V.S. Kashikhin
Fermilab
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Featured researches published by V.S. Kashikhin.
ieee particle accelerator conference | 2007
V.S. Kashikhin; M.J. Lamm; Gennady Romanov; K. Yonehara; A.V. Zlobin; R.P. Johnson; S. Kahn; Thomas J. Roberts
MANX is a 6-dimensional muon ionization-cooling experiment that has been proposed to Fermilab to demonstrate the use of a Helical Cooling Channel (HCC) for future muon colliders and neutrino factories. The HCC for MANX has solenoidal, helical dipole, and helical quadrupole magnetic components which diminish as the beam loses energy as it slow down in a liquid helium absorber inside the magnets. Additional magnets that provide emittance matching between the HCC and upstream and downstream spectrometers are also described as are the results of G4Beamline simulations of the beam cooling behavior of the complete magnet and absorber system.
ieee particle accelerator conference | 2007
S. Kahn; M. Alsharo'a; R.P. Johnson; V.S. Kashikhin; K. Yonehara; A.V. Zlobin
A helical cooling channel (HCC) consisting of a pressurized gas absorber imbedded in a magnetic channel that provides superimposed solenoidal, helical dipole, and helical quadrupole fields has shown considerable promise in providing six-dimensional cooling of muon beams. The analysis of this muon cooling technique with both analytic and simulation studies has shown significant reduction of muon phase space emittance. A particular channel that has been simulated is divided into four segments each with progressively smaller apertures and stronger fields to reduce the equilibrium emittance so that more cooling can occur. The fields in the helical channel are sufficiently large that the conductor for segments 1 and 2 can be Nb3Sn and the conductor for segments 3 and 4 may need to be high temperature superconductor. This paper will describe the magnetic specifications for the channel and two conceptual designs on how to implement the magnetic channel.
Proceedings of the 2005 Particle Accelerator Conference | 2005
V.S. Kashikhin; J.A. Carson; D.J. Harding; J.R. Lackey; A. Makarov; W. Pellico; E.J. Prebys
Since its initial operation over 30 years ago, most correction magnets in the Fermilab Booster Synchrotron have only been able to fully correct the orbit, tunes, coupling, and chromaticity at injection (400MeV). We have designed a new correction package, including horizontal and vertical dipoles, normal and skew quadrupoles, and normal and skew sextupoles, to provide control up to the extraction energy (8GeV). In addition to tracking the 15Hz cycle of the main, combined function magnets, the quadrupoles and sextupoles must swing through their full range in 1 ms during transition crossing. The magnet is made from 12 water-cooled racetrack coils and an iron core with 12 poles, dramatically reducing the effective magnet air gap and increasing the corrector efficiency. Magnetic field analyses of different combinations of multipoles are included.
ieee particle accelerator conference | 2007
E.J. Prebys; C.C. Drennan; D.J. Harding; V.S. Kashikhin; J.R. Lackey; A. Makarov; W.A. Pellico
We present an ambitious ongoing project to build and install a new corrector system in the Fermilab 8 GeV booster. The system consists of 48 corrector packages, each containing horizontal and vertical dipoles, normal and skew quadrupoles, and normal and skew sextupoles. Space limitations in the machine have motivated a unique design, which utilizes custom wound coils around a 12 pole laminated core. Each of the 288 discrete multipole elements in the system will have a dedicated power supply, the output current of which is controlled by an individual programmable ramp. This paper describes the physics considerations which drove the design, as well as issues in the control of the system.
ieee particle accelerator conference | 2007
D.J. Harding; J. DiMarco; C.C. Drennan; V.S. Kashikhin; S. Kotelnikov; J.R. Lackey; A. Makarov; A. Makulski; R. Nehring; D. Orris; E.J. Prebys; P. Schlabach; G.V. Velev; D.G. Walbridge
To better control the beam position, tune, and chromaticity in the Fermilab Booster synchrotron, a new package of six corrector elements has been designed, incorporating both normal and skew orientations of dipole, quadrupole, and sextupole magnets. The devices are under construction and installation at 48 locations is planned. The density of elements and the rapid slew rate have posed special challenges. The magnet construction is presented along with DC measurements of the magnetic field.
ieee particle accelerator conference | 2007
D.J. Harding; L. Bartelson; B.C. Brown; J.A. Carson; Weiren Chou; J. DiMarco; H.D. Glass; D. E. Johnson; V.S. Kashikhin; Ioanis Kourbanis; W.F. Robotham; M. Tartaglia
During the design of the Fermilab Main Injector synchrotron it was recognized that the aperture was limited at the beam transfer and extraction points by the combination of the Lambertson magnets and the reused Main Ring quadrupoles located between the Lambertsons. Increased intensity demands on the Main Injector from antiproton production for the collider program, slow spill to the meson fixed target program, and high intensity beam to the high energy neutrino program have led us to replace the aperture-limiting quadrupoles with newly built magnets that have the same physical length but a larger aperture. The magnets run on the main quadrupole bus, and must therefore have the same excitation profile as the magnets they replaced. We present here the design of the magnets, their magnetic performance, and the accelerator performance.
IEEE Transactions on Applied Superconductivity | 2008
A. Makarov; C.C. Drennan; J. DiMarco; D.J. Harding; V.S. Kashikhin; J.R. Lackey; E. L. Prebys; P. Schlabach; G. Velev; D.G. Walbridge
A new package of six corrector elements has been designed to better control the beam position, tune, and chromaticity in the Fermilab Booster synchrotron. It incorporates both normal and skew orientations of dipole, quadrupole, and sextupole magnets. These new corrector magnets will be installed in the Fermilab Booster ring in place of old style corrector elements. A severe space restriction and rapid slew rate have posed special challenges. The magnet design, construction, and performance are presented.
Journal Name: Conf.Proc.C0806233:wepd015,2008; Conference: EPAC'08, 11th European Particle Accelerator Conference, 23-27 June 2008, Genoa, Italy | 2008
V.S. Kashikhin; V. S. Kashikhin; M.J. Lamm; M. L. Lopes; A.V. Zlobin; M. Alsharo'a; R.P. Johnson; Stephen A. Kahn
Presented at | 2010
S. Kahn; Michael Neubauer; M. L. Lopes; M. Yu; R.P. Johnson; G. Flanagan; Alexander V. Zlobin; K. Yonehara; V.S. Kashikhin
Conf.Proc.C0806233:wepd013,2008 | 2008
V. S. Kashikhin; Stephen A. Kahn; A.V. Makarov; K. Yonehara; M.J. Lamm; A.V. Zlobin; V.S. Kashikhin; N. Andreev; A.N. Didenko; R.P. Johnson