Search Results

Advanced search parameters have been applied.
open access

Fermilab's SC Accelerator Magnet Program for Future U.S. HEP Facilities

Description: The invention of SC accelerator magnets in the 1970s opened wide the possibilities for advancing the energy frontier of particle accelerators, while limiting the machine circumference and reducing their energy consumption. The successful development of SC accelerator magnets based on NbTi superconductor have made possible a proton-antiproton collider (Tevatron) at Fermilab, an electron-proton collider (HERA) at DESY, a relativistic heavy ion collider (RHIC) at BNL and recently a proton-proton c… more
Date: January 1, 2010
Creator: Lamm, Michael & Zlobin, Alexander
Partner: UNT Libraries Government Documents Department
open access

Thermal analysis of SC quadrupoles in accelerator interaction regions

Description: This paper presents results of a thermal analysis and operation margin calculation performed for NbTi and Nb{sub 3}Sn low-beta quadrupoles in collider interaction regions. Results of the thermal analysis for NbTi quadrupoles are compared with the relevant experimental data. An approach to quench limit measurements for Nb{sub 3}Sn quadrupoles is discussed.
Date: September 1, 2006
Creator: Novitski, Igor & Zlobin, Alexander V.
Partner: UNT Libraries Government Documents Department
open access

Design study of 2-in-1 large aperture ir dipole (D2) for the LHC luminosity upgrade

Description: This paper analyses possible D2 magnet designs for the 'dipole-first' option of the LHC luminosity upgrade based on Nb3Sn superconductor and compares them in terms of the maximum field, field quality, and Lorentz forces in the coils.
Date: June 1, 2007
Creator: Kashikhin, Vadim V. & Zlobin, Alexander V.
Partner: UNT Libraries Government Documents Department
open access

Magnetic instabilities in Nb3Sn strands and cables

Description: This paper describes a model for calculation of magnetic instabilities in superconducting wires with transport current and reports results of instability simulations in Nb{sub 3}Sn strands from different manufactures. The effect of magnetic instabilities on the strand and cable performance is presented and a criterion for the maximum effective sub-element size of strands for high field magnets is formulated.
Date: November 1, 2004
Creator: Kashikhim, Vadim V. & Zlobin, Alexander V.
Partner: UNT Libraries Government Documents Department
open access

Magnetic designs and field quality of Nb{sub 3}Sn accelerator magnets

Description: This paper presents a new approach to accelerator magnet design, based on simple and robust single-layer coils with minimum number of turns arranged horizontally or vertically in a common iron yoke. Cos-theta and block type coil geometries as well as cold and warm iron yoke designs were studied. Coils and yokes were optimized for the maximum field, minimum field harmonics, and minimum sizes.
Date: January 14, 2002
Creator: Kashikhin, Vadim V. & Zlobin, Alexander V.
Partner: UNT Libraries Government Documents Department
open access

Aperture limitations for 2nd generation Nb3Sn LHC IR quadrupoles

Description: One of the straightforward ways towards the higher luminosity in the LHC is a replacement of the present 70-mm NbTi quadrupoles with Nb{sub 3}Sn quadrupoles which would provide the same field gradient but in a larger aperture. Conceptual designs of such quadrupoles with 90 mm aperture have been developed and studied. This paper discusses the possibilities and limitations of increasing the aperture of Nb{sub 3}Sn low-beta quadrupoles for a LHC luminosity upgrade up to 110 mm.
Date: June 2, 2003
Creator: Zlobin, Alexander V.; Kashikhin, Vadim V. & Strait, James B.
Partner: UNT Libraries Government Documents Department
open access

Study of high field superconducting solenoids for muon beam cooling

Description: The final beam cooling stages of a possible Muon Collider may require DC solenoid magnets with magnetic fields of 40-50 T in an aperture of 40-50 mm. In this paper we study possible solutions towards creating DC fields of that order using available superconductors. Several magnetic and mechanical designs, optimized for the maximum performance are presented and compared in terms of cost and size.
Date: August 1, 2007
Creator: Kashikhin, V. V.; Barzi, E.; Kashikhin, V. S.; Lamm, Michael J.; Sadovskiy, Y. & Zlobin, Alexander V
Partner: UNT Libraries Government Documents Department
open access

Magnetic and Mechanical Analysis of the HQ Model Quadrupole Designs for LARP

Description: Insertion quadrupoles with large bore and high gradient are required to upgrade the luminosity of the Large Hadron Collider (LHC). The US LHC Accelerator Research Program is developing Nb{sub 3}Sn technology for the upgrade. This effort includes a series of 1 m long Technology Quadrupoles (TQ), to demonstrate the reproducibility at moderate field, and High-gradient Quadrupoles (HQ) to explore the magnet performance limits in terms of peak fields, forces and stresses. The HQ models are expected … more
Date: June 1, 2008
Creator: Felice, Helene; Caspi, Shlomo; Ferracin, Paolo; Kashikhin, Vadim; Novitski, Igor; Sabbi, GianLuca et al.
Partner: UNT Libraries Government Documents Department
open access

