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Modeling the high-field section of a muon helical cooling channel

Description: This paper describes the conceptual design and parameters of a short model of a high-field helical solenoid for muon beam cooling. Structural materials choices, fabrication techniques and first test results are discussed.
Date: May 1, 2010
Creator: Zlobin, A. V.; Barzi, E.; Kashikhin, V. S.; Lamm, M. J.; Lombardo, V.; Lopes, M. L. et al.
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Partner: UNT Libraries Government Documents Department
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Compact IR Quadrupoles for Linear Colliders Based on Rutherford-type Cable

Description: The upcoming and disrupted beams in the interaction region (IR) of a linear collider are focused by doublets consisting of two small-aperture superconducting quadrupoles. These magnets need an effective compact magnetic shielding to minimize magnetic coupling between the two channels and sufficient temperature margin to withstand radiation-induced heat depositions in the coil. This paper presents conceptual designs of IR quadrupoles for linear colliders based on NbTi and Nb{sub 3}Sn Rutherford-… more
Date: August 1, 2008
Creator: Lopes, M. L.; Kashikhin, V. S.; Kashikhin, V. V. & Zlobin, A. V.
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Partner: UNT Libraries Government Documents Department
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Radiation and thermal analysis of superconducting quadrupoles in the interaction region of linear collider

Description: CERN has encouraged the US-LARP collaboration to participate in Phase I of the LHC luminosity upgrade by analyzing the benefits gained by using Nb3Sn technology to replace the functionality of select NbTi magnets that CERN is committed to construct. Early studies have shown that the much higher gradients (shorter magnetic lengths) and temperature margins (quench stability) of Nb3Sn magnets compared to their NbTi counterparts is favorable--allowing the insertion of additional absorbers between Q… more
Date: June 1, 2008
Creator: Drozhdin, A. I.; Kashikhin, V. V.; Kashikhin, V. S.; Lopes, M. L.; Mokhov, N. V.; Zlobin, A. V. et al.
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Partner: UNT Libraries Government Documents Department
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Design Studies of Magnet Systems for Muon Helical Cooling Channels

Description: Helical cooling channels with superimposed solenoid and helical dipole and quadrupole coils, and a pressurized gas absorber in the aperture offer high efficiency of 6D muon beam cooling. In this paper, we continue design studies and comparison of two basic concepts of magnet system proposed for a helical cooling channel focusing on the high field sections. The results of magnetic analysis and Lorentz force calculations as well as the superconductor choice are presented and discussed.
Date: June 25, 2008
Creator: Kashikhin, V.; Kashikhin, V. S.; Lamm, M. J.; Lopes, M. L.; Zlobin, A. V.; Alsharo'a, M. et al.
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Partner: UNT Libraries Government Documents Department
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Fabrication and test of short helical solenoid model based on YBCO tape

Description: 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 an… more
Date: March 1, 2011
Creator: Yu, M.; Lombardo, V.; Lopes, M. L.; Turrioni, D.; Zlobin, A. V.; Flanagan, G. et al.
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Partner: UNT Libraries Government Documents Department
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Radiation and Thermal Analysis of Superconducting Quadrupoles in the Interaction Region of Linear Collider

Description: Radiation heat deposition in the superconducting magnets of the Interaction Region (IR) of a linear collider can be a serious issue that limits the magnet operating margins and shortens the material lifetime. Radiation and thermal analyses of the IR quadrupoles in the incoming and extraction beam lines of the ILC are performed in order to determine the magnet limits. This paper presents an analysis of the radial, azimuthal and longitudinal distributions of heat deposition in the incoming and di… more
Date: October 14, 2011
Creator: Drozhdin, A. I.; Kashikhin, V. V.; Kashikhin, V. S.; Lopes, M. L.; Mokhov, N. V.; Zlobin, A. V. et al.
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Partner: UNT Libraries Government Documents Department
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Experimental studies of helical solenoid model based on YBCO tape-bridge joints

Description: Helical solenoids that provide solenoid, helical dipole and helical gradient field components are designed for a helical cooling channel (HCC) proposed for cooling of muon beams in a muon collider. The high temperature superconductor (HTS), 12 mm wide and 0.1 mm thick YBCO tape, is used as the conductor for the highest-field section of HCC due to certain advantages, such as its electrical and mechanical properties. To study and address the design, and technological and performance issues relate… more
Date: June 1, 2011
Creator: Yu, M.; Lombardo, V.; Turrioni, D.; Zlobin, A. V.; /Fermilab; Flangan, G. et al.
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Partner: UNT Libraries Government Documents Department
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Studies of high-field sections of a muon helical cooling channel with coil separation

Description: 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 … more
Date: March 1, 2011
Creator: Lopes, M. L.; Kashikhin, V. S.; Yonehara, K.; Yu, M. & Zlobin, A. V.
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Partner: UNT Libraries Government Documents Department
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Mechanical analysis and test results of 4-coil superconducting helical solenoid model

Description: Novel configurations of helical superconducting magnets for muon beam 6D phase space cooling channels and demonstration experiments are being designed at Fermilab. Operating as needed for the beam cooling in a cryogenic environment, the helical solenoid generates longitudinal and transverse magnetic fields; meanwhile, large Lorentz forces are produced, so rigid coil support structures need to be designed. A short model of a helical solenoid (HS), consisting of four coils and supporting structur… more
Date: January 1, 2010
Creator: Yu, M.; Andreev, N.; Chlachidze, G.; Johnson, R. P.; Kashikhin, V. S.; Kashikhin, V. V. et al.
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Partner: UNT Libraries Government Documents Department
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Design Studies of a Dipole with Elliptical Aperture for the Muon Collider Storage Ring

Description: In this paper we describe the main design issues of dipoles with an elliptical aperture taking into consideration the field and field quality. The discussion is extended presenting a combined function magnet design. The temperature margin and the forces in the coils are present as well.
Date: May 1, 2012
Creator: Palmer, R. B.; Lopes, M. L.; Kashikhin, V. V.; Tompkins, J. C. & Zlobin, A. V.
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Partner: UNT Libraries Government Documents Department
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Helical Muon Beam Cooling Channel Engineering Design

Description: The Helical Cooling Channel (HCC), a novel technique for six-dimensional (6D) ionization cooling of muon beams, has shown considerable promise based on analytic and simulation studies. However, the implementation of this revolutionary method of muon cooling requires new techniques for the integration of hydrogen-pressurized, high-power RF cavities into the low-temperature superconducting magnets of the HCC. We present the progress toward a conceptual design for the integration of 805 MHz RF cav… more
Date: May 1, 2012
Creator: Kashikhin, V. S.; Lopes, M. L.; Romanov, G. V.; Tartaglia, M. A.; Yonehara, K.; Yu, M. et al.
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Partner: UNT Libraries Government Documents Department
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