Magnetic design of large-bore superconducting quadrupoles for the AHF

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The Advanced Hydrotest Facility (AHF), under study by LANL, utilizes large-bore superconducting quadrupole magnets to image protons for radiography of fast events. In this concept, 50-GeV proton bunches pass through a thick object and are imaged by a lens system that analyzes the scattered beam to determine object details. Twelve simultaneous views of the object are obtained using multiple beam lines. The lens system uses two types of quadrupoles: a large bore (48-cm beam aperture) for wide field of view imaging and a smaller bore (23 cm aperture) for higher resolution images. The gradients of the magnets are 10.14 T/m ... continued below

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625 Kilobytes pages

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al., Vladimir S Kashikhin et August 13, 2002.

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The Advanced Hydrotest Facility (AHF), under study by LANL, utilizes large-bore superconducting quadrupole magnets to image protons for radiography of fast events. In this concept, 50-GeV proton bunches pass through a thick object and are imaged by a lens system that analyzes the scattered beam to determine object details. Twelve simultaneous views of the object are obtained using multiple beam lines. The lens system uses two types of quadrupoles: a large bore (48-cm beam aperture) for wide field of view imaging and a smaller bore (23 cm aperture) for higher resolution images. The gradients of the magnets are 10.14 T/m and 18.58 T/m with magnetic lengths of 4.3 m and 3.0 m, respectively. The magnets are sufficiently novel to present a design challenge. Evaluation and comparisons were made for various types of magnet design: shell and racetrack coils, cold and warm iron, as well as an active superconducting screen. Nb{sub 3}Sn cable was also considered as an alternative to avoid quenching under high beam-scattering conditions. The superconducting shield concept eliminates the iron core and greatly lessens the cryogenic energy needed for cool down. Several options are discussed and comparisons are made.

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625 Kilobytes pages

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  • Applied Superconductivity Conference 2002, Houston, TX (US), 08/04/2002--08/09/2002

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  • Report No.: FERMILAB-Conf-02/172-T
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 798732
  • Archival Resource Key: ark:/67531/metadc743000

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  • August 13, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • April 1, 2016, 5:32 p.m.

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al., Vladimir S Kashikhin et. Magnetic design of large-bore superconducting quadrupoles for the AHF, article, August 13, 2002; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc743000/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.