Superconducting helical solenoid systems for muon cooling experiment at Fermilab

Description: Novel configurations of superconducting magnet system for Muon Beam Cooling Experiment is under design at Fermilab. The magnet system has to generate longitudinal and transverse dipole and quadrupole helical magnetic fields providing a muon beam motion along helical orbit. It was found that such complicated field configuration can be formed by a set of circular coils shifted in transverse directions in such a way that their centers lay on the center of the helical beam orbit. Closed beam orbit … more
Date: August 1, 2007
Creator: Kashikhin, Vladimir S.; Andreev, Nikolai; Johnson, Rolland P.; Kashikhin, Vadim V.; Lamm, Michael J.; Romanov, Gennady et al.
Partner: UNT Libraries Government Documents Department
open access

Round and Extracted Nb3Sn Strand Tests for LARP Magnet R&D

Description: The first step in the magnet R&D of the U.S. LHC Accelerator Research Program (LARP) is fabrication of technology quadrupoles TQS01 and TQC01. These are two-layer magnets which use cables of same geometry made of 0.7 mm MJR Nb{sub 3}Sn. Through strand billet qualification and tests of strands extracted from the cables, predictions of magnet performance are made. Measurements included the critical current, I{sub c}, using the voltage-current (VI) method at constant field, the stability curre… more
Date: June 1, 2006
Creator: Barzi, Emanuela; Bossert, Rodger; Caspi, Shlomo; Dietderich, Dan; Ferracin, Paolo; Ghosh, Arup et al.
Partner: UNT Libraries Government Documents Department
open access

Design Studies of Nb3Sn High-Gradient Quadrupole Models for LARP

Description: Insertion quadrupoles with large aperture and high gradient are required to achieve the luminosity upgrade goal of 10{sup 35} cm{sup -2} s{sup -1} at the Large Hadron Collider (LHC). In 2004, the US Department of Energy established the LHC Accelerator Research Program (LARP) to develop a technology base for the upgrade. Nb{sub 3}Sn conductor is required in order to operate at high field and with sufficient temperature margin. We report here on the conceptual design studies of a series of 1 m lo… more
Date: June 1, 2007
Creator: Sabbi, GianLuca; Andreev, Nikolai; Caspi, Shlomo; Dietderich, Daniel; Ferracin, Paolo; Ghosh, Arup et al.
Partner: UNT Libraries Government Documents Department
open access

Design Studies of Nb3Sn High-Gradient Quadrupole Models for LARP

Description: Insertion quadrupoles with large aperture and high gradient are required to achieve the luminosity upgrade goal of 10{sup 35} cm{sup -2} s{sup -1} at the Large Hadron Collider (LHC). In 2004, the US Department of Energy established the LHC Accelerator Research Program (LARP) to develop a technology base for the upgrade. Nb{sub 3}Sn conductor is required in order to operate at high field and with sufficient temperature margin. We report here on the conceptual design studies of a series of 1 m lo… more
Date: June 1, 2007
Creator: Andreev, Nikolai; Caspi, Shlomo; Dietderich, Daniel; Ferracin, Paolo; Ghosh, Arup; Kashikhin, Vadim et al.
Partner: UNT Libraries Government Documents Department
open access

Design of a High Field Nb3Al Common Coil Magnet

Description: A high field Nb{sub 3}Al common coil magnet is under development as an R&D of 'Advanced Superconducting Magnets for the LHC Luminosity Upgrade', in the framework of the CERN-KEK cooperation program. The goal of this research is to demonstrate the feasibility of high field magnet wound with Nb{sub 3}Al cable. The common coil approach and the shell-based structure were adopted in the design of this magnet. Besides three Nb{sub 3}Al coils, two Nb{sub 3}Sn coils were included to increase the pe… more
Date: October 19, 2009
Creator: Xu, Qingjin; Sasaki, Kenichi; Nakamoto, Tatsushi; Terashima, Akio; Tsuchiya, Kiyosumi; Yamamoto, Akira et al.
Partner: UNT Libraries Government Documents Department
open access

Fabrication and Test of LARP Technological Quadrupole Models of TQC Series

Description: In support of the development of a large-aperture Nb3Sn superconducting quadrupole for the Large Hadron Collider (LHC) luminosity upgrade, several two-layer technological quadrupole models of TQC series with 90 mm aperture and collar-based mechanical structure have been developed at Fermilab in collaboration with LBNL. This paper summarizes the results of fabrication and test of TQC02a, the second TQC model based on RRP Nb3Sn strand, and TQC02b, built with both MJR and RRP strand. The test resu… more
Date: August 17, 2008
Creator: Bossert, Rodger C.; Ambrosio, Giorgio; Andreev, Nilolai; Barzi, Emanuela; Chlachidze, Guram; Feher, Sandor et al.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen