muon Ring Cooler Using Dipoles and Solenoids for a Muon Collider 202
 
  • X.P. Ding, D.B. Cline
    UCLA, Los Angeles, California, USA
  • J.S. Berg, H.G. Kirk
    BNL, Upton, Long Island, New York, USA
  • A.A. Garren
    Particle Beam Lasers, Inc., Northridge, California, USA
 
  Funding: DOE Grant No. DE-FG02-92ER40695
A racetrack muon ring cooler for a muon collider is considered. The achromatic cooler uses both dipoles and solenoids. We describe the ring lattice and show the results of beam dynamic simulation that demonstrates a large aperture for acceptance. We also examine the 6D cooling of the muon beam in the cooler and discuss the prospects for the future.
 
 
MOP055 Robust 6D Muon Cooling in Four-sided Ring Cooler using Solenoids and Dipoles for a Muon Collider 205
 
  • X.P. Ding, D.B. Cline
    UCLA, Los Angeles, California, USA
  • J.S. Berg, H.G. Kirk
    BNL, Upton, Long Island, New York, USA
  • A.A. Garren
    Particle Beam Lasers, Inc., Northridge, California, USA
 
  Funding: DOE Grant No. DE-FG02-92ER40695
We present a four-sided ring cooler that employs both dipoles and solenoids to provide robust 6D muon cooling of large emittance beams in order to design and build a muon collider. Our studies show strong 6D cooling adequate for components of a muon collider front end.
 
 
TUP177 Open Midplane Dipoles for a Muon Collider 1160
 
  • R.J. Weggel, J. Kolonko, R.M. Scanlan
    Particle Beam Lasers, Inc., Northridge, California, USA
  • M. Anerella, R.C. Gupta, H.G. Kirk, R. B. Palmer, J. Schmalzle
    BNL, Upton, Long Island, New York, USA
  • D.B. Cline, X.P. Ding
    UCLA, Los Angeles, California, USA
 
  Funding: This work is supported by the U.S. Department of Energy under Contract No. DE-AC02-98CH10886 and SBIR contract DOE Grant Numbers DE-FG02-07ER84855 and DE-FG02-08ER85037.
For a muon collider with copious decay particles in the plane of the storage ring, open-midplane dipoles (OMD) may be preferable to tungsten-shielded cosine-theta dipoles of large aperture. The OMD should have its midplane completely free of material, so as to dodge the radiation from decaying muons. Analysis funded by a Phase I SBIR suggests that a field of 10-20 T should be feasible, with homogeneity of 1x10-4 and energy deposition low enough for conduction cooling to 4.2 K helium. If funded, a Phase II SBIR would refine the analysis and build and test a proof-of-principle magnet.
 
 
TUP179 Energy Deposition within Superconducting Coils of a 4 MW Target Station 1166
 
  • X.P. Ding
    UCLA, Los Angeles, California, USA
  • J.J. Back
    University of Warwick, Coventry, United Kingdom
  • R.C. Fernow, H.G. Kirk, N. Souchlas
    BNL, Upton, Long Island, New York, USA
  • K.T. McDonald
    PU, Princeton, New Jersey, USA
  • R.J. Weggel
    Particle Beam Lasers, Inc., Northridge, California, USA
 
  Funding: Work Supported by the United States Department of Energy, Contract No. DE-AC02-98CH10886.
A study of energy deposition within superconducting coils of a 4 MW target station for a neutrino factory or muon collider is presented. Using the MARS code, we simulate the energy deposition within the environment surrounding the target. The radiation is produced by interactions of intense proton beams with a free liquid mercury jet. We study the influence of different shielding materials and shielding configurations on the energy deposition in the superconducting coils of the target/capture system. We also examine energy depositions for alternative configurations that allow more space for shielding, thus providing more protection for the superconducting coils.
 
 
TUP265 A Solenoid Capture System for a Muon Collider 1316
 
  • H.G. Kirk, R.C. Fernow, N. Souchlas
    BNL, Upton, Long Island, New York, USA
  • J.J. Back
    University of Warwick, Coventry, United Kingdom
  • C.J. Densham, P. Loveridge
    STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
  • X.P. Ding
    UCLA, Los Angeles, California, USA
  • V.B. Graves
    ORNL, Oak Ridge, Tennessee, USA
  • T. Guo, F. Ladeinde, V. Samulyak, Y. Zhan
    SUNY SB, Stony Brook, New York, USA
  • K.T. McDonald
    PU, Princeton, New Jersey, USA
  • R.J. Weggel
    Particle Beam Lasers, Inc., Northridge, California, USA
 
  Funding: This work was supported in part by the US DOE Contract No. DE-AC02-98CH10886.
The concept for a muon-production system for a muon collider or neutrino factory calls for an intense 4-MW-class proton beam impinging upon a free-flowing mercury jet immersed in a 20-T solenoid field. This system is challenging in many aspects, including magnetohydrodynamics of the mercury jet subject to disruption by the proton beam, strong intermagnetic forces, and the intense thermal loads and substantial radiation damage to the magnet coils due to secondary particles from the target. Studies of these issues are ongoing, with a sketch of their present status given here.
 
 
WEOCS3
HTS Magnets for Accelerator and Other Applications  
 
  • R.C. Gupta, M. Anerella, G. Ganetis, P.N. Joshi, H.G. Kirk, R. B. Palmer, S.R. Plate, W. Sampson, Y. Shiroyanagi, P. Wanderer
    BNL, Upton, Long Island, New York, USA
  • D.B. Cline
    UCLA, Los Angeles, California, USA
  • J. Kolonko, R.M. Scanlan, R.J. Weggel
    Particle Beam Lasers, Inc., Northridge, California, USA
 
  Funding: This work is supported by the U.S. Department of Energy under Contract No. DE-AC02-98CH10886.
High Temperature Superconductors (HTS) are now becoming a crucial part of future medium and high field magnet applications in several areas including accelerators, energy storage, medical and user facilities. A second generation HTS quadrupole is being constructed for the Facilities for Rare Isotope Beams (FRIB). The muon collider requires high field solenoids in the range of 40-50 T - an R&D that is partly supported by SBIRs and partly programs at various laboratories. Superconducting Magnetic Energy Storage (SMES) R&D, recently funded by ARPA-E, requires large aperture HTS solenoid in the range of 25-30 T. A user facility at National High Magnetic Field Laboratory (NHMFL) has been funded to develop a 32 T solenoid. All of these programs require HTS in a quantity never obtained before for magnet applications and would play a key role in developing HTS for magnet applications. High field magnets pose special challenges in terms of quench protection, large stored energy and large stresses, etc. This presentation will review various ongoing activities, and examine the future prospects of HTS magnets in a number of applications, with a particular emphasis on high field applications.
 
slides icon Slides WEOCS3 [2.761 MB]