Author: Yu, M.
Paper Title Page
TUP152 Dipole Corrector Magnets for the LBNE Beam Line 1115
 
  • M. Yu, D.J. Harding, G. Velev
    Fermilab, Batavia, USA
 
  The conceptual design of a new dipole corrector magnet has been thoroughly studied. The planned Long-Baseline Neutrino Experiment (LBNE) beam line will require correctors capable of greater range and linearity than existing correctors, so a new design is proposed based on the horizontal trim dipole correctors built for the Main Injector synchrotron at Fermilab. The gap, pole shape, length, and number of conductor turns remain the same. To allow operation over a wider range of excitations without overheating, the conductor size is increased, and to maintain better linearity, the back leg thickness is increased. The magnetic simulation was done using ANSYS to optimize the shape and the size of the yoke. The thermal performance was also modeled and analyzed.  
 
TUP153 Fabrication and Test of Short Helical Solenoid Model Based on YBCO Tape 1118
 
  • M. Yu, V. Lombardo, M.L. Lopes, D. Turrioni, A.V. Zlobin
    Fermilab, Batavia, USA
  • G. Flanagan, R.P. Johnson
    Muons, Inc, Batavia, USA
 
  Funding: Supported in part by USDOE STTR Grant DE-FG02-07ER84825 and by Fermi Research Alliance, LLC, under contract No. DE-AC02-07CH11359 with the U.S. Department of Energy.
A helical cooling channel (HCC) is a new technique proposed for six-dimensional (6D) cooling of muon beams. To achieve the optimal cooling rate, the high field section of HCC need to be developed, which suggests using High Temperature Superconductors (HTS). This paper updates the parameters of a YBCO based helical solenoid (HS) model, describes the fabrication of HS segments (double-pancake units) and the assembly of six-coil short HS model with two dummy cavity insertions. Three HS segments and the six-coil short model were tested. The results are presented and discussed.
 
 
TUP172 Studies of High-field Sections of a Muon Helical Cooling Channel with Coil Separation 1148
 
  • M.L. Lopes, V.S. Kashikhin, K. Yonehara, M. Yu, 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.
The Helical Cooling Channel (HCC) was proposed for 6D cooling of muon beams required for muon collider and some other applications. HCC uses a continuous absorber inside superconducting magnets which produce solenoidal field superimposed with transverse helical dipole and helical gradient fields. HCC is usually divided into several sections each with progressively stronger fields, smaller aperture and shorter helix period to achieve the optimal muon cooling rate. This paper presents the design issues of the high field section of HCC with coil separation. The effect of coil spacing on the longitudinal and transverse field components is presented and its impact on the muon cooling is evaluated and discussed. The paper also describes methods for field corrections and their practical limits.