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Design of a High Gradient Quadrupole for the LHC Interaction Regions

Description: A collaboration of Fermilab, Lawrence Berkeley National Laboratory and Brookhaven National Laboratory is currently engaged in the design of a high gradient quadrupole suitable for use in the LHC interaction regions. The cold iron design incorporates a two-shell, cos2{theta} coil geometry with a 70 mm aperture. This paper summarizes the progress on a magnetic and mechanical design that meets the requirements of maximum gradient {>=}250 T/m, operation at 1.8K, high field quality and provision for… more
Date: March 1, 1997
Creator: Bossert, R.; Gourlay, S.A.; Heger, T.; Huang, Y.; Kerby, J.; Lamm, M. J. et al.
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Partner: UNT Libraries Government Documents Department
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MAGNETIC DESIGN OF A HIGH GRADIENT QUADRUPOLE FOR THE LHC LOW B INSERTIONS.

Description: Fermilab, Lawrence Berkeley National Laboratory and Brookhaven National Laboratory have formed a consortium to provide components for the Large Hadron Collider (LHC) to be built at CERN. The U.S. contribution includes half of the high gradient quadrupoles (HGQ) for the inner focusing triplets. In this paper a description of the HGQ magnetic design is given, including short sample limit for field gradient, sources and expected values of systematic and random field errors, and possible strategies… more
Date: May 12, 1997
Creator: Sabbi, G.; Gourlay, S. A.; Kerby, J.; Lamm, M. J.; Limon, P. J.; Nobrega, F. et al.
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Partner: UNT Libraries Government Documents Department
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Development and Test of a Single-Aperture 11 T Nb3Sn Demonstrator Dipole for LHC Upgrades.

Description: The upgrade of the LHC collimation system expects installation of additional collimators in the dispersion suppressor areas around the LHC ring. The longitudinal space for the collimators could be provided by replacing some 8.33 T Nb-Ti LHC main dipoles with shorter 11 T Nb/sub 3/Sn dipoles compatible with the LHC lattice and main systems. To demonstrate this possibility FNAL and CERN have started a joint program with the goal of building a 5.5 m long twin-aperture dipole prototype suitable for… more
Date: October 1, 2012
Creator: Zlobin, A.V. & al., et
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Partner: UNT Libraries Government Documents Department
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Mechanical Performance of the LARP Nb{sub 3}Sn Quadrupole Magnet LQS01

Description: As part of the effort towards the development of Nb{sub 3}Sn magnets for future LHC luminosity upgrades, the LHC Accelerator Research Program (LARP) has fabricated and tested the quadrupole magnet LQS01. The magnet implements 3.4 m long Nb{sub 3}Sn coils contained in a support structure characterized by an external aluminum shell segmented in four sections. The room temperature pre-load of the structure is obtained by shimming load keys through bladders, pressurized during the loading operation… more
Date: August 1, 2010
Creator: Ferracin, P.; Ambrosio, G.; Anerella, M.; Bingham, B.; Bossert, R.; Caspi, S. et al.
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Partner: UNT Libraries Government Documents Department
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Field Quality of the First LARP Nb{sub 3}Sn 3.7 m-Long Quadrupole Model of LQ Series

Description: The US-LHC accelerator research program (LARP) built and tested the first 3.7-m long Nb{sub 3}Sn quadrupole model of LQ series with a 90 mm bore diameter and a target field gradient of 200 T/m. The LQ series, developed in collaboration among FNAL, LBNL and BNL, is a scale up of the previously tested 1-m long technology quadrupoles of TQ series based on similar coils and two different mechanical structures (shell-based TQS and collar-based TQC), with a primary goal of demonstrating the Nb{sub 3}… more
Date: August 1, 2010
Creator: Velev, G.V.; Ambrosio, G.; Andreev, N.; Anerella, M.; Bossert, R.; Caspi, S. et al.
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Partner: UNT Libraries Government Documents Department
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Test Results of the first 3.7 m Long Nb3Sn Quadrupole by LARP and Future Plans

Description: In December 2009 during its first cold test, LQS01, the first long Nb{sub 3}Sn Quadrupole made by LARP (LHC Accelerator Research Program, a collaboration of BNL, FNAL, LBNL and SLAC), reached its target field gradient of 200 T/m. This target was set in 2005 by the US Department fo Energy, CERN and LARP, as a significant milestone toward the development of Nb{sub 3}Sn quadrupoles for possible use in LHC luminosity upgrades. LQS01 is a 90 mm aperture, 3.7 m long quadrupole using Nb{sub 3}Sn coils… more
Date: August 1, 2010
Creator: Ambrosio, G.; Andreev, N.; Anerella, M.; Barzi, E.; Bingham, B.; Bocian, D. 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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Test Results of 15 T Nb{sub 3}Sn Quadrupole Magnet HQ01 with a 120 mm Bore for the LHC Luminosity Upgrade

Description: In support of the luminosity upgrade of the Large Hadron Collider (LHC), the US LHC Accelerator Research Program (LARP) has been developing a 1-meter long, 120 mm bore Nb3 Sn IR quadrupole magnet (HQ). With a short sample gradient of 219 T/m at 1.9 K and a conductor peak field of 15 T, the magnet will operate under higher forces and stored-energy levels than that of any previous LARP magnet models. In addition, HQ has been designed to incorporate accelerator quality features such as precise coi… more
Date: August 1, 2010
Creator: Caspi, S.; Ambrosio, G.; Anerella, M.; Barzi, E.; Bingham, B.; Bossert, R. et al.
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Partner: UNT Libraries Government Documents Department
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Summary of HQ01e magnetic measurements

Description: The magnetic measurements of HQ01e, a 1 m long LHC Accelerator Research Program (LARP) high-gradient quadrupole model, were performed at 4.4 K and above 40 K at the magnet test facility of LBNL in July 2011. The 120 mm aperture cos2θ Nb{sub 3}Sn magnet was designed with accelerator magnet features including alignment and field quality. Conductor-limited gradient was 195 T/m at 4.4 K. During the measurement, a ramp rate of 10 A/s was used and measurements at the nominal current of 14.2 kA (82% o… more
Date: November 28, 2011
Creator: Wang, X.; Caspi, S.; Cheng, D. W.; Dietderich, D. R.; Felice, H.; Ferracin, P. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Insert Coil Test for HEP High Field Magnets Using YBCO Coated Conductor Tapes

Description: The final beam cooling stages of a Muon Collider may require DC solenoid magnets with magnetic fields of 30-50 T. In this paper we present progress in insert coil development using commercially available YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} Coated Conductor. Technological aspects covered in the development, including coil geometry, insulation, manufacturing process and testing are summarized and discussed. Test results of double pancake coils operated in liquid nitrogen and liquid helium are pre… more
Date: June 15, 2011
Creator: Lombardo, V.; Barzi, E.; Turrioni, D. & Zlobin, A. V.
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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 effects in a muon collider ring and dipole magnet protection

Description: The requirements and operating conditions for a Muon Collider Storage Ring (MCSR) pose significant challenges to superconducting magnets. The dipole magnets should provide a high magnetic field to reduce the ring circumference and thus maximize the number of muon collisions during their lifetime. One third of the beam energy is continuously deposited along the lattice by the decay electrons at the rate of 0.5 kW/m for a 1.5-TeV c.o.m. and a luminosity of 10{sup 34} cm{sup -2}s{sup -1}. Unlike d… more
Date: March 1, 2011
Creator: Mokhov, N. V.; Kashikhin, V. V.; Novitski, I. & 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: 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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Development and Fabrication of Nb3Sn Rutherford Cable for the 11 T DS Dipole Demonstration Model

Description: Fermilab and CERN started the development of 11 T 11-m long Nb{sub 3}Sn dipoles to replace few regular LHC NbTi dipoles and free space for cold collimators in LHC DS areas. An important step in the design of these magnets is the development of the high aspect ratio Nb{sub 3}Sn cable to achieve the nominal field of 11 T at the nominal LHC operating current of 11.85 kA with 20% margin. The keystoned cables 14.7 mm wide with and without a stainless steel core were made out of hard Cu wires and Nb{… more
Date: November 30, 2011
Creator: Barzi, E.; Lombardo, V.; Nobrega, F.; Turrioni, D.; Yamada, R.; 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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ASSEMBLY AND TEST OF A 120 MM BORE 15 T NB3SN QUADRUPOLE FOR THE LHC UPGRADE

Description: In support of the Large Hadron Collider (LHC) luminosity upgrade, the US LHC Accelerator Research Program (LARP) has been developing a 1-meter long, 120 mm bore Nb{sub 3}Sn IR quadrupole magnet (HQ). With a design short sample gradient of 219 T/m at 1.9 K and a peak field approaching 15 T, one of the main challenges of this magnet is to provide appropriate mechanical support to the coils. Compared to the previous LARP Technology Quadrupole and Long Quadrupole magnets, the purpose of HQ is also … more
Date: May 23, 2010
Creator: Felice, H.; Caspi, S.; Cheng, D.; Dietderich, D.; Ferracin, P.; Hafalia, R. 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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