• G. Velev, J. DiMarco, C.C. Drennan, D.J. Harding, V.S. Kashikhin, O. Kiemschies, S. Kotelnikov, J.R. Lackey, A.V. Makarov, A. Makulski, R. Nehring, D.F. Orris, W. Pellico, E. Prebys, P. Schlabach, D.G.C. Walbridge
  Fermilab, Batavia

Funding: Work supported by the U.S. Department of Energy

The fabrication of the multi-element corrector magnets for the Fermilab Booster synchrotron has just been completed. These water-cooled packages include six different corrector types - normal and skews oriented dipole, quadrupole and sextupole elements. They will provide full orbit control, tune and chromaticity of the beam over the whole range of Booster energies, from 0.4 GeV to 8 GeV. During production, a set of quality assurance measurements were performed, including special thermal tests. This paper summarizes the results from these measurements as well as discussing some specific steps of the magnet fabrication process.

• V.S. Kashikhin, E. Borissov, G.W. Foster, T.N. Khabiboulline, A. Makulski, Y.M. Pischalnikov
  Fermilab, Batavia

Funding: Department of Energy, U.S.A.

A novel prototype of SCRF cavity tuner is being designed and tested at Fermilab. This is a superconducting C-type iron dominated magnet having a 10 mm gap, axial symmetry, and a 1 Tesla field. Inside the gap is mounted a superconducting coil capable of moving ± 1 mm and producing a longitudinal force up to ± 1.5 kN. The static force applied to the RF cavity flanges provides a long- term cavity geometry tuning to a nominal frequency. The same coil powered by a fast AC current pulse delivers mechanical perturbation for fast cavity tuning. This fast mechanical perturbation could be used to compensate a dynamic RF cavity detuning caused by cavity Lorentz forces and microphonics. A special configuration of magnet system was designed and tested.

• M.J. Lamm, N. Andreev, V. Kashikhin, V.S. Kashikhin, A.V. Makarov, M.A. Tartaglia, K. Yonehara, M. Yu, A.V. Zlobin
  Fermilab, Batavia
• R.P. Johnson, S.A. Kahn
  Muons, Inc, Batavia

Funding: Supported in part by USDOE STTR Grant DE-FG02-06ER86282

Magnets for the proposed muon cooling demonstration experiment MANX (Muon collider And Neutrino factory eXperiment) have to generate longitudinal solenoid and transverse helical dipole and helical quadrupole fields. This paper discusses the 0.4 M diameter 4-coil Helical Solenoid (HS) model design, manufacturing, and testing that has been done to verify the design concept, fabrication technology, and the magnet system performance. The model quench performance in the FNAL Vertical Magnet Test Facility (VMTF) will be discussed.

• M.L. Lopes, V.S. Kashikhin, A.V. Zlobin
  Fermilab, Batavia
• R.P. Johnson, S.A. Kahn
  Muons, Inc, Batavia

Funding: Supported in part by USDOE STTR Grant DE-FG02-07ER84825

This paper presents the results of design studies of a high field section of a helical cooling channel proposed for the 6D muon beam cooling. The results include the magnet aperture limitations, the tunability of field components, the field correction, the superconductor choice and the magnet operation margin.

• K. Yonehara, V.S. Kashikhin, M.J. Lamm, M.L. Lopes, A.V. Zlobin
  Fermilab, Batavia
• R.P. Johnson, S.A. Kahn, M.L. Neubauer
  Muons, Inc, Batavia

Funding: Supported in part by USDOE STTR Grant DE-FG02-07ER84825 and by FRA under DOE Contract DE-AC02-07CH11359

The helical cooling channel is proposed to make a quick muon beam phase space cooling in a short channel length. The challenging part of the helical cooling channel magnet design is how to integrate the RF cavity into the compact helical cooling magnet. This report shows the possibility of the integration of the system.

• K. Yonehara, V.S. Kashikhin, M.J. Lamm, A.V. Zlobin
  Fermilab, Batavia
• R.J. Abrams, C.M. Ankenbrandt, M.A.C. Cummings, R.P. Johnson, S.A. Kahn
  Muons, Inc, Batavia
• J.A. Maloney
  Northern Illinois University, DeKalb, Illinois

Funding: Supported in part by USDOE STTR Grant DE-FG02-06ER86282 and by FRA under DOE Contract DE-AC02-07CH11359

MANX is a six-dimensional muon ionization cooling demonstration experiment based on the concept of a helical cooling channel in which a beam of muons loses energy in a continuous helium or hydrogen absorber while passing through a special superconducting magnet called a helical solenoid. The goals of the experiment include tests of the theory of the helical cooling channel and the helical solenoid implementation of it, verification of the simulation programs, and a demonstration of effective six-dimensional cooling of a muon beam. We report the status of the experiment and in particular, the proposal to have MANX follow MICE at the Rutherford-Appleton Laboratory (RAL) as an extension of the MICE experimental program. We describe the economies of such an approach which allow the MICE beam line and much of the MICE apparatus and expertise to be reused